ZETRON 4010 User manual

ZETRON
Model 4010 Radio Dispatch Console
Service Manual
Part No. 025-9228H
Copyright © 1992 - 2003 by Zetron, Inc.
All Rights Reserved

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WARRANTY
Zetron’s warranty is published in the current Zetron United States Price Book.
LIMITATION OF LIABILITY
Zetron makes no representation with respect to the contents of this document and/or the contents,
performance, and function of any accompanying software and specifically disclaims any warranties,
expressed or implied, as to merchantability, fitness for purpose sold, description, or quality.
Further, Zetron reserves the right to revise this document or the accompanying software and to make
changes in it from time to time without obligation to notify any person or organization of such
revisions or changes.
This document and any accompanying software are provided “as is.” Zetron shall not under any
circumstances be responsible for any indirect, special, incidental, or consequential damages or losses
to the buyer or any third party arising out of or connected with the buyer’s purchase and use of
Zetron’s products or services.
COPYRIGHT
This publication is protected by copyright by Zetron, Inc. and all rights are reserved worldwide. This
publication may not, in whole or in part, be copied, photocopied, reproduced, translated, or reduced
to any electronic medium or machine-readable form without prior written consent from Zetron, Inc.
The software in this product is protected by copyright by Zetron, Inc. and remains the property of
Zetron, Inc. Reproduction, duplication, or disclosure is not permitted without prior written consent of
Zetron, Inc.
TRADEMARKS
Zetron®is a registered trademark of Zetron, Inc. All other product names referenced in this document
are trademarks or registered trademarks of their respective owners.
FEDERAL COMMUNICATIONS COMMISSION (FCC) REGULATIONS
Part 68
1. This device complies with Part 68 of the FCC rules. The FCC registration number of this device
and the ringer equivalence number, if requested, must be reported to the telephone company. The
FCC registration number and the ringer equivalence number may be found on the label attached
to any of the Model 4010 phone patch cards installed in the unit.
2. The ringer equivalence number (REN) is used to determine the quantity of devices which may be
connected to the telephone line. Excessive RENs on the telephone line may result in the devices
not ringing in response to an incoming call. The sum of ringer equivalence numbers for all
devices connected to a single telephone line should not exceed five (5.0) for reliable operation.
To be certain of the number of devices that may be connected to a line, as determined by the total
RENs, contact the local telephone company.
3. If this device causes harm to the telephone network, the telephone company will notify you in
advance that temporary discontinuance of service may be required. If advance notice is not
practical, the telephone company will notify you as soon as possible. You will also be advised of
your right to file a complaint with the FCC if you believe it is necessary.
4. The telephone company may make changes in its facilities, equipment, operations or procedures
that could affect the operation of this equipment. If this happens, the telephone company will
provide advance notice in order for you to make necessary modifications to maintain
uninterrupted service.
5. This device must not be installed on coin-operated telephone lines or party lines.
6. Repair work on this device must be done by Zetron, Inc. or a Zetron authorized repair station. If
this device is causing harm to the telephone network the telephone company may request that you
disconnect the equipment until the problem is resolved.
Part 15
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case
the user will be required to correct the interference at his or her own expense.
Changes or modifications not expressly approved by the manager of Zetron’s compliance department
can void the FCC authorization to operate this equipment.
Repair work on this device must be done by Zetron, Inc. or a Zetron authorized repair station.

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Table of Contents
WARRANTY ..................................................................................................................................................................3
LIMITATION OF LIABILITY .......................................................................................................................................3
COPYRIGHT ..................................................................................................................................................................3
TRADEMARKS ..............................................................................................................................................................3
FEDERAL COMMUNICATIONS COMMISSION (FCC) REGULATIONS................................................................3
INTRODUCTION ..............................................................................................................................................................7
MODEL 4010 ..................................................................................................................................................................7
MODEL 4011 ..................................................................................................................................................................7
MODEL 4010R................................................................................................................................................................7
MODEL 4115B ...............................................................................................................................................................7
MANUALS......................................................................................................................................................................8
SPECIFICATIONS..........................................................................................................................................................8
THEORY OF OPERATION .............................................................................................................................................9
SYSTEM DESCRIPTION...............................................................................................................................................9
BLOCK DIAGRAM ........................................................................................................................................................9
CONTROL BOARD (702-9376).....................................................................................................................................9
DISPLAY BOARD (702-9378).....................................................................................................................................10
KEYBOARD (702-9379) ..............................................................................................................................................10
60-BUTTON PANEL (702-9432) .................................................................................................................................11
DUAL CHANNEL CARD (950-9715)..........................................................................................................................11
PHONE PATCH CARD (950-9719 OR 950-9720)........................................................................................................11
AUXILIARY I/O CARD (950-9721) ............................................................................................................................12
TONE REMOTE SYSTEM ADAPTER (950-0255) ....................................................................................................12
TONE REMOTE SYSTEM ADAPTER W/AUDIO DELAY (950-9922) ...................................................................12
DC REMOTE CHANNEL ADAPTER (950-9716) ......................................................................................................13
TONE REMOTE LOTL CHANNEL ADAPTER (950-9719) ......................................................................................13
INDIVIDUAL CHANNEL DTMF ANI DECODER (950-9722) .................................................................................13
INDIVIDUAL CHANNEL 5-TONE ANI DECODER (950-9707, 950-9708) .............................................................14
INDIVIDUAL CHANNEL FSK ANI DECODER (950-9709) .....................................................................................14
INDIVIDUAL CHANNEL GE-STAR ANI DECODER (950-9625)............................................................................14
SYSTEM REPAIR............................................................................................................................................................15
DIAGNOSTIC MESSAGES .........................................................................................................................................15
CARD REMOVAL AND INSTALLATION.................................................................................................................15
MODEL 4010 PROGRAMMING CABLE WIRING DIAGRAM ................................................................................................15
SERVICE DIAGRAMS.................................................................................................................................................15
MODEL 4010 COMMUNICATIONS CONSOLE ASSEMBLY (024-0171A) ...........................................................16
MODEL 4010R RACKMOUNT CONSOLE ASSEMBLY (024-0176A) ....................................................................19
MODEL 4010 BOARDS ...............................................................................................................................................20
DUAL CHANNEL OPTION 950-9715.........................................................................................................................40
DC REMOTE OPTION (950-9716)..............................................................................................................................47
TONE REMOTE SYSTEM ADAPTER OPTION (950-9717).....................................................................................50
TONE REMOTE SYSTEM ADAPTER OPTION (950-0255).....................................................................................53
TONE REMOTE WITH AUDIO DELAY OPTION (950-9922) .................................................................................58
TONE REMOTE LOTL OPTION (950-9718)..............................................................................................................63
SINGLE PHONE PATCH OPTION (950-9719) ..........................................................................................................66
DUAL PHONE PATCH OPTION (950-9720) .............................................................................................................72
AUXILIARY I/O OPTION (950-9721) ........................................................................................................................78
TONE LOTL/DTMF DECODE DAUGHTER BOARD OPTION (950-9722) ........................................................... 81
CHANNEL 5-TONE ANI DECODER OPTION (950-9707, 950-9708) ..................................................................... 84
CHANNEL ANI FSK DECODER OPTION (950-9709) ............................................................................................. 87
MODEL 4010R BOARDS............................................................................................................................................ 89
MODEL 4011 BOARDS ............................................................................................................................................ 106
MODEL 4115B BOARDS.......................................................................................................................................... 116

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INTRODUCTION
MODEL 4010
The Model 4010 Radio Dispatch Console is a self-contained, multi-channel, desktop console. It is a
single position console that interfaces directly to the radio transceivers and telephone lines. It is suit-
able for use in public safety applications, such as police and fire communications, as well as public
service applications, such as utility and industrial communications. The Model 4010 may be tailored
to fit the size of the system, from 2 to 12 channels, by adding dual channel cards as required. The
channels can be configured to support a mix of control types: DC remote, tone remote, local control,
and E&M control.
MODEL 4011
The Model 4011 Console Expander attaches to the top of desktop console and adds 30 program-
mable keys to the station.
MODEL 4010R
The Model 4010R Radio Dispatch Console has the same functions and capabilities as the Model
4010.
In this manual both the Model 4010 and 4010R are referred to as the Model 4010 unless specifically
stated otherwise.
MODEL 4115B
The Model 4115B Console Expander is a rackmount 60-button panel used to expand the number of
programmable keys available to the Model 4010R.

Model 4010 Radio Dispatch Console Service Manual
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MANUALS
Several manuals describe the operation, installation, service and programming of the Model 4010
Radio Dispatch Console. This manual includes the parts lists, schematics, and silkscreens for the
Model 4010. Below is a list of the Model 4010 manuals and a description of their contents.
Manual Title Zetron Part No. Description
Operator’s Manual 025-9226
Presents an overview of the console panels, a description of
the functions of each button, and a detailed description of the
Model 4010.
Installation Manual 025-9227 Presents a description of how to configure and install the
model 4010 console and accessories.
Service Manual 025-9228 Presents the parts lists, schematic drawings, and silkscreens
for the Model 4010.
Programming Manual 025-9229 Describes how to use the Console Programming System
(CPS) to program the console keys.
SPECIFICATIONS
PHYSICAL SPECIFICATIONS
Model 4010
Size height = 9″x width = 18″x depth = 14″
Weight 15 pounds
Model 4010R
Size height = 10.5″x width = 19″x depth = 10.5″
Weight 15 pounds
Model 4115B
Size height = 5.25″x width = 19″x depth = 2.25″
Weight 4 pounds
TELEPHONE INTERFACE SPECIFICATIONS
Lines Two end-to-end lines
Connector RJ11 modular jack
Incoming Call Ring detection on tip and ring pair
Call Answer Off-hook, tip and ring current draw
Ringer Equivalency 1.2 B
TRANSMIT ELECTRICAL SPECIFICATIONS
Audio Output +10 dBm max. into 600Ω
Output Impedance Transmit: 600Ωbalanced
Idle: 600Ωor 3500Ω
Distortion < 2% at full output. Signal-to-Noise > 50 dB
Hum, Cross-Talk all -50 dB at full output
Microphone Input -65 dBm for full output
Headset Input -20 dBm for full output
Page/Spare Input -15 dBm, not compressed
Freq. Response -3 to +1 dB from 250 Hz to 5000 Hz
Compression Input level increase of 30 dB above the knee of compression causes < 3 dB
output increase
RECEIVE ELECTRICAL SPECIFICATIONS
Input Impedance 600 or 10 kΩfor 4-wire
3500 Ωfor 2-wire
Line Balance 66 dB at 1000 Hz
Rx Sensitivity -30 dBm max at knee of compression; adjustable
Freq. Response -3 to +1 dB from 250-5000 Hz (except GT notch)
Compression Input level increase of 30 dB above the knee of compression causes < 3 dB
output increase
Distortion < 2%
Call Light Sensitivity -20 dB below knee of compression
Audio Output 5 watts each speaker
Mute Adjustable to -28 dB (with Individual Volume Control Option) or full mute
Mute time 1 second to indefinite
OTHER ELECTRICAL SPECIFICATIONS
Radio Control Local, E&M, Tone Remote, DC Remote.
Radio Channels 2-wire simplex/half-duplex or 4-wire half/full duplex.
DC Control
Operable up to 8 kΩloop resistance
Current programmable 15 mA max in 2.5 mA increments.
Accuracy ±0.25 mA.
Tone Control
15 standard tones supported, programmable (no trimmer adjustment) 650-2050 Hz
High Level Guard Tone duration 120/600 milliseconds
Function Tone Duration 40 milliseconds
Guard Tone Frequency 2175 Hz, alterable
Tone frequency accuracy ±0.2%, timing accuracy ±1.0 %
Local Control PTT normally open relay contact rated 1.0 A at 24 VAC/VDC
E & M Control Tx control via PTT relay, external 48 volts required
Busy Chan. Detect Local Cross-Busy detection, Guard Tone or
DC Control detection (LOTL) optional
Recorder Outputs
1 per channel (Tx/Rx audio summation), plus 1 output per console (various
combinations of select, unselect, and microphone audio)
0 dBm level, 600 ohm, single-ended outputs
Capacity 12 channels plus phone patch
Operating Temp +5 to +50 degrees Celsius
CONSOLE POWER REQUIREMENTS
Voltage +13.5 VDC
+11.5 VDC minimum — +15.0 VDC maximum
Current 2.5 amperes maximum
POWER SUPPLY (802-0091) SPECIFICATIONS
Voltage +13.5 VDC ±0.5 V
Current 3.5 amperes
AC Input
95 to 250 VAC
47 to 63 Hertz
1.2 amperes
Approvals UL, CSA, VDE, and CE

Model 4010 Radio Dispatch Console Service Manual
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THEORY OF OPERATION
SYSTEM DESCRIPTION
The Model 4010 Radio Dispatch Console is a single position unit that has many built-in features.
The Model 4010 is a desktop unit, and the Model 4010R is a rackmount unit. Both units have identi-
cal features and capabilities and are referred to as the Model 4010 in this manual, unless specifically
stated otherwise.
The console has individual channel volume, clock and volume meter, all-mute, simul-select, alerts,
site intercom, instant transmit, and individual channel frequency/PL select. The unit can be config-
ured for between two and twelve channels, in increments of two channels. The console is self-
contained and interfaces directly to either a base station or repeater wire lines.
The Model 4010 has a built-in paging encoder that is capable of generating all popular signaling
formats, including: Motorola/GE Two-tone, DTMF, Rotary Dial/1500Hz or 2805Hz, Plectron,
Quick-Call 1 (2+2), and 5/6-Tone Sequential. With the Instant Call Paging option, these tones can be
automatically routed to the proper channel. Without this option, the tones must be manually routed.
This Instant Call Paging option also allows individual control buttons to be programmed to send an
entire sequence of pages.
Each channel may be optioned to support a mix of control types: DC remote, tone remote, local
control, and E&M control. The DC remote control requires one optional DC Control Daughter Board
per DC channel. This DC Control Daughter board also has a line-operated transmit light (LOTL) to
indicate if a line is already in use via another control point. The tone remote control requires one,
optional Tone Remote System Adapter Board per system. Each channel that requires tone control can
now be configured with channel option switches. If a channel requires a LOTL indication, a Tone
Remote LOTL Daughter Board is then added for that specific channel.
A Phone Patch card is an option that allows the console operator to establish a patch between any
radio channel and a telephone line. The card has two telephone interfaces. The console can also
function as a push-to-talk, single-line telephone, giving the operator the ability to receive and place
telephone calls from the console. Only one Phone Patch card can be added to a system. This card
does not require one of the dual channel slots.
The Expanded Auxiliary I/O Card adds input and output capabilities over the standard eight inputs
and eight outputs that come with every Model 4010. The Expanded Auxiliary I/O Card does require
one of the Dual Channel Card slots.
The Model 4115B allows the system to be configured with an additional 60 programmable switches.
The system can accept a maximum of two expansion panels. The Console Programming System
(CPS) is used to define the function of any additional panels.
A variety of communications options may be configured with the console. The standard options are a
desk microphone, a gooseneck microphone or PTT handset with cradle, and/or a headset.
BLOCK DIAGRAM
The M4010 electronics consists of four board assemblies and a variety of option assemblies, which
are installed on the main Control Board. The main boards and option boards are listed below. A
maximum of six channel cards of any mix can be installed on the Control Board.
CONTROL
BOARD
702-9376
DUAL
CHANNEL
CARD #6
950-9715
DUAL
CHANNEL
CARD #1
950-9715
PHONE
PATCH
CARD
950-9719
950-9720
DISPLAY
BOARD
702-9378
KEYPAD
BOARD
702-9379
OPTION
DAUGHTER
CARD
TONE
REMOTE
SYSTEM
ADAPTER
950-0255
950-9922
60
BUTTON
PANEL
702-9432
M4010 PCB BLOCK DIAGRAM
OPTION
DAUGHTER
CARD
In discussion of the system’s operation, the associated U number of the ICs involved will be referred
to. The schematics of the various M4010 assemblies will be required for clarity.
CONTROL BOARD (702-9376)
The Control Board has a Motorola processor 68HC11F1, which controls the operation of the system.
The microprocessor is shown on sheet 2 of the schematic 008-9376. The system has 32K bytes of
EEPROM memory (U29), which contains all the program storage. The data storage is in 32K bytes
of battery backed RAM (U27). They connect to the microprocessor via an 8-bit data bus and 16-bit
address bus. The data bus also connects to the input and output ports for interfacing to external
signals. The other means of communication by the microprocessor is the serial peripheral interface
(SPI) and the UART U40. The SPI bus communicates with the channel cards and tone generation
module U15.

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The microprocessor uses devices selects to communicate with the components on the bus which are
generated by the port outputs PG7 through PG4. PG4 is used to generate the other devices selects of
U32. These selects control the I/O ports on the data bus.
The timing circuits of U20 and U18 take the 8MHz signal from the microprocessor and divide the
clock down to 4 MHz, 500 kHz, and 9615X16 Hz. The U40 UART used the 9615X16 clock to
generate the RS232 baud rate.
The LOOP IN and LOOP OUT connectors J13, J14, and J15 are used for expansion panels, console
parallel status, and programming the console. These connectors are driven by U45, a RS232 driver
which generates its own + and – 10 volts for drive voltage. The 68B50 UART, U40, sends and
receives the serial data and generates the IRQ* interrupt to the microprocessor.
The auxiliary input connector, P8, connects the general purpose inputs to the buffer U43. The micro-
processor reads this port with the SICS* device select. The auxiliary output connector, P7, contains
four open collector transistor outputs, U42, and four relay contact outputs, K2 through K5. U39 is an
eight bit latch which latches the signal from the microprocessor using device select POR*.
The various PTT and hook switch signals in the system are the inputs of U16 and U19. The micro-
processor monitors U16 and U19 to determine which audio source the operator wants to use. On
sheet 3, U24 is a latch for steering the audio sources. The latched outputs of U24 drive U22, 74C906,
which translates the 5V logic levels into 12V signals to drive the various audio switches.
The device selects (on sheet 3) for the SPI bus components is generated by CHSEL* and U36, U37
and U28. There 16 selects generated, CHEN0* to CHEN14* and the select to HC05. Each CHEN
signal will enable the bidirectional communication bus for that channel. The SPI bus consists of the
microprocessor signals D0 (data out), DI (data in) and the SCK* (500 kHz synchronous clock).
The 68HC705 (HC05) microprocessor of the schematic, generates all the tones (except for guard
tones) that are required in the console. The commands to the HC05 are through the SPI bus. The
tones are generated by the 8-bit output port PA, which has its data, latched into U14 by PB0. The
output of the latch goes through a resistor ladder network to U7. U7 is a low pass filter which goes to
a selectable volume control R62 to the tone bus driver U1. The tone bus goes to the channel card
interfaces.
The input power is on connector J5. The nominal voltage is 13.5 VDC. An alternate source (battery
backup) can be connected to J16. When the primary power is present, K1 is energized and a series of
diodes are connected to J16. This ensures the battery voltage is below the primary power source to
prevent a battery drain. When primary power is not present, K1 is released, and the series diodes are
no longer in series with the battery. Regulator VR3 provides the 5Vdc for the system. VR2 provides
the 5Vdc analog reference voltage and VR1 provides the 10Vdc analog power. R95, C98, R96, C88,
and U44A provide a filter and a low impedance source for the analog reference.
Each of the audio amplifiers (sheet 4) for the desk microphone (U1A and R70), the headset micro-
phone (U6B and R68) and the gooseneck microphone (U6A and R69) have an input adjustment
potentiometer before being routed to the multiplexer U12. The fourth input comes from the HC05
tone generator through the adjustment potentiometer R67. The audio switches of U24 con-trol the
audio steering to U8A. U8A forms a 30dB AGC circuit whose output goes to the MIC BUS through
U4B and to headset sidetone through U8B.
The select bus and unselect bus are the summing node of amplifiers U5B and U5A. The amplifier
U10A is the summing node for the patch bus. The select audio goes through the switch U9A-3 to the
buffer U10B, through the switch U9C-13 to the buffer U2A. This signal drives the select input of the
Display Board. The unselect audio takes a similar path through U9B-1, U2B and to the Display
Board. The select audio and unselect audio also are summed into amplifier U3A along with the Mic
Bus. U3A drives the COMB AUDIO OUT signal on P1, the Auxiliary Audio connector, and ampli-
fier U3B. The output of U3B goes through a peak detector circuit and forms the VU input for the
microprocessor’s analog to digital converter.
The AUXAUD input from P1 is an alternate source of audio that can be summed into the MIC BUS.
The input is optionally terminated with 600 ohms by JP5 and amplitude adjusted by R63. The source
is controlled by audio switch U11A and through the buffer U4A is sent to the summing node of U4B.
DISPLAY BOARD (702-9378)
The Display board contains the LCD display and the amplifier circuits for the select and unselect
speakers. The microprocessor has a bidirectional data path using U39 to drive the interface connector
P11. The read or writing to the LCD is controlled by LCDE, W/R* and A0 signals on P11. The LCD
display, DS1 on the Display Board, is capable of displaying two rows of 16 ASCII characters. R21 is
used to adjust the display’s viewing angle and contrast. JP2 is used to set the brightness of the
display. The three settings of JP2 change the display’s backlight current from 120mA to 45mA and
to 15mA.
The select audio from U2-1 and the unselect audio from U2-7 on the Control Board are sent to the
interface connector P11. Both amplifier circuits work identically. The select circuit has R33 to adjust
the audio level to the amplifier. R32 adjust the minimum audio level that R33 can be set to. R32 can
be set to no audio. The push/pull amplifier circuit can deliver up to 5 watts to the speaker. The output
of U4 is fed to the inverting input of U5 through R27. R34 is used to adjust the output DC level of
U5 for 0 Vdc across the speaker connector JP3.
KEYBOARD (702-9379)
The system keypad and channel keypad of the M4010 are sequentially scanned by the micropro-
cessor at a 50-millisecond interval. The scanning matrix is set up with U33 and U25 latches. P10 is
the interface connector for the hex keypad and system keys.
The C0 to C6 latched signals are presented through P10 (renamed to Rx and Sx) to U3 and U4 on the
Keypad Board. U3 and U4 outputs set the appropriate signal levels to the switch matrix. The indivi-
dual switch status is on the COM1 output of U3, which the microprocessor reads during each matrix
cycle.

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The CLK1 signal from the microprocessor clocks the B0 to B7 matrix data into latches U1 and U2.
The outputs of U1 and U2 drive the switch LEDs.
60-BUTTON PANEL (702-9432)
The scanning matrix outputs of U33 and U25 also go to the 60 Button Panel on P9. The C0 to C7
matrix data is connected to U10, U12, U23, U15 and U27 (renamed to Rx and Sx) on the 60 Button
Panel. U10, U12 and U27A outputs set the appropriate signal levels to the switch matrix. The indivi-
dual switch status is selected using RA through RC of U10 and the COM2 output is read by the
microprocessor during each matrix cycle.
The B0 to B5 matrix data is buffered by U25 and connected to 20 74HCT244 latches. The CLK* and
GRN/RED* signals are used to form the GRN CLK and RED CLK signals. The SA through SC
signals are the addresses of the multiplexes U12 and U24. U12 selects the appropriate green LED
latch, U1 through U9 and U26, that GRN CLK will clock the B0 to B5 data into. U24 does the same
for RED CLK and the red LEDs latches U11 and U13 through U21.
DUAL CHANNEL CARD (950-9715)
The Dual Channel Cards (DCC) are installed on the Control Board in six connectors J7 through J12
on sheet 5 of the Control Board schematic. These connectors also interface the DCC to the output
connectors J2, J3, and J4 as shown on sheet 6. Each DCC is capable of interfacing two radio chan-
nels with local control if no other optional cards are installed. The functionality of a channel can be
enhanced by adding the Tone Remote System Adapter to add tone remote capability to each channel
or adding the DC Remote Daughter Card to each channel that requires DC remote control.
The DCC schematic 008-9377 shows the interface connector on sheet 2. The SPI bus signals DI, DO,
SCLK* and two enable signals ENCHA* and ENCHB*, are the digital communication to the board.
The two channels function similar and only channel A will be followed. The data in from the micro-
processor (DI) are synchronously clocked to the 16 bit serial shift register U20 and U21 using the
CHWR* and ENCHA* signals. The data to the microprocessor (DO) is simultaneously clocked out
of U15 and an 8-bit shift register on the daughter board if one is installed at connector P2. U20 and
U21 form a 16-bit output latch, which controls the operation of the board. The outputs are buffered
by U22 and U23, which convert the 5V signals to 12V to drive the various audio switches. U15 and
the daughter card latch form a 16 bit input port which monitor the activity of the board.
The audio paths for channel A are shown on sheet 2. The four input audio busses are GT-BUS (guard
tone bus), PAT-TX-BUS (patch transmit bus), TONE-BUS (ANI and alert tones) and MIC-BUS
(operator’s audio). These busses are switched by the three switches of U13 to the input of U2A. The
audio switch U14B is used to select high or low level guard tone. U9A connects the output of U2A
to transmitting amplifier U2B. The potentiometer R11 sets the transmit level to the radio. The maxi-
mum peak to peak level on each bus is –10 dBm. The maximum gain on the card is 20 dB, which
gives the maximum output level of +10 dBm. The output of U2B goes the buffer U2C and the
inverting buffer U3A, which form the push/pull amplifier to the transformer T1. Switches U1A and
U1B send the transmitted audio through R4 while transmitting. R4 sets the transmit impedance to
600 ohms. During 2W (two wire) receive, the audio is switched through U1C. JP1 sets the receive
impedance to 600 ohms if in position A and to 3500 ohms if in position B. CR1 and CR2 are protec-
tion diodes. The output transformer T1 has the DC blocking capacitor C5 on the center taps of the
output windings.
The XMIT-UP-A signal control the transmit switches and relay K1. The relay contacts are routed
through JP5 and form the isolated PTT signal on the external connector. The BUSY-OUT-A signal is
driven by the open collector driver U30F to the external connector. The time of this signal is very
similar to the transmit signal PTT. The JP4 jumper setting controls the guard tone switch U13B.
Position A disables the guard tone switch and should be in this position for all channels that are not
tone controlled. Position B allows the switch to be controlled by the ENGT-A signals, which is the
normal position for tone control. Position C enables XMIT_UP_A to control the switch and is only
used when retrofitting early production units.
The 2W receive from U1C goes to potentiometer R10 for setting the receive audio level to the sum-
ming amplifier U3A. The 4W (four wire) audio input signals 4W-RX-A+, or -, come into the 10K
ohm transformer T2. JP2 sets the impedance of the 4W input to 600 ohms in position A or 10K ohms
in position B. The output of T2 goes to potentiometer R9 which sets the receive level and to the
summing amplifier U3A. The output of U3A goes to the AGC circuit formed by U3B. The receive
level should be adjusted by inputting the minimum audio level expected in the field and setting the
adjustment potentiometer for the knee of compression of the AGC circuit. The adjustment potentio-
meter for the audio receive circuit not use should be set for no audio (fully CCW) so the circuit does
not add any noise to the summing node of U3A.
The signal level at the output of the AGC circuit (U3B-7) is limited to 1.2 V peak to peak. The AGC
circuit will maintain this maximum peak level as long as the input is above the knee of compression
and within the 30dB (minimum) range. This signal drives U4A whose output forms a peak detector
and generates the CALLA signal when audio is present. The AGC output also drives the U4B ampli-
fier, which sets the audio peak level to –10dBm for the RXA test point and the REC-A signal
through U8B to the external interface. The RXA signal also goes to the PAT_RX_BUS through
switch U9C. U12 multiplexes the RXA signal through a resistive network to give 4dB adjustment
steps. The VOL signals to U12 selects which resistive path the audio takes and the MUTE_A signal
will inhibit all switches from closing and provide a completed muted signal. The output amplifier
U8A will drive either the SEL-BUS or UNS_BUS depending on the U28B switch setting. If no audio
muting is required, the audio will be switched through R73 and the peak output level of U8A will be
at –10dBm.
PHONE PATCH CARD (950-9719 OR 950-9720)
The Phone Patch interface to the Control Board is connector J6. This will interface either a Phone
Patch Card (with one phone channel) or the Dual Phone Patch Card. The card will allow the operator
to utilize a standard loop start telephone line. Both telephone circuits are identical. Only the opera-
tion of the A channel will be described.
The Phone Patch schematic 008-9403 (single) or 008-9522 (dual) shows the interface connector on
sheet 2. The SPI bus signals DI, DO, SCLK* and two enable signals ENCHA* and ENCHB*, are the

Model 4010 Radio Dispatch Console Service Manual
12
digital communication to the board. The two channels function similar and only channel A will be
followed. The data in from the microprocessor (DI) are synchronously clocked to the 16 bit serial
shift register U26 and U29 using the CHWR* and ENCHA* signals. The data to the microprocessor
(DO) is simultaneously clocked out of U35. U26 and U29 form a 16-bit output latch, which controls
the operation of the board. The outputs are buffered by U18 and U23, which convert the 5V signals
to 12V to drive the various audio switches. U35 is an 8-bit input port that specifies the board type
and monitors the ring detector and call activity.
The telephone line’s tip and ring are connected to J1. In the off-hook state, the signal goes through
relay K1 to the ring detect circuit of U19. The signal flows through U22C, U22F and U28A to U35.
The microprocessor reads the status of U35 with the SPI bus. The ring detect signal also goes
through U18A to the tone generator U6. When a ring is detected, U6 generates a ringing tone at pin
14 and sums it on the audio receive bus at U3A. When the call is answered, relay K1 is activated
with the AUXOUTA signal and the line is switched to relay T1.
The three input audio busses are PAT-TX-BUS (patch transmit bus), TONE-BUS (DTMF tones) and
MIC-BUS (operator’s audio). These busses are switched by U17A and U17B to the input of U8B.
The output of U8B goes to the audio switch U15C is used to enable the audio to the output amplifier
U4A. The audio also goes to U11, which forms a peak detector that prohibits the transmitted audio
from exceeding -10dBm average for over 2 seconds. The output of the detector controls the audio
switch U15C through U18C.
The center tap of the transformer T1 is connected to the line termination network of U1A. Potentio-
meter R16 set the resistive balance and is usually set for minimum sidetone. R21 is used for capaci-
tive balance and is also adjusted for minimum sidetone. The audio receive amplifier, U1B, goes
through the switch U15B and to the audio level adjustment R18. U3B form a peak detect circuit and
generates the voice activated signal to U35. The receive audio also goes to the summing node of
U3A. The audio signal goes to the switch U15A to the PATCH-RX-BUS and to U13, the volume
control selector. U13 multiplexes the RXA signal through a resistive network to give 4dB adjustment
steps. The A, B and C signals to U13 selects which resistive path the audio takes and the INH signal
will inhibit all switches from closing and provide a completed muted signal. If no audio muting is
selected, the audio will be switched through R72 giving the maximum signal level. The output
amplifier U8A will drive either the SEL-BUS or UNS_BUS depending on the U17C switch setting.
AUXILIARY I/O CARD (950-9721)
The Auxiliary I/O Card will expand the I/O capability of the system by adding 6 outputs and 6
inputs. The card is installed in any of the six dual channel card slots and the connection to the I/O are
on the interface connectors J2 through J4 depending on the slot(s) the card is installed in.
The I/O Card schematic 008-9448 shows the SPI bus signals DI, DO, SCLK* and enable signal
ENCHA*. The data in from the microprocessor (DI) are synchronously clocked to the 8-bit serial
shift register U2 and into the output latch using the CHWR* and ENCHA* signals. Six of the out-
puts use the transistor driver IC, U1, to control the output relays K1 through K6. The data to the
microprocessor (DO) is simultaneously clocked out of U5 and U6. U5 monitors the six input signals
and U6 identifies which card type is installed.
The inputs from the interface connector have a 10K-ohm pull-up to 12Vdc, a 10K-ohm series
resistor, a Zener diode to limit the voltage level and a .01 microfarad capacitor for noise filtering. U4
is a 74HC14 that provides a Schmitt trigger input.
The relay outputs each have two jumpers associated with them. Output 1 has one connection RLY1A
on P4-5 and the second connection RLY1B on P4-4. The RLY1A connects to JP7, which makes a
normally open output in position A and a normally closed output in position B. The common connec-
tion of K4 goes to JP1, which is connected to RLY1B in position A. With JP1 in position B the relay
common is connected to digital ground. With jumpers in both positions B and D the RLY1A signal
is connected to ground when the output is on and RLY1B is connected to ground when the output is
off.
TONE REMOTE SYSTEM ADAPTER (950-0255)
The Tone Remote System Adapter adds the tone remote capability to all the radio channels. The card
adds the 2175Hz guard tone to the system and guard tone filters on the four audio busses. The
schematic for the card is 008-0037.
From the Control Board’s interface connector J1, the unselect bus (UNS IN), select bus (SEL IN),
microphone bus (MIC IN) and the patch bus (PAT IN) all go through a low-pass filter to a 2175HZ
notch filter. The switch capacitor filter (U19 through U22) is a 35dB notch filter centered at 2175Hz
and a 200Hz bandwidth. The output of the notch filter, N/HPB, goes trough a low-pass filter and
back to the interface connector J1. The jumpers JP6 and JP7 allow the filters to be removed for the
patch bus and mic bus.
U17 interface to the crystal Y1 and along with U14 and U16B form the 2175Hz oscillator. U18B and
U15 form a filter and amplifier for the guard tone. R47 provides the amplitude adjustment.
Sheet 2 of the schematic is for audio delay, and the components are not included with this assembly.
TONE REMOTE SYSTEM ADAPTER W/AUDIO DELAY (950-9922)
The Tone Remote System Adapter with Audio Delay adds the tone remote capability to all the radio
channels. The card adds the 2175Hz guard tone to the system and guard tone filters on the four audio
busses. The card also provides a variable audio delay for two of the busses, patch bus and
microphone bus. The schematic for the card is 008-9896.
From the Control Board’s interface connector J1, the unselect bus (UNS IN), select bus (SEL IN),
microphone bus (MIC IN) and the patch bus (PAT IN) all go through a low-pass filter to a 2175HZ
notch filter. The switch capacitor filter (U19 through U22) is a 35dB notch filter centered at 2175Hz
and a 200Hz bandwidth. The output of the notch filter goes through a low-pass filter. The select bus
and unselect buses are then the UNS OUT and SEL OUT signals on connector J1. The patch bus and
mic bus go to the jumpers JP6 and JP7 which allow the notch filters to be bypassed and then go to
the audio delay circuits on sheet 2.

Model 4010 Radio Dispatch Console Service Manual
13
U17 interface to the crystal Y1 and along with U14 and U16B form the 2175Hz oscillator. U17 also
provides the 3.48MHz clock for the audio delay circuit of sheet 2. U18B and U15 form a filter and
amplifier for the guard tone. R47 provides the amplitude adjustment for the guard tone.
On sheet 2, the patch bus and mic bus go to a continuously variable slope delta (CVSD) modulator
U12 and U13. The DIGOUT of the modulator is the digitized audio which goes to a buffer, U8, and
is enabled to the DRAM input by /OE. The same DRAM data goes to the DATA input of U5 and
U9, the CVSD demodulators. AOUT of U5 and U9 is the delay audio output, which is filtered and
put back on the MIC OUT and PAT OUT signals of J1. The MIC delayed audio can be bypassed by
activating the audio switch U4A, which the main processor has under software control. This switch
is activated when using the Phone Patch Card. The jumpers JP2 and JP3 enable the delay circuit to
be bypassed for either bus.
The cycle rate and synchronous signals for the audio delay circuit are generated by the PAL, U7.
U16A divides the 3.28MHz clock by 8 and forms the master clock for the PAL’s internal state
machine. The PAL generates seven states for circuit timing at 62KHz cycle rate. JP1 selects the
audio time delay options for the PAL at .25, .50, .75, and 1.0 seconds. The time settings determines
when the CLR (clear) signal is generated to restart the address counters U2 and U11. The multi-
plexers U3 and U10 are interleaved by /OE for the RAS and CAS addresses of the 4Meg DRAM,
U6. The stored digitized data from RAM is clocked out to U5 and U9 in the first part of the clock
cycle to form the delayed audio output. The received audio data from U12 and U13 is stored in RAM
on the second part of the clock cycle.
DC REMOTE CHANNEL ADAPTER (950-9716)
The DC Remote daughter card adds the DC current control to the channel it is installed on. The card
is capable generating a current source from zero to 15 milliamps in 0.5 milliamp increments. The
card also provides the line operator transmit light (LOTL) indication if the channel is busy to the
operator. The schematic for the card is 008-9380.
The interface to the line transformer’s center taps is LOOP+ and LOOP- and the external line
connections are BSY+ and BSY-. The signals associated with the DC current control is CURRENT*,
CLEAR, HOLD and NEG-POL. The steady state levels provide a ‘1’ at U4A-3 and keeps Q1 turned
on. This causes current to flow in U5 and applies voltage at U5-4. This voltage is generated by the
150Vdc through R9 and regulated by the CR6 Zener to 6Vdc. With voltage applied, the inputs to
U6A and U6B are both at ‘1’. This causes the clock and clear inputs of U7A and U7B to be in the
inactive state. U7A and U7B form a 32 bit counter.
The CLEAR signal will turn off Q1 and the output of U5. The inputs of U6A and U6B will then start
to discharge their input capacitors through their series 330K resistors and R11. The CLEAR signal
will be maintained longer than the RC time constant formed by C8, R10, and R11 to generate a reset
signal to U7.
When the HOLD signal is low, the CURRENT* signal enabled to turn off Q1. CURRENT* is a
series of pulses which allows the input of U6B to discharge through R12 and R11 but are shorter in
duration than the time required to trigger U6A. The U6B signal will generate a series of clock pulse
to the U7 counter. The count of zero is no current and the maximum count of 30 is for a 15 mA out-
put current. The binary count goes to the resistor R/2R network RP1 and to the feedback amplifier
U8B and Q2. The potentiometer R15 is adjusted so each binary count produces 0.25 mA of collector
current through Q2 and the LOOP- signal when connected to a load through the output transformer.
The relay K1 is driven by the NEG-POL signal to reverse the direction of current flow through the
load.
The power source for the current generator is PS1, which is a 12Vdc to 150Vdc switching regulator.
The 150V source goes through the blocking diode CR10 and relay K1 to the LOOP+ connection.
The BSY+ and BSY- signals come from the radio line inputs. If the line is in use by another parallel
console, there will be a voltage potential across the signal pair. This voltage will charge C4 through
R6. The diode bridge will connect the charge of C1 across the input of U2. The CURRENT* signal
is a low going pulse which turns on U3 collector and dumps the C1 charge through U2 input. The
collector of U2 produces a high at U1A-2 and the trailing edge of CURRENT* will latch the U1A-2
state into U1A. This BSY ‘1’ state will cause the LOTL* signal at J1 to go low and light the LOTL
LED on the rear panel.
When the radio line is no longer in use, the BSY lines have no voltage and C1 is discharged. The
next CURRENT* pulse will clock a ‘0’ into U1A returning LOTL* high. Jumper JP1 disables the
LOTL circuit in the B position.
TONE REMOTE LOTL CHANNEL ADAPTER (950-9719)
The Tone LOTL Daughter Board will generate a LOTL signal if a tone remote parallel console is
using the radio line. The schematic for the board is 008-9450. The board is the same as 950-9722
with the DTMF decoder circuit not installed.
From the Dual Channel Card’s daughter board connector J1, the receive audio (RX) signal goes to an
internal amplifier input AIN of U5. U5 is a band pass, switched capacitor filter that is tuned for a
center frequency of 2175Hz at the CMOS and RC inputs. The C8, R15, R14, and R16 form the tun-
ing circuit. When a high level guard tone at 2175Hz is passed through the filter, the amplifier U4A
forms a peak detector to the input of U3A. The holding capacitor C5 will hold the detected peaks and
provide a steady-state signal at U3B. With JP1 in position A, the signal will drive Q1 and the LOTL
LED on the back panel and the feedback FET Q2. Q2 will lower the impedance in the input amplifier
U4A and increase the gain. The gain will increase 30dB so the amplifier will keep locked on the low
level guard tone signal. The LOTL* output to the channel card will remain low until the guard tone
signal is dropped.
INDIVIDUAL CHANNEL DTMF ANI DECODER (950-9722)
The Tone LOTL/DTMF Decoder Daughter Board will decode any DTMF signals and generate a
LOTL signal if a tone remote parallel console is using the radio line. The schematic for the board is
008-9535.

Model 4010 Radio Dispatch Console Service Manual
14
From the Dual Channel Card’s daughter board connector J1, the DTMF decode circuit interfaces the
receive audio (RX) signal. This signal goes to amplifier U4B and to the AIN input of U1, the DTMF
decoder. When a valid DTMF signal is detected, the DV output high and clocks the latch U2B.
When the microprocessor reads the status of the card with the SPI bus, the ENCH signal goes high
and generates a load (LD) signal to U6. U6 will read the output of U2B (the latched DV signal) and
the DTMF decoded digits of U1. The SPI clock (SCLK*) will shift out the latched data on the
DATA line. The SCLK* signal will also clear the latched DV signal (U2B).
The RX signal also goes to an internal amplifier input AIN of U5. U5 is a band pass, switched capa-
citor filter that is tuned for a center frequency of 2175Hz at the CMOS and RC inputs. The C8, R15,
R14, and R16 form the tuning circuit. When a high level guard tone at 2175Hz is passed through the
filter, the amplifier U4A forms a peak detector to the input of U3A. The holding capa-citor C5 will
hold the detected peaks and provide a steady-state signal at U3B. With JP1 in position A, the signal
will drive Q1 and the LOTL LED on the back panel and the feedback FET Q2. Q2 will lower the
impedance in the input amplifier U4A and increase the gain. The gain will increase 30dB so the
amplifier will keep locked on the low level guard tone signal. The LOTL* output to the channel card
will remain low until the guard tone signal is dropped.
INDIVIDUAL CHANNEL 5-TONE ANI DECODER (950-9707, 950-9708)
The Channel 5-Tone ANI Decoder Board will monitor the receive audio signal and decode either
ZVEI (950-9707) or CCIR/EEA (950-9708) tone received on the channel it is installed on. Both
options use the same circuit board (schematic 008-0147, BOM 702-0147). They differ only in the
software installed.
From the Dual Channel Card’s daughter board connector J1, the receive audio RX signal goes
through amplifier U4A, through a high-pass RCF filter (R3, C6), and to the 5-tone detector U2.
When a valid tone is detected, U2 generates the IRQ output, which generates an interrupt on U1. The
U1 microcontroller, a 68HC05 derivative, reads the tone from the decoder using the serial bus that
connects the two chips (signals SERCLK, COMMAND, REPLY, and CS). After some additional
processing to validate the tone, the microcontroller sends the tone to the M4010 main board using
the SPI bus, signals SCLK*, ENCH*, and D0 signals.
INDIVIDUAL CHANNEL FSK ANI DECODER (950-9709)
The Channel FSK ANI Decoder Board will monitor the receive audio signal and decode the FSK
tones received on the channel it is installed on. The schematic for the board is 008-9583.
From the Dual Channel Card’s daughter board connector J1, the receive audio RX signal goes
through amplifier U7A and to the 5-tone detector U3 (U2 and U4 are not installed). When a valid
FSK pattern is detected, U3 will generate the RXSYN output, which is synchronous internally to the
incoming data. This signal connects to Q1, which generates the IRQ* interrupt to U1. The U1 pro-
cessor, 68HC05, will read the data on D4 and the carrier detect signal on D5 and place the data in the
internal SPI bus register. The main microprocessor will read the information with the SCLK*,
ENCH* and D0 signals.
INDIVIDUAL CHANNEL GE-STAR ANI DECODER (950-9625)
The Channel GE-Star ANI Decoder Board will monitor the receive audio signal and decode the tones
received on the channel it is installed on. The schematic for the board is 008-9741.
From the Dual Channel Card’s daughter board connector P1, the receive audio RX signal goes
through amplifier U7B, the wave shaping circuits of U6 and the U5 comparater. The output of U5 is
the IRQ interrupt to U2, 68HC05 microprocessor. U2 will convert the data into the ANI digits and
place the data in the internal SPI bus register. The main microprocessor will read the information
with the SCLK*, ENCH* and D0 signals.

Model 4010 Radio Dispatch Console Service Manual
15
SYSTEM REPAIR
DIAGNOSTIC MESSAGES
If the console’s continuous system diagnostics finds a problem, the console LCD will display a diag-
nostic message indicating the general nature of the problem. The following table shows the various
diagnostics messages and their meanings.
Message Meaning
THX nnn
An internal error has occurred on the console. The “nnn” is a three digit, decimal number
that the factory can use to help isolate the condition. Be sure to record this number. This
condition does not usually prevent normal operation.
CardErr The programmed channel configuration of the console does not match the channel cards in
the console. Channels that are affected will not operate until the problem is corrected.
CPSdataErr
The Model 4010 CPS configuration data has been corrupted or was never initialized.
Reprogram the Model 4010. Refer to the Model 4010 Programming Manual (Part No. 025-
9229) for more information.
CARD REMOVAL AND INSTALLATION
To remove and install the Dual Channel Card and other removable option cards, follow the steps
below:
1. Disconnect power.
2. Open the console by unscrewing the two latches on the back of the console and lifting the top
open.
Caution
Keep the front of the unit on the top of the table; do not let the front hang over the table
edge. The console can easily be knocked off balance onto the floor when the front hangs
off the table.
3. To remove a card, unscrew the single mounting screw on the rear of the console and rock and
lift the card up and away from the back of the unit.
4. To install a card, insert the side away from the back panel in first, then rock the card towards
the back panel into position. Take care that the LEDs get properly positioned. Secure the card
by inserting the screw through the hole in the back panel into the bracket on the card.
5. Close the console and tighten the two latches on the back of the unit.
6. Connect to power; the configuration changes are sensed on power up.
MODEL 4010 PROGRAMMING CABLE WIRING DIAGRAM
SERVICE DIAGRAMS
The remainder of this manual is devoted to the various PCB parts lists, schematics, component silk-
screens, and assembly drawings that apply to the Model 4010 and Model 4115 consoles.

Model 4010 Radio Dispatch Console Service Manual
16
MODEL 4010 COMMUNICATIONS CONSOLE ASSEMBLY (024-0171A)

Model 4010 Radio Dispatch Console Service Manual
17

Model 4010 Radio Dispatch Console Service Manual
18

Model 4010 Radio Dispatch Console Service Manual
19
MODEL 4010R RACKMOUNT CONSOLE ASSEMBLY (024-0176A)

Model 4010 Radio Dispatch Console Service Manual
20
MODEL 4010 BOARDS
Control Board Parts List (702-9376L)
LEGEND:
+= OPTION, INSTALL PER CUSTOMER ORDER
#= NOT INSTALLED
^= INSTALLED ON HIGHER ASSY
== SUBSTITUTE PART
ZETRON MODEL 4010 CONTROL BOARD PARTS LIST:
Item Qty Reference Part No. Description Part Value
1 1 R92 101-0025 10 OHM 1/4W 5% CARBON FILM
2 3 R6,R20,R49 101-0049 100 OHM 1/4W 5% CARBON FILM
3 5 R37,R43,R98,R99,R100 101-0057 220 OHM 1/4W 5% CARBON FILM
4 3 R36,R84,R85 101-0061 330 OHM 1/4W 5% CARBON FILM
5 2 R13,R53 101-0068 620 OHM 1/4W 5% CARBON FILM
6 9 R2,R4,R8,R25,R30, 101-0073 1.OK 1/4W 5% CARBON FILM
R31,R32,R39,R91
7 6 R27,R28,R29,R58, 101-0074 1.2K 1/4W 5% CARBON FILM
R102,R103
8 1 R78 101-0085 3.3K 1/4W 5% CARBON FILM
9 3 R5,R81,R97 101-0089 4.7K 1/4W 5% CARBON FILM
10 21 R9,R35,R38,R48,R59, 101-0097 10K 1/4W 5% CARBON FILM
R60,R65,R66,R73,R74,
R75,R76,R77,R79,R82,
R83,R86,R88,R90,R95,
R101
11 5 R12,R16,R21,R23,R24 101-0101 15K 1/4W 5% CARBON FILM
12 1 R19 101-0103 18K 1/4W 5% CARBON FILM
13 4 R14,R33,R51,R52 101-0104 20K 1/4W 5% CARBON FILM
14 1 R89 101-0105 22K 1/4W 5% CARBON FILM
15 1 R26 101-0106 24K 1/4W 5% CARBON FILM
16 1 R15 101-0107 27K 1/4W 5% CARBON FILM
17 2 R72,R40 101-0109 33K 1/4W 5% CARBON FILM
18 1 R50 101-0111 39K 1/4W 5% CARBON FILM
19 2 R46,R34 101-0113 47K 1/4W 5% CARBON FILM
20 1 R3 101-0115 56K 1/4W 5% CARBON FILM
21 15 R1,R10,R18,R22,R41, 101-0121 100K 1/4W 5% CARBON FILM
R47,R54,R55,R56,R57,
R61,R64,R71,R80,R96
22 1 R45 101-0125 150K 1/4W 5% CARBON FILM
23 2 R11,R44 101-0129 220K 1/4W 5% CARBON FILM
24 1 R17 101-0141 680K 1/4W 5% CARBON FILM
25 1 R42 101-0148 2.0M 1/4W 5% CARBON FILM
26 1 R87 101-0160 10M 1/4W 5% CARBON FILM
27 1 R94 103-0047 RESISTOR, 47 OHM 1W 5%
28 1 R93 103-0175 RESISTOR, 75 OHM 2W 5%
29 1 RV1 105-0002 VARISTOR 14V AC
30 7 R7,R62,R63,R67,R68, 108-0103 10K POT 4 TURN
R69,R70
31 1 RP1 119-0003 3.3K x 7 BUSSED 8-PIN SIP
32 1 RP5 119-0006 10K x 9 BUSSED 10-PIN SIP
33 2 RP4,RP3 119-0008 10K x 7 BUSSED 8-PIN SIP
34 1 RP2 119-0021 R/2R 100K/200K 10 PIN SIP
35 7 C4,C5,C7,C17,C31, 150-0096 1000 PF 1KV +-10% CERAMIC DISC YSP
C32,C34,C86#
36 39 C35,C38,C40,C45, 150-0110 .01 UF 50V 80%-20% CERAMIC DISC
C48,C49,C50,C51,C52,C53,
C56,C57,C58,C59,C60,C61,
C63,C64,C65,C67,C68,C69,
C71,C72,C73,C74,C75,C76,
C77,C78,C79,C80,C81,C83,
C84,C88,C99,C101,C103
37 1 C27 151-0010 100PF 100V/200V +-10%/5% CERAMIC NPO
38 2 C54,C55 151-0022 22PF 100V/200V +-10%/5% CERAMIC NPO
39 4 C3,C6,C21,C22 151-0028 270PF 100V/200V +-5% CERAMIC NPO
40 1 C43 151-0080 .0022UF 100V +-10% CERAMIC X7R
41 13 C9,C11,C16,C20,C33, 151-0181 .1UF 50V +-10% CERAMIC X7R
C39,C41,C42,C44,C46,
C91,C95,C97
42 1 C26 152-0085 .01 UF 50V +- 5% POLYESTER