Altec 1594B User manual

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1 ~:-~?:<?S:.+v.,$+~~7:~*..7 . . :g: POWER AMPLIFIER
OPERATING
INSTRUCTIONS
I- NOTICE
Read this manual before operating
the AI-TEC 15948Power Amplifier.
..
FEATURES
100 Watts of Output Power at Less than 1% THD from Automatic Transfer to Battery Operat~onif AC Power
35 Hz to 20 kHz Fails
Transformer - Isolated Outputs for 4. 8 and 16 Ohmsand Low Power Consumption
for 25V and 70.7V DistributionSystems
Low Heat Generation
Switchable Highpass Filter Protects Driver Loudspeaker
from Excessive Low
- Frequency Power Demands Hinged FrontPanel for Easy'Maintenance
Exclusive Active Dissipation Sensing Circuit Protects
Output Transistors Small Size
AC or Battery Operation LightWeight

ACCESSOR lES 1 4 1 I Figure 2. Typical Frequency Response 1 I
DATA CONTENTS
INSTALLATION
RACK INSTALLATION
SHELF INSTALLATION
VENTILATION
ELECTRICAL
120 Volt, 50160 Hz Power Connections
240 Volt, 50160 Hz Power Connections
Battery Connections
lnput Connections
Output Connections
Speaker Matching
Speaker Power Distribution
l tem
SPECIFICATIONS
DESCRIPTION
OPERATION
Page
3
4
Graphics
Figure 1. Typical Power Output Versus Fre
-
quency for 0.5%THD and 1%THD
(8
- Ohm Load)
CONTROLS AND INDICATORS
I HIGHPASSFILTER
Page
3
SERVICE
ACCESS
ADJUSTMENT OF POWER DRIVER
BALANCE CONTROL
ADJUSTMENT OF OUTPUT "Q"BALANCE
CONTROLS
ASSEMBLY REPLACEMENTS
Fuses
Pilot Lamp
Power Driver PCB
RECOMMENDED SERVICE TECHNIQUES
Transistor Orientation
Replacing Power Transistors
Testing Transistors
Replacing PCB Components
Repairing Fractured or Damaged PCB
Conductor
Characteristics
Figure
3.
Typical % THD Versus Frequency
for 100
- Watt Output
Figure 4. Typical
% THD Versus WattageOut -
put at 1000 Hz (8-OhmLoad)
Figure
5.
Front View With Hinged Panel Open
Figure 6. Rear View of 15948 Power Amplifier
Figure
7. Converting to 240V ac, 50/60 Hz
Operation
3
3
3
4
5
6
Figure 8. Socket Wiring for Transformer -
Isolated lnput Using 15095A Line
Transformer
Table
II. Speaker Outputs
Figure 9. Typical Solid
- State Component
Configuration
Figure
10. Component Locations Inside Main
Chassis
Figure 11. Component Locations on Rear of
Chassis
Figure 12. Schematic (3D186 11). 15948 Power
Amplifier
Figure
13. Component Locations 130661-41,
Power Driver PCB Assembly
6
Table
I. Terminals and Applications of INPUT
Terminal Board
PARTS LIST
IILl I
6

SPECIFICATIONS
I I I
I Type: I Power amplifier I
Gain:
lnput
Sensitivity:
Power Outout:
Frequency
Response:
lnput
Imoedance:
Load
Impedance:
Load Voltage:
Output
Impedance:
Output Noise
Level:
Controls:
Power
Requirements:
Operating
Temperature
Range:
Dimensions
Weight:
Color:
Accessories:
0.8V rms for rated output
100 watts at less than 1% THD
from 35Hz to 20 kHz
100 watts at less than 0.5% THD
from 50Hz to 15 kHz
+1 dB from 20 Hz to 20 kHz
-
15.000 ohms (potentiometer)
150 or 600 ohms with 1509!5A
Line Transformer
15.000 ohms with 15335A L.ine
Transformer
4, 8. 16 or 50 ohms (transformer-
isolated output)
20. 28. 40
or 70.7 volts
Typically less than 10% of load
impedance
85 dB below rated output
1 VOLUME control, continuously
variable
1 primary power ON.OFF switch
1 FILTER IN
- OUT switch (rear
panel)
1201240V ac, 50160 Hz -
20W at zero signal
180Wat 33W output
290W at 100Woutput
- or -
24128V dc -
0.2A at zero signal
5.OA at 33W output
8.5A at 100Woutput
Battery minus
(-) is ground
Up to 55'~(131°F) ambient
7"H x 19"Wx 8.112 " D
35 pounds, 8 ounces
ALTEC green
ALTEC 15095A Line Transformer
ALTEC 15335A Line Transformer
ALTEC 42526 Shelf Mount Cover
NOTE
I ACCESSORIESMUST BE ORDERED 1
Figure 1.. Typical Power Output Versus Frequency for
0.5% THD and 1% THD (8
- Ohm Load)
Figure
2. Typical Frequency Response Characteristics
Figure 3. Typical
% THD Versus Frequency for 100 - Watt
Output
SEPARATELY
1
Figure 4. Typical % THD Versus Wattage Outputat 1000
Hz (8-OhmLoad)

DESCRIPTION
The ALTEC 15948 Power Amplifier delivers up to
100
watts of output power for all Types of sound reinforcement
Systems. It remains stable with operating conditions of
varylng line voltages and with all types of loads, including
long, unloaded speaker lineshaving considerable capacitance.
Frequency response and output power characteristics are
shown in Figures 1 through 4.
A switchable, two - section highpass filter is provided topro -
tect driver loudspeakers from excessivelow - frequency power
demands.
ALTEC's Active Dissipation Sensing Circuit provides fail -
safe protection for the output transistors. Circuit action is
immediate and effective at all frequencies within the pass
-
band of the amplifier, limitingonly that portion of proyam
material that would damage or degrade the output
transistors.
ACCESSORIES
A plug.in 15095A or 15335A Line Transformer is available
to provide line isolation. Input sensitivity for full
- rated
amplifier output ir 0.2V rms with the 15095A Transforiner
and 0.8V rmswith the 15335A Transformer.
The 42526 Shelf Mount Cover
is available to enclose the
15948 for shelf use. It tilts the 15948 for easy accesr to
front panel controls. The sides and topextend beyond the
front panel topreventaccidental changes
of control settihgs.
The cover provides easier handling for portability and it is
sturdy enough to support lightweight equipment placed on
top of it. Four polyethylene feet prevent marring of sur -
faces. The ALTEC green finish matches the front panel of
the 15948.
INSTALLATION
The 15948 may be installed in a standard 19
- inch equip -
ment rack, or in the 42526 Shelf Mount Cover accessory
for shelf
use. Vertical space requkred 1s 7 inches (fourrack
units).
RACK INSTALLATION
Step
1. Remove four screws securing front panel. Open
and lower panel
as shown in Figure 5.
Step 2. Install 15948 in equipment rack with appro
-
priate four screws supplied.
Step 3. Close front panel and secure with four screws
Rreviously removed.
SHELF INSTALLATION
The 15948 may be shelf mounted as desired after installing
the ALTEC 42526 Shelf Mount Cover (refer to 42526
Installation Instructions).
VENTILATION
The 15948 generates minimal heat during normal use. Al
-
though the amount of heat is relatively low, the amplifier
POWER DRIVER PCB POWER DRIVER BALANCE CONTROL PRIMARY POWER TERMINAL BOARD
"QN BA LANCE
CONTROLS
PCB S\'il'/tl~
CONNtLlO11 (J21
Figure 5. Front View With Hinged Panel Open

must be ventilated to prevent an excessive temperalure rise.
Because transistors are heat sensitive, the 15948 should not
be placed adjacent toheat
- generating equipment or in areas
where ambient temperature exceeds 55'~(131'~).
If the 15948 is installed in an equipment rack or cabinet
withother heat
- producingequipment installed above andlor
below (two or more 15948's or one 15948 with real time
analyzer, oscilloscope, etc.), space must be provided be
-
tween the units or the 15948 may become too warm. The
1-314" perforated panel (ALTECPart No. 10399) is recom -
mended for this purpose. When several amplifiers or other
heat - producing units are installed in a single rack or
cabinet, acceptable air temperature may be in do~~bt.To
determine temperature conditions, operate the system until
temperature stabilizes, then measure air temperature witha
bulb
- type thermometer held at the bottom of the upper -
most amplifier. Do not let the thermometer bulb touch
metal because the metal probably will be hotter Than the
ambient air. If air temperature exceeds 55'~(or if it
is a
hot day), the equipment should be spaced farther apart or a
blower should be installed toventilate the cabinet.
CAUTION
Do not block the cvver ventilation holes
when placing other equipment on the
42526 Shelf Mount Cover accessory.
When shelf
- mounting the 15948. allow at
least 1-314" between the unit and any
wall behind it to assure air circulation
past the output transistors.
ELECTRICAL
120 Volt,
50160 Hz Power Connections
Equipment supplied for domestic use is provided with the
power transformer primary strapped for 120 volts (terminals
BATTERY POWER
TERMINAL BOARD (TB4)
1 to 2 and
3 to 4 on TB3). The power input nameplate,
adjacent to the power cord on the chassis,
is mounted to
show the appropriate side specifying the connections (see
Figure 6). Verify that line voltage
is in accordance with the
voltage rating before connecting the 15948 to line power.
240 Volt,
50160 Hz Power Connections
Export equipment
is provided with the power transformer
primary strapped for 240 volts (terminals 2 to 3 on TB3).
The power input nameplate, adjacent to the power cord on
the chassis,
is mounted to show the appropriate side specify -
ing the connections.
For a 15948 previously wired for 120V ac primary power,
use the following procedure to change wiring for 240V ac,
50160
Hz operation:
Step
1. Remove four screws securing front panel, open
and lower panel.
Step 2. Locate terminal board TB3 above power trans.
former TI(see Figure 5).
Step 3. Remove strap
" A " connecting terminals 1 and
2 and remove strap "8" connecting terminals 3
and
4; solder strap " C " to terminals 2 and 3
(see Figure 7).
Step 4. Remove voltage
- rating plate (see Figure 6) from
chassis, reverse and reinstall to show 240V ac
rating.
Step
5.
Close front panel and secure with four screws
previously removed.
TRANSFORMER
ACCESSORY FILTER
RECEPTACLE SWITCH
(J1) (51)
BATTERY POWER VOLTAGE OUTPUT INPUT
FUSE (F2) RATING TERMINAL BOARD (TB2) TERMINAL BOARD (TBI)
PLATE
Figure 6. Rear View of 15948 Power Amplifier

Figure 7. Converting to 240V ac, 50160 Hz Operation
Battery Connections
If desired, the 15948 may be connected to an external
24/28 volt battery with minus
(-1 as ground. Terminals for
the dc power connections are on TB4 (see Figures 6 and
12). Ifac power fails, transfer to dc power is instantaneous,
automatic and silent. A built
- in charging circuit supplies a
100 mA trickle current to maintain battery charge during
ac operation. The battery power supply
is not operatedby
the primary power ON.OFF switch on the front panel, If
switching of battery power is desired, an external relay or
switch should be provided by the user.
lnput Connections
lnput connections may be either direct.coupled or
transformer
- isolated at the INPUT terminal board (see
Figure 6). Direct coupling
is accomplished by connecting
the input leads (shielded conductor recommended) to
terminals 1 and
2.
Terminal 2 is ground. Table I lists the
terminals and applications of the INPUT terminal board.
Table
I. Terminals and Applications of
INPUT Terminal
Terminals
1.2 (GND)
For transformer - isolated input, a plug - in 15095A or 15335A
Line Transformer must be plugged into receptacle J1 (see
Figure 6). The input leads
are connected to terminals 3 and
4 of the INPUT terminal board.
Function/Application
3.4
When shipped from the factory, pins 3 and 4 of
J1 are
strapped together to provide
a 600 - ohm input. A 150 - ohm
input may be obtained by removing the strap from pins
3
and 4 and then strapping pins 1 and 4 and pins 3 and 6
(see Figure 8).
I
Direct - Coupled
Isolated linesof 150or"600ohms up
to level of +15 dBm (with
15095A Line Transformer)
For low
- impedance line -
bridging input or 15K ohrn
line
- matching input (with
15335A Line Transformer)
Output Connections
For unbalanced high-imped-
ance sources
For bridging unbalanced
low
- impedance lines having
signal voltages of 0.8V rms
or higher
Output transformer taps provide connections for 4
- ohm,
8
- ohm and 16 - ohm speakers, plus a 70.7 - volt speaker distri -
bution system (see Figure 6). For 25 - volt speaker distribu -
tion systems, use the 8.ohrn tap. Connect to the terminal
of desired impedance and terminal 5 (common). Terminal
functions and designations are listed in Table II. If stray
electrostatic radiation causes interference, strap terminal 5
(common) to terminal 6 (ground).
CAUTION
frayed wire strands short circuit one
Table
II. Soeaker Outouts
I TB2 - 2 1 16 ohms (40V)speaker systems
I
Terminal
8 ohms (28V) speaker systems. May be used
for 25V speaker distribution systems.
Function
1M95A 15335A
LINE TWNIIORMER
BRIDGING AND MTCHING TRANSFORMER
I 'Factorv wirina at receotacle J1 is for 600 ohms
I
TB2-1
Figure 8. Socket Wiring for Transformer - IsolatedInput
Using 15095A Line Transformer
70.7V (50 ohms) speaker distribution systems

Speaker Matching
Use the output tap most nearly equal to total speaker
impedance. If the load impedance falls between two out
-
put terminal values, use the terminal of lower impedance.
Speaker Power Distribution
Totalpower distributed to all speakers should be notgreater
than the power rating of the amplifier system. The 70.7V
distribution outlet permits connection toa large number of
speakers, each speaker operating at its required powt!r level.
Computing impedance
is not necessary for this application.
Each speaker is equipped with a line transformer having
various power taps. Select the tap which yields the power
desired for that speaker.
OPERATION
ADJUSTMENT OF POWER DRIVER BALANCE
CONTROL
The Power Driver Balance Control (R116 on Power Driver
PCB), balances the outputs of transistors 0104 and 0105
on the PCB. If this control is not adjusted properly, high-
frequency distortion results. If adjustment is indicated, use
the following procedure:
Step 1. Connect a16
- ohm dummy load across terminals
2 (16 ohms) and 5 (common) of TB2 (see
Figure 121.
Step 2. Apply a 20 kHz sine wave to terminals 1 and 2
of the INPUT terminal board (TBlI.
Step 3. Adjust VOLUME control for 100 - watt output
(40volts).
CONTROLS ANDINDICATORS Step 4. Connect a frequency distortion analyzer (pre
Two operating controls are on the front pane1:a VOLUME ferred) or an oscilloscope to terminals 2 and 5
control and a primary power ON
- OFF switch. A pilot indi- of TB2 (16
- ohm speaker output) and observe
cator is lit when the power is ON. output.
HIGHPASSFlLTER
A two.section highpass filter is provided with the 15948 to
protect driver loudspeakers from excessive low
- frequency
power demands. Filter use is indicated when high power
output from the amplifier is applied todriver loudspeakers
not equipped with protective crossover networks. The
3 dB frequency of the highpass filter is 400
Hz (see
Figure 2).
A screwdriver - operated FILTER IN - OUT switch is located
on the rear of the chassis (see Figure 6). The switch is
placed in the OUT position when the 15948 is ;hipped
from the factory.
SERVICE
If a malfunction occurs, service should be performed by an
ALTEC Qualified Service Representative. For factory ser
-
vice, ship the 15940 prepaid toCustomer Service. ALTEC,
1515SouthManchester Avenue. Anaheim, California 92803.
For additional information or technical assistance. call
(714) 774 - 2900, or TWX 910 - 591 - 1142.
Main chassis component locations are shown in Figures 10
and 11, The 15948schematic is shown in Figure 12. Com
-
ponent locations on the power driver PCB are shown in
Figure 13.
ACCESS
Remove the four screws securing the front panel, then
open and lower the hinged front panel to gain access to the
chassis interior.
If the ALTEC 42526 Shelf Mount Cover accessory is in
-
stalled, remove by reversing the steps of the cover installa -
tionprocedure given in the associated instructions.
Step 5. Remove four screws securing front panel, then
open and lower panel.
Step 6. Adjust R116 on Power Driver PCB (see Figures
5 and 12)until minimum distortion is observed
on distortion measuring instrument.
Step 7. Close front panel and secure with four screws
previously removed.
ADJUSTMENT OF OUTPUT
"Q" BALANCE CONTROLS
Output
"a" Balance Controls R136 and R137 on Power
Driver PCB (see Figure 5) balance the bias current of power
transistors 01, 02. Q3 and 04. Inadequate adjustment of
these controls may result in distortion and excessive current
drain from one or more power transistors. If adjustment is
indicated (such as replacement of one or more power tran
-
sistors), use the following recommended procedure:
Step 1. Turn VOLUME control fully counterclockwise
(01.
Step 2. Remove four screws securing front panel, then
lower panel for access to interior.
CAUTION
the chassis
is opened for service. This
procedure should be referred to a quali
-
Step 3. Turn Output
"a" Balance Controls R136 and
R137 fully clockwise (see Figure
5).
Step 4. Turn on power and allow a 5
- minute warmup
period.

Step 5. Adjust R136 and R137 by one of the following
methods [method (a)
is preferred] :
(a) Locate wire attached to terminal 1 of
output transformer T2. Connect
a clamp.
on milliammeter to this wire and adjust
R136 counterclockwise for a
"a" cur -
rent of 40 mA. Change connection of
milliammeter to wire attached to terminal
3 of output transformer T2 and adjust
R137 for a
" Q " current of 40 mA.
(bl Remove two screws securingPower Driver
PCB to chassis and lower PCB on hinged
connector. Connect a millivoltmeter
across resistor R7 (see Figure lo), starling
with highest scale to protect meter. Ad -
just R136 for meter reading of 13 mV.
Change connection of millivoltmeter to
read across resistor R8 and adjust R137
for meter reading of 13 mV. Remove
millivoltmeter and secure PCB to chassis
with two screws previously removed.
Step 6. Close front panel and secure with four screws
removed in Step 2.
ASSEMBLY REPLACEMENTS
Fuses
Step
4.
Carefully insert new or repaired power driver
PCB into connector. Do not warp, bend or twist
the board or conductor may fracture.
Step
5.
Secure PCB with two screws removed in Step 2.
Step 6. Perform ADJUSTMENT OF POWER DRIVER
BALANCE CONTROL procedure.
RECOMMENDED SERVICE TECHNIQUES
If systematic troubleshooting shows need for parts replace
-
ment, observe the following precautions.
Transistor Orientation
Solid
- state components are packaged in various case sizes
and types with various lead orientations (see Figure
9). Be -
fore removing a solid - state component from tie points or
from
a PCB, sketch the lead orientation with respect to the
tie points or PCB.
Form the leads of the new component to conform with the
leads of the part being replaced to aid in making proper
connections. Before removing small transistors, note posi
-
tion of index tab with respect to the PCB or socket. Cut
the leads of the new transistor to the required length and
insert them, properly indexed, into the PCB or socket.
ReplacingPower Transistors
The ac primary power fuse
is mounted on the front panel
(see cover photo). The battery power fuse is located on the
rear of the chassis (see Figure 6). Iffuse replacement
is re -
quired, determine and correct any cause of failure before re -
plac~ngfuse. Install an identical fuse (see PARTS LIST) by
unscrewing fuse holder, replacing fuse and resecuring fuse
holder.
Pilot Lamp
The pilot lamp
is located on the front panel (see cover
photo). If replacement
is required, unscrew the red pilot
lamp shield to expose the bulb. Press bulb inward and tLlrn
~~~nter~lo~k~ise (CCW) to remove. Install an identical bulb
(see PARTS LIST), then replace red pilot - lamp shield.
Power Driver PCB
If the amplifier fails because of
a faulty power driver PCB.
operation may be restored by replacing the PCB with
a new
or repairedPCB. Use the followingprocedure.
Step 1. Remove four screws securing front panel. Open
and lowerpanel for access toPCB
(see Figure 5).
Step 2.
Remove two screws securing PCB to chassis
brackets.
Step 3. Lower hinged connector of PCB and carefully
remove PCB from connector.
Verify the following conditions exist when replacing
power transistors.
1. Mica insulator is not damaged. If damaged, use new
insulator.
2.
No grit or metal particles are between transistor and
heat sink.
3. Both sides of mica insulator are covered with silicone
grease or fluid.
4. Mounting screws are tight,
TestingTransistors
Transistors should be checked with
a transistor tester. If a
tester
is not available, use the following procedure for test -
ing transistorswith an ohmmeter.
Step 1. Remove suspected transistor from circuit (see
ReplacingPCB Components).
Step
2.
Connect ohmmeter leads to base and emitter.
Read on lowest ohms scale. Reverse leads and
read again. Normal readings should be
at least
10 times greater in one direction than in the
other.
Step 3. Connect ohmmeter leads to base and collector.
Ohmmeter readings should be similar to those
obtained inStep
2.

Step 4. If Steps 2 and 3 show normal function, connect
ohmmeter leads to collector and emitter. Read
on lowest ohms scale. Reverse leads and read
again. If reading is low and virtually unchanged
when ohmmeter leads are reversed,the transistor
has ashort circuit between collector and emitter.
Replacing PCB Components
Before removingPCB components for testingor replacement,
read and perform the following instructions.
1. Solid - state components and PCB's may be damaged
by excessive heat. Use a small soldering iron with
a
118.inch diameter chisel tip and use small - diameter
60140rosin - cored solder.
2. Remove components by placing soldering iron on
component lead on conductor side of PCB and pull
out lead. Avoid overheating the conductor.
CAU I ION
surface plated with solder and laminated
to the board. Too much pressure or over
-
heating may lift the conductor from the
P>n 1 - Base
70-66
Mtg Flange. Ccillector
Lead 1 - Emitter
TO - 5 Lead 2 -Base
Lead 3 -Collector P Case*
3.
If component is faulty or damaged, clip leads close to
component and thenunsolder leads from board. With
-
draw leads from component side.
4.
Clear solder from circuit board holes before inserting
leads of new component. Heat solder remaining in
hole, remove iron and quickly insert a pointed non
-
metallic object, such as a toothpick, from conductor
side.
5. Shape new component leads and clip to proper
length. Lead shape should provide stress relief for
component. Insert leads in holes, observing same
polarity or orientation of removed component. Apply
heat and solder on conductor side.
Repairing Fracturedor Damaged PCB Conductor
If a conductor is fractured, damaged or lifted from the cir
-
cuit board, a recommended method of repair is to solder a
section ofgood conductingwire along the damaged area and
then seal with epoxy.
,-----., Leod E - Emitter
. .. )
Lead C - Collector
0 \\! C B: Lead 5 - Bose
.__c'
Lead E - Emitter
Leod C - Collector
'Not all types. Some have bose.
to-cose internally: others hove
no connection to cose.
Figure 9. Typical Solid.State Component Configurations

POWER DRIVE? PCB ASSEI'.'BLY (Al!
?I
- . -
I'! :I; I 3 I \ ,ti I i.1 I >?
IN LOWERED POSITION 11 3
Figure 10. Component Locations Inside Main Chassis
T 1 VOLTAGE Qb Q 5
TBI
RATING
PLATE
SINK
Figure 11. Component Locations on Rear of Chassis

Reference Ordering
Designator Number
27
- 01 - 042843 - 04
+
PARTS
Name and
PCB Assembly, Power
Driver
Cap., 0.01 pF+20%.
1 oov
Cap.. 7000 pF, 40V
Cap.. 0.05 p~ +lo%,
400V
Cap.. 0.1 p~, ~OOV
Cap.. 1 p~, 25v
Cap., 220 pF +lo%,
1 oov
Cap.. 0.002pF +20%,
I oov
Cap., 5 pF, 25V
Cap., 0.47 pF21
0'%,
1 oov
Cap.. 0.005 pF+20%,
1 oov
Cap., 0.0033 pF
220%. 1 oov
Diode. 1N4004,
selected
Diode, Zener, ZOA,
20v 25%
Diode, Zener. 15A.
15v +5%
Diode, rectifier,
1N3492. 18A. 100V
PIV
Diode, 1N456A. 25V.
100 mA
Fuse. 3A. SLO - BLO
Fuse, 10A. 3AG
Socket. octa!
Receptacle, 15 - pin
(for Al)
Cord, 18GA, 3-
conductor. wlplug
Reference Ordering Name and
Designator Number Description
115W. 90V, selected
RlOl
Transistor, 2N5305,
selected
Transistor, 2N2712,
selected
Transistor, 2N3906.
selected
Transistor, 2N5308,
low noise, selected
47
- 01 - 102169 - 01 Res.. 3.3Ka210%.
I l14W
48 - 03 - 107447 - 02
47-06-042509.01
47-01-100635.01
47 - 02 - 105885 - 01
47-01-100652-01
47-02-114449-01
47 - 01 - 102054 - 01
47
- 01.102057 - 01
47-02-112166.01
47.01.102551.01
47-02-100715-01
47 - 02 - 100712.01
47
- 01 - 102376 - 01
47
- 01.100479 - 01
-
47 - 01.102190 - 01
47
- 01 - 102171 - 01
47
- 01 - 102168 - 01
47
- 01 - 102167 - 01
47
- 01 - 100477 - 01 Res.. 470Ka+10%.
1 II~W
Transistor. 2N5320,
low, 75v
Pot., 15Ka220%
Res., 22a210%. lW
Res., 0.50210%. 5W
Res.. 1.8Ka+10%, 1W
Res.. 10a, 5W. NI
Res.. 100a+5%. 114W
Res.. 1300+5%, 114W
Res., 5a+10%, 5W. Nl
Res.,470L?,210%, 1W
Res., 2000210%. 5W
Res., 470+10%, 5W
Res., 56K0+10%,
112W
Res., 680KQ210%,
114W
Res., 180Ka210%.
114W
Res., 4.7Ka210%,
114W
Res..2.7Ka+10%.
114w
Res.. 2.2Ka -210%.
114W
Res., 10K025%.
114W
Res., 1OOKa+lo%,
1 /4W

Reference
Designator
R113
Rll4
R115.117
R116
R118.119
R120.123
R121.122
R124.125
R126.127
R128
R129,132
R130.133
-
Order~ng
-
Number
47 11
- 102177 - 01
PARTS LIST (continued)
7,
Reference Ordering
Description
Name and I Designator 1 Number
Res., 15KC?,+10%,
I 1.134 1 47-01-102147.01
1 /4W
Res.. 1.8Kn+109b, I 1~135 1 47 - 01 - 102155.01
114W
Res., 1Ka+10%,
114W
Res., 33Rz.L +,,
114W
Pot., 10a, 22W
Res.. 330Q210%.
1W
Res., 27Q+10%,
li4W
Res., 47Q+10%,
1/2W
Res.. 180a+lo%,
112W
R136,137
R138.133 .
Res., 56a+10%,
114W
47-05$y697-01
F.ar*?-'>
' ii ,
'47-01-102355-01
Res., 3.3K.Q+5%,
1/4W
Res.. 22Ka+10%, 21 - 04 - 101034 - 01
1 IITB4 I
Name and
Description
-
Res., 47Q f 10%.
1/4W
Res., 220.Q ?lo%.
114W
Pot., 50n20%,
2W"? %~y.t%. . .. ', ?%%
' .( ;..
Rer.. 1KCZFIOI, --.
112W
Switch, DPDT, slide
Switch, toggle, 125V ac,
3A
- 20V dc, 5A
Transformer. power
Transformer, output
Transformer, output
Terminal board,
4.terminal
Terminai board.
6
- terminal
Terminal board,
5.terminal
Terminal board,
2.terrninal