Zenith CM-150 Series User manual

SERVICE MANUAL
Product Type: Projection/Directview CTV
Chassis: GM
Manual Series: CM-150 and PV-150
Manual Part #: 923-3364R1
Model Line: A
Product Year: 1998
General Info/Remotes .................................... 1
Service Menus ............................................... 2
Troublshooting/Adjustments .......................... 3
Model Parts List ............................................ 4
Mechanical Drawings ...................................... 5
Schematics and PCB Layouts ........................... 6
Published by Technical Publications
Zenith Electronics Corporation
201 James Record Road - Huntsville, Alabama 35824-1513
ÓCopyright February 1999 by Zenith Electronics Corporation
Revised Edition August 1999
Printed in U.S.A.
ZEN REV2 600
Model Series:
CONTENTS
A50M84D
A50M84W
A50M84W1
A50M84W5
A50M84W9
A50M91D
A50M91W
A50M91W1
A50M91W5
A50M91W9
A56M91D
A56M91W
A56M91W1
A56M91W5
A56M91W9
A60M91D
A60M91W
A60M91W1
A60M91W5
A60M91W9
IQA32M46W
IQA32M46W4
IQA32M46W7
IQA32M46W74
IQA36M46D
IQA36M46W
IQA36M46W4
IQA56M98D
IQA56M98W
IQA56M98W1
IQA56M98W5
IQA56M98W9
IQA60M98D
IQA60M98W
IQA60M98W1
IQA60M98W5
IQA60M98W9
RA46M84D
RA46M84D1
RA46M84D9
RA46M84W
RA46M84W9
RA50M84D1
RA50M84D9
RA50M84W
RA50M84W1
RA50M84W5
RA50M84W9
RA56M91D
RA56M91D9
REVISED EDITION
This revised edition includes the original GM manual
(923-03364) and the first addendum (923-03419).

PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS
i
IMPORTANT SAFETY NOTICE
This manual was prepared for use only by properly trained audio-visual service
technicians.
When servicing this product, under no circumstances should the original
design be modified or altered without permission from Zenith Electronics
Corporation. All components should be replaced only with types identical to
those in the original circuit and their physical location, wiring and lead dress
must conform to original layout upon completion of repairs.
Special components are also used to prevent x-radiation, shock and fire hazard.
These components are indicated by the letter “x” included in their component
designators and are required to maintain safe performance. No deviations are
allowed without prior approval by Zenith Electronics Corporation.
Circuit diagrams may occasionally differ from the actual circuit used. This way,
implementation of the latest safety and performance improvement changes into
the set is not delayed until the new service literature is printed.
CAUTION: Do not attempt to modify this product in any way. Never perform
customized installations without manufacturer’s approval. Unauthorized
modifications will not only void the warranty, but may lead to property damage
or user injury.
Service work should be performed only after you are thoroughly familiar with
these safety checks and servicing guidelines.
GRAPHIC SYMBOLS
The exclamation point within an equilateral triangle is intended
to alert the service personnel to important safety information in
the service literature.
The lightning flash with arrowhead symbol within an equilateral
triangle is intended to alert the service personnel to the presence
of noninsulated “dangerous voltage” that may be of sufficient
magnitude to constitute a risk of electric shock.
The pictorial representation of a fuse and its rating within an
equilateral triangle is intended to convey to the service personnel
the following fuse replacement caution notice:
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE ALL FUSES WITH THE SAME TYPE AND RATING AS MARKED
NEAR EACH FUSE.
SERVICE INFORMATION
While servicing, use an isolation transformer for protection from AC line shock.
After the original service problem has been corrected, make a check of the
following:
FIRE AND SHOCK HAZARD
1. Be sure that all components are positioned to avoid a possibility of
adjacent component shorts. This is especially important on items trans-
ported to and from the repair shop.
2. Verify that all protective devices such as insulators, barriers, covers,
shields, strain reliefs, power supply cords, and other hardware have been
reinstalled per the original design. Be sure that the safety purpose of the
polarized line plug has not been defeated.
3. Soldering must be inspected to discover possible cold solder joints, solder
splashes, or sharp solder points. Be certain to remove all loose foreign
particles.
4. Check for physical evidence of damage or deterioration to parts and compo-
nents, for frayed leads or damaged insulation (including the AC cord), and
replace if necessary.
5. No lead or component should touch a receiving tube or a resistor rated at
1 watt or more. Lead tension around protruding metal surfaces must be
avoided.
6. After re-assembly of the set, always perform an AC leakage test on all exposed
metallic parts of the cabinet (the channel selector knobs, antenna terminals,
handle and screws) to be sure that set is safe to operate without danger of
electrical shock. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS
TEST. Use an AC voltmeter having 5000 ohms per volt or more sensitivity in
the following manner: Connect a 1500 ohm, 10 watt resistor, paralleled by
a .15 mfd 150V AC type capacitor between a known good earth ground
water pipe, conduit, etc.) and the exposed metallic parts, one at a time.
Measure the AC voltage across the combination of 1500 ohm resistor and
.15 mfd capacitor. Reverse the AC plug by using a non-polarized adaptor
and repeat AC voltage measurements for each exposed metallic part. Voltage
measured must not exceed 0.75 volts RMS. This corresponds to 0.5 milliamp
AC. Any value exceeding this limit constitutes a potential shock hazard and
must be corrected immediately.
X-RADIATION
1. Be sure procedures and instructions to all service personnel cover the
subject of x-radiation. The only potential source of x-rays in current TV
receivers is the picture tube. However, this tube does not emit x-rays when
the HV is at the factory-specified level. The proper value is given in the
applicable schematic. Operation at higher voltages may cause a failure of
the picture tube or high-voltage supply and, under certain circumstances
may produce radiation in excess of desirable levels.
2. Only factory-specified CRT anode connectors must be used.
3. It is essential that the service personnel have available an accurate and
reliable high-voltage meter.
4. When the high-voltage circuitry is operating properly, there is no possibility
of an x-radiation problem. Every time a color chassis is serviced, the
brightness should be run up and down while monitoring the high voltage
with a meter, to be certain that the high voltage does not exceed the
specified value and that it is regulating correctly.
5. When troubleshooting and making test measurements in a product with a
problem of excessively high voltage, avoid being unnecessarily close to
the picture tube and the high voltage power supply. Do not operate the
product longer than necessary to locate the cause of excessive voltage.
6. Refer to HV, B+, and shutdown adjustment procedures described in the
appropriate schematics and diagrams (where used).
IMPLOSION
1. All direct view picture tubes are equipped with an integral implosion
protection system; take care to avoid damage during installation.
2. Use only the recommended factory replacement tubes.
TIPS ON PROPER INSTALLATION
1. Never install any receiver in a closed-in recess, cubbyhole, or closely
fitting shelf space over, or close to, a heat duct, or in the path of heated
air flow.
2. Avoid conditions of high humidity such as: outdoor patio installations
where dew is a factor, near steam radiators where steam leakage is a factor,
etc.
3. Avoid placement where draperies may obstruct venting. The customer
should also avoid the use of decorative scarves or other coverings that
might obstruct ventilation.
4. Wall- and shelf-mounted installations using a commercial mounting kit
must follow the factory-approved mounting instructions. A product mounted
to a shelf or platform must retain its original feet (or the equivalent
thickness in spacers) to provide adequate air flow across the bottom. Bolts
or screws used for fasteners must not touch any parts or wiring. Perform
leakage tests on customized installations.
5. Caution customers against mounting a product on a sloping shelf or in a
tilted position, unless the receiver is properly secured.
6. A product on a roll-about cart should be stable in its mounting to the cart.
Caution the customer on the hazards of trying to roll a cart with small
casters across thresholds or deep pile carpets.
7. Caution customers against using a cart or stand that has not been listed
by Underwriters Laboratories, Inc. for use with its specific model of
television receiver or generically approved for use with TVs of the same or
larger screen size.
8. Caution customers against using extension cords. Explain that a forest of
extensions, sprouting from a single outlet, can lead to disastrous
consequences to home and family.
A.C. Voltmeter
1500 OHM
10 WATT
Place this probe
on each exposed
metal part.
Good Earth Ground
such as the Water
Pipe, Conduit, etc.
0.15uF
CM151 GM - SAFETY

ii
PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS
THEORY OF OPERATION (SHUTDOW N CIRCUIT)
The HV shutdown circuit appears on sheet 5 of the
schematics for 9-1979. The basic HV shutdown circuit is
illustrated below.
The peak pulse voltage from deflection transformer
TX3204 is rectified by D3205 and C3217. The resulting
37 volts is then divided by RX3015 and RX3019M to
approximately 8.5 volts. It is applied to the
non-inverting input of one of the op-amps in ICX3200
(pin 10). This op-amp is used as a voltage comparitor.
It’s inverting input (pin 9) is held at a reference voltage
of 9.1 volts by the Zener diode ZDX3004 and RX3025.
Any failure in the deflection circuit that would cause
excessively high, High Voltage at the CRT will also cause
an increase in the sampled 37 volts. This increase will
result in an increase in the voltage at the non-inverting
input to op-amp IC3200 (pin 10). When this increased
voltage exceeds its reference 9.1 volts, the op-amp
output goes from low to high. DX3009 provides a
feedback path that holds the non-inverting input high
so that the op-amp stays
latched with its output high until power is removed by
turning the TV off. DX3009 and RX3016M pull pin 2 of
3N2 high (about 12 volts). This is the horizontal drive
signal pin from the video processor in the small signal
module. The video processor turns off horizontal drive
when its output is pulled high.
When the high voltage shutdown circuit is activated,
IC3200 is no longer supplied with 23 volts to its power
input pin (pin 4) because the 23 volt supply comes from
the deflection transformer, which has been shutdown.
QX3410 and QX3411 provide a connection to another
supply at this time.
The shutdown circuit may be tested for operation by
momentarily connecting a 1k ohm resistor in parallel
with RX3015. This will boost the non-inverting input
above 9.1volts and trigger shutdown.
GM Directview HV & B+
Chassis B+ [VDC] HV (nominal
@ 0 beam kV) HV (max @ 0 beam kV)
135 32.0 33.0
HV SHUTDOW N FOR DIRECT VIEW
GM Direct View CRT Protection Circuit Diagram
3A6
Q3410
QX3408
ICX3405
Q3202
Q3001
Q3002
IC3200
CRX3008
CRX3009
H Drive DR SC
CDisable
(not used GZ/GM)
1010
9
8
1K
1K
2K
9.76K 110K
5.6K
1uF 100uF
CRX3010
CRX3012
CR3012
1K
Q3000
CR3016
CR3003 1K
10K
CR3004
15VSW
50VPSW
CR3405
10K
470
4
3
2
1
1K
15VSW
15VSB
15V Ref
to ICX3401-15
To ICX3401-14
SW On
1K
PW R CTRL
12VSW
1
8
CR3005
CR3006
8.56K 10K
0.47uF 8.56K 10K
PwrCntrl
15VSW
15VSW
1K Blank
CR3014
CR3212 CR3210
1K 1K
130K
1K 2.2M
56K
1.8K
15VSB
250V
4.7uF
+-
G1SK
4.7uF +
-15K
G1
1K
330K
390K
740V
10K
10K
51K
CR3002
CR3001
10uF
100 +
10uF
+10K 1M
VSense
3B5
1
8
250V
15VSW
Blank
G1
Gnd
6.3VAC Fil
Fil. Gnd
nc
To Video Output
Modules
From Small Signal
Module
Daughter Module
A - 17821 - XX
ABL SW
9.1V
Ref
0V = normal
12V = fail
30V
-5V
with
scan
2V
with
scan
L = normal
H = fail
L = normal
H = shut down
-250V
20V
normal
shut down

iii
PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS
HV SHUTDOW N FOR PROJECTION TV
SERVICE SAFETY NOTES
When servicing chassis, under no circumstance should
the original design be modified or altered without
permission from Zenith Electronics Corporation. All
components should be replaced only with types identical
to those in the original circuit, and their physical
location, wiring, and lead dress must conform to original
layout upon completion of repairs.
Special components are also used to prevent
X-Radiation, shock, and fire hazard. These components
are indicated by the letter “X” included in the item
number. This designates critical components in circuits
which are required to maintain safe performance. No
deviations are allowed without prior approval by the
product compliance and evaluation department.
The circuit diagrams may occasionally differ from the
actual circuit used. This way, implementations of the
latest safety and performance improvement changes into
the set is not delayed until the new service literature is
printed.
B+ AND HIGH VOLTAGE SHUTDOW N CIRCUIT
These sets utilize safety circuits for protection. In case of
a failure involving the seal B+ adjustment, high voltage
adjustment, or high voltage shutdown, follow these
instructions closely. Failure to do so many violate
Federal X-RAY limits. Some sets may use a high voltage
shutdown adjustment potentio in place of fixed
resistors. If it should become necessary to replace one of
these factory controls use only the exact Zenith factory
replacement part number. You must also adjust the
replaced controls to factory specified values (B+ to VDC)
and high voltage adjust to 31.5kV). For the high voltage
shutdown adjustment after replacing the high voltage
shutdown adjustment potentiometer or fixed resistors,
follow the following procedure. A functional test of the
high voltage shutdown circuit must be performed to
check for proper operation if you service these sets in the
shutdown circuitry.
1. Measure the DC voltage across capacitor CX3006. It
should be approximately 7.6VDC. Temporarily
connect a 1K 5% 1/2W resistor across RX3015. High
voltage should shutdown. This checks out the
shutdown circuit operation. Remove the temporary
resistor and recycle the ON/OFF button. A more
elaborate test to determine the actual high voltage
value at which high voltage shutdown will occur can
be made as follows:
Caution: It will normally not be necessary to perform
this test unless the set keeps shutting down
under normal operation, the high voltage
shutdown resistors or adjustment pot had
to be replaced, or the operational test des-
cribed in the previous paragraph was
unsuccessful. It should be recognized that
significantly elevated high voltage will be
produced during this test and adequate care
should be taken to avoid high voltage
arcing.
2. Connect a 40kV high voltage meter in place on one of
the CRTs at the high voltage block. Connect the
negative lead of a 500mA 12 volt power supply, with
a 1K OHM resistor in series, to the junction of RX3438
and RX3439 and the positive lead to ground side of
RX3439.
Turn the set ON and ensure that the brightness and
contrast are set at minimum. Increase the 12 volt
bench supply until shutdown occurs, Shutdown must
occur in the range from 34.3 to 36.5kV, If not,
shutdown occurs, the circuit must be repaired and
the test repeated.
When you have completed all the adjustments and
tests, use a “hot melt glue” gun to permanently seal
the B+, HV and/or shutdown, if any of these controls
had been used, to render them not adjustable. This is
to ensure continued compliance with the Federal TV
X-RAY Standard.
NOTE: Any board which cannot be repaired to pass
the functional test above should be
exchanged.

TABLE OF CONTENTS
CM150/PV150 TOC GM CHASSIS
Section 1
Overview (General Information) . . . . . . . . . . . 1-1
MBR3457 Remote Control (Keys Defined) . . . . . 1-2
TRK400 Remote Control (Keys Defined) . . . . . . 1-3
Programming Remote . . . . . . . . . . . . . . . . . . 1-4
Remote Control Programming Codes. . . . . . . . . 1-5
Section 2
Service Menu . . . . . . . . . . . . . . . . . . . . . . . 2-1
Servicing Small Signal Module Replacement . . . 2-4
Stereo Coefficients . . . . . . . . . . . . . . . . . . . . 2-5
Projo Convergence Setup MBR3457/TRK4000. . . 2-6
Convergence Setup Worksheet. . . . . . . . . . . . . 2-8
Convergence Setup Illustrations . . . . . . . . . . . 2-9
Section 3
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . 3-1
Servicing. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Service Adjustments . . . . . . . . . . . . . . . . . . . 3-7
GM CRT Assembly . . . . . . . . . . . . . . . . . . . . . 3-9
GM Direct View - Small Signal Diagram . . . . . . 3-10
GM Direct View - Large Signal Diagram. . . . . . . 3-11
GM Projo - Small Signal Diagram . . . . . . . . . . . 3-12
GM Projo - Large Signal Diagram . . . . . . . . . . . 3-13
Section 4
Model Parts List . . . . . . . . . . . . . . . . . . . . . 4-1
Section 5
Mechanical Drawings
32/36” Stereo Table Top, Exploded View . . . . . 5-1
Inteq Projection Set, Exploded View . . . . . . . . 5-2
46/50” Projection Set , Exploded View. . . . . . . 5-3
56/60” Projection Set , Exploded View. . . . . . . 5-4
Section 6
Schematics and PCBs
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . 6-1
Interconnect Diagram . . . . . . . . . . . . . . . . . . 6-2
9-1650-02 Single PIP . . . . . . . . . . . . . . . . . . 6-3
9-1650-02 Single PIP PCB Layout . . . . . . . . . . 6-4
9-1689-02 Single PIP . . . . . . . . . . . . . . . . . . 6-5
9-1689 Two Tuner Single PIP . . . . . . . . . . . . . 6-6
9-1689-02 Two Tuner Single PIP PCB Layout . . 6-7
9-1783A IF/Audio . . . . . . . . . . . . . . . . . . . . 6-8
9-1783A IF/Stereo . . . . . . . . . . . . . . . . . . . . 6-9
9-1912/1913/1914 Small Signal Chassis . . . . . 6-10
9-1912/1913/1914 Main Small Signal Carrier . . 6-11
9-1912/1913/1914 Small Signal Audio . . . . . . 6-12
9-1912/1913/1914 Small Signal Chassis . . . . . 6-13
9-1912/1913/1914 Scan Velocity Modulator . . . 6-14
9-1912/1913/1914 Main Small Signal Carrier . . 6-15
9-1920/1922 A/V Switch . . . . . . . . . . . . . . . 6-16
9-1920/1922 A/V Switch & Jackpack . . . . . . . . 6-17
9-1920/1922 A/V Switch . . . . . . . . . . . . . . . 6-18
9-1924 2H Comb Filter . . . . . . . . . . . . . . . . . 6-19
9-1924 Signal Processor . . . . . . . . . . . . . . . . 6-20
9-1924 Video Module PCB Layout . . . . . . . . . . 6-21
9-1925/1927 & 9-2034 3D Comb Filter . . . . . . 6-22
9-1925/1927 & 9-2034 3D Comb Filter . . . . . . 6-23
9-1925/1927 & 9-2034 3D Comb Filter . . . . . . 6-24
9-1925/27 & 9-2034 PCB Layout
3D Comb Filter . . . . . . . . . . . . . . . . . . . . . . 6-25
9-1932 Microcontroller . . . . . . . . . . . . . . . . . 6-26
9-1932 PCB Layout Microcontroller . . . . . . . . . 6-27
9-1934/1935 DV Video Output . . . . . . . . . . . . 6-28
9-1936/1938 Projo Video Output . . . . . . . . . . 6-29
9-1978 Projo Power Supply . . . . . . . . . . . . . . 6-30
9-1978 Projo Power Supply . . . . . . . . . . . . . . 6-31
9-1978 Projo Power Supply . . . . . . . . . . . . . . 6-32
A-17821-05 Projo Supply Daughter Board . . . . 6-33
9-1978 Projo Power Supply PCB Layout . . . . . . 6-34
9-1916/79 Direct View Switch Mode
Power Supply . . . . . . . . . . . . . . . . . . . . . . . 6-35
9-1916/1979 Direct View Deflection. . . . . . . . 6-36
A-18347 Two Tuner Antennas Switch . . . . . . . 6-37
Voltage Waveforms . . . . . . . . . . . . . . . . . . . . 6-38

CM150/PV150 1-1 GM CHASSIS
OVERVIEW
GENERAL INFORMATION
New Video features include a comb filter for processing
incoming signals to provide fine detail images. Auto
skin tone circuitry automatically maintains natural skin
tones. Black level enhancement/white level and peak
white level compression circuitry maintains black/white
contrast ratio and peak luminance level for detail in
both light and dark video areas.
Audio features include SoundRite volume control. This
circuitry automatically compensates for the volume
changes during commercials and limits the audio to a
set volume level.
The BBE feature has been added to most audio systems.
The circuitry adjusts the phase relationships of the low,
mid and high frequencies. The circuit also augments the
higher and lower frequencies.
The BBE system provides a dynamic program-driven
augmentation which combines with the phase
compensation feature to restore the clarity of the
original line sound.
THE GM SERIES CHASSIS CONTAINS 10 MODULES
The 9-1912 (small signal) module and 9-1916 (large
signal) are used in the GM-Direct View 32” set.
The 9-1913 (small signal) and 9-1979 (large signal)
modules are used in the GM-Direct View 36” set.
The 9-1914 (small signal) module is used in the
GM-Projo 84 Series.
The 9-1942 (small signal) modules are only used on
GM-Projo 91 Series.
The 9-1943 (small signal) modules are only used on
GM-Projo 98 Series.
All 9-1978 (large signal) modules are only used in
the GM-Projo sets.
THE GM SERIES CHASSIS FEATURES TW ENTY ONE IC’S.
IC6003 EPROM Memory.
IC6002 ROM is the EAROM Memory.
IC6000 Microprocessor located on the 9-1932
Module.
IC3200 Quad Op Amp IC, controlling Pin Cushion/
Over-voltage protect/ Auto Kine Bias/ and ABL, and
is located on 9-1916 and 9-1979 Modules.
IC2900 Audio/Video switch located on A/V 9-1920/
1922 Module.
IC2401M D/A converter for 3D series 9-1925/27,
9-2034 Modules.
IC2400 Digital Comb filter for 2H series.
IC2400M Digital Comb filter for 3D series 9-1925/
27, 9-2034 Modules.
IC2300 Video Processor
IC2200 Signal Processor and handles Video, Sync
and Sweep Drive Processing on 9-1924 Module.
IC2100 Handles Vertical Sweep.
IC2001 PIP Digital Processor.
IC2000 PIP Analog Processor located on the 9-1650
Module.
IC1201 IF/Detector IC
IC1402 BBE Audio Processor
IC1400 Volume Limiter
IC850 Left and right surround sound output IC,
Located on 9-1912/13/14 Modules.
IC800 Left and right audio out put IC, located on
9-1912/13/14 Modules.
ICX3405 Optoisolator IC and is in the Switch Mode
Power Supply.
ICX3402 Regulator IC and is in Switch Mode Power
Supply 9-1978/1979.
ICX3401 Second Regulator IC Controller in the
Switch Mode Power Supply.

CM150/PV150 1-2 GM CHASSIS
MBR3457 REMOTE CONTROL - KEYS DEFINED
SURF
GUIDE
AC
B
CC
CC (Closed Captioning)
Displays closed caption
menu
PRG (Program)
Programs remote to
operate other products.
FLASBK (Flashback)
Returns to previous
channel
CHANNEL (Up or Down)
Selects next channel
When "Surf" option is On,
you receive only channels
set as "Surf" channels.
TIMER
Displays the Sleep Timer
Menu. Press repeatedly to
set TV shut-off time. Specifies
AM or PM when you set the
clock or use a timer feature.
MENU
Displays on-screen
menus for TV mode.
A, B, C, KEYS
Special features on
some TV's.
Remote Control Part Number
124-212-37
SURF
Activates TV channel
"Surf" feature.
POW ER
Turn TV On or Off
TV
Selects TV operation
MUTE
Turns sound Off and On
While picture remains.
NUMBERS
Selects channels directly
and enter numeric values
for some options.
Up/Down and
Left/Right Arrows
The Up/Down arrows
select options.
The Left/Right arrows
adjust options.
Quit/
Removes on-screen
display from view.
If no display is on,
switches front speaker
surround sound On and
Off for some TVs.
ENTER
Shows Channel/Time
display. Press after
channel numbers for
fast selection.
VOLUME Left/Right
Changes TV's sound
level.
TV/VCR - Source
Switches between watching
TV via the available sources,
ANTENNA/CABLE, VIDEO IN, etc.
Indicator Light

CM150/PV150 1-3 GM CHASSIS
TRK4000 REMOTE CONTROL - KEYS DEFINED
mode
mute
flshbk
source
enter
menu
record
pause
rew
stop
f.fwd
play
1
2
3
4
5
6
7
8
0
9
surf
v
o
l
u
m
e
ch
a
n
n
e
l
power
tv
vcr
cable
aux 1
aux 2
POW ER
Turn your Entertainment Machine
or any other programmed equipment
on or off, depending on mode
TRAKBALL
Click and move the on-screen pointer.
FLSHBK
Return immediately to the last
channel viewed.
CHANNEL UP/DOW N
Scroll through your available
channels.
NUMBER PAD
For direct channel selection
and programming functions.
ENTER
Push to accept menu choices or after
channel numbers for faster transfer.
PIP SNAPSHOT
press to capture and freeze main
picture within large PIP frame. Press
a second time and receive PIP from
another channel or source. Press a
third time to remove PIP.
QUIT
Leaves programming menus and
clears screen of displays, and provides
audio swap.
quit/
pip
INDICATOR LIGHTS
Illuminate to show which
mode remote is in.
MODE LEFT/RIGHT
Adjust which mode remote
is working in.
MUTE
Press once for Soft Mute, again
for Full Mute, and a third time to
return to normal volume.
SURF
Use the regular channel selection or
customized channel Surf lists.
VOLUME LEFT/RIGHT
Increases/descreases sound level.
SOURCE
Push to switch between
available sources connected to
your Entertainment Machine.
MENU
Displays functions on VCR
RECORD, PAUSE
Control functions on VCR
ARROW KEYS
Allows user to move through
on-screen menu choices.
REW , FFD, PLAY, STOP
Controls functions on VCR
Remote Control Part Number
124-219-01

CM150/PV150 1-4 GM CHASSIS
PROGRAMMING THE REMOTES
PROGRAMMING THE MBR3457 REMOTE
If you’re using Zenith products, the remote is already
programmed for the most common codes: TV = 101, VCR
= 201, CABLE = 353, and AUX = 401. For other brands, or
if your remote fails to control your Zenith products,
you’ll have to program the remote.
1. Make sure batteries are installed.
2. Press and hold PRG using a blunt pointed object.
Release PRG after indicator light turns on.
3. Press and release button for product being
programmed.
4. Enter 3-digit product code from Remote Control
Programming Codes in this section.
5. Press and release ENTER to save code.
6. Point remote at product and press POW ER to test
product operation. If it does not turn on, reprogram
remote using a different code.
TO AUTO FIND A CODE
1. Turn On the product you want to operate.
2. Press and hold PRG using a blunt object.
3. Press the key to be programmed: CATV, VCR, AUX, or
TV.
4. Enter “0-0-0,” then press ENTER within two seconds.
5. Point remote at the product.
6. Press and release POW ER repeatedly, about once a
second, until your product turns Off.
7. Press ENTER immediately to save the code.
8. Press POW ER to turn On your product.
9. Test your product. If the remote fails to operate the
functions you use most often, use Auto Find again to
search for a better code. (Auto Find resumes its
search after the last code that was entered and saved
in step 7.)
NOTE: If the indicator light stays on as you press
POWER, Auto Find has tried all of the codes.
If the product you want to control has not
turned off, your remote will not work with
that product.
To cancel Auto Find, press PRG at any time.
PROGRAMMING THE TRK4000 REMOTE
1. Select equipment needed to be programmed, turn to
page2-5tofind the programming code appropriate
for the type and brand of equipment. Make sure the
equipment is turned on.
2. Point the MBR Trakball remote at the piece you’re
programming, press MUTE and FLSHBK at the same
time. Hold until one of the mode indicator LEDs
lights.
3. Use the MODE Right/Left button to select the
appropriate mode for equipment.
4. With the Number Keypad, enter the three digit code
found in step 1 and press ENTER. If the code is
accepted, the mode indicator Led will blink three
times, If it is not accepted, the Led will not blink.
NOTE: The TV and VCR modes will only accept codes
for those types of products. The AUX 1, AUX
2, and Cable modes will accept codes for any
kind of product.
5. Push the POW ER button to turn off the equipment. If
nothing happens, repeat the process from step 1,
and try the next code number.
NOTE: To get out of Programming before you enter
a code, just press the QUIT button on remote.
TO AUTO FIND A CODE
1. Turn on device you want to operate.
2. Press and hold MUTE and FLSHBK until the indicator
light turns on.
3. Press MODE Left/Right until the indicator light is
underneath the device needed to be programmed.
4. With the NUMBER keypad, enter the code 0-0-0
(zero-zero-zero), then press the ENTER key right
away.
5. Aim remote at correct device and push the POW ER
button. Allow a second to pass, then push the Power
button again. Repeat until the device turns off.
6. Push Enter to save the code. The indicator light on
the remote will blink three times and then turn off.
7. Press Power to turn the device back on.
NOTE: You can get out of Auto Find quickly by
pressing the Quit button.
If the indicator light does not turn off while
you push the Power key, all the codes have
been tried and your device can’t be
programmed.

CM150/PV150 1-5 GM CHASSIS
PROGRAMMING CODES MBR3457/TRK4000
TVS
Admiral 116, 121, 130, 133
Adventura TV/VCR 154
Akai 104
Amark 103, 146
AOC 104
Bell & Howell 121
Broksonic 131, 136, 182
Candle 139
Centurion 119
Citizen 121, 139
Contec 141
Coronado 103
Crown 103
Curtis Mathes 116, 119, 121
Daewoo 149, 159
Daewoo TV/VCR 148
Daytron 119
Elektra 121
Emerson 103,104,123,124, 131, 136,
145, 176
Emerson TV/VCR 158
Fisher 109, 118
Funai TV/VCR 154
General
Electric 106, 107, 114, 116, 117, 161
Goldstar 103, 104, 119, 147, 184
Goldstar TV/VCR 153
Hitachi 102, 103, 129, 163, 121
Inteq 101
J.C. Penney 104, 110, 114, 117, 119
JVC 125, 132, 164
KMC 103
KTV 103, 104, 138
Kurazai 121
LG 184
Lodgenet 121
Logik 121
LXI 133, 137
Magnavox 103, 112, 113, 117, 119,
127, 128, 130, 139, 165
Magnavox TV/VCR 173, 181
Majestic 121
Marantz 104, 120, 155
Megatron 146
Memorex 121
MGA/
Mitsubishi 104, 119, 120, 130, 133, 140, 155, 169, 178
Montgomery Ward 103, 104, 105, 113, 114,
119, 121, 130, 133
NEC 104, 119
Orion 176
Panasonic 106, 107, 160, 166
Panasonic TV/VCR 174
Philco 103, 104, 112, 113, 139
Philips 112, 113
Pioneer 135
Portland 103
ProScan 116, 157, 162, 167
Quasar 106, 107
RCA 104, 116, 126,
157,161,162,167,168
Realistic 105, 123, 124
Sampo 119
Samsung 103, 119, 134, 141
Sanyo 108, 109, 118
Scott 119, 124
Sears 103, 108, 109, 110, 111, 118,
134
Sharp 103, 105, 122, 133, 137, 156,
169
Signature 2000 103, 104, 105, 113, 114,
119, 121, 130, 133
Sony 115, 143, 151, 170
Soundesign 139
Sylvania 112, 113, 117, 119, 127, 128,
139
Symphonic TV/VCR 154
Tatung 106
Teknika 103, 112, 121, 124, 139
Telerent 103, 121
Toshiba 110, 111, 134, 171
XR1000 121, 154
Yorx 119
Zenith 101, 142, 149, 177
Zenith Star Sight 175
Zenith TV/VCR 153, 154, 172
VCRS
Admiral 208, 261
Adventura 231
Aiwa 231
Akai 223, 238, 241
Audio
Dynamics 202, 206, 218, 247
Bell & Howell 206, 247
Broksonic 221, 226, 233, 250, 255
Canon 214
Citizen 209
Craig 212
Criterion 239
Curtis
Mathes 214, 259
Daewoo 244, 246, 248, 254
Daytron 236, 246
DBX 202, 218
Emerson 203, 209, 221, 223, 226, 233,
235, 243, 250
Fisher 211, 212, 213, 247
Funai 231
General
Electric 214, 216, 220
Goldstar 209, 273
Go Video 256, 262, 263, 275
Hitachi 215, 231, 257
Instant
Replay 214, 227
Inteq 273
J.C. Penney 214, 215, 218, 227
JVC 202, 224, 225, 258, 263
Kenwood 202
Logik 239
LXI 209, 231
Magnavox 207, 214, 231
Marantz 207, 218
Marta 209
Memorex 206, 212, 214, 231
Mitsubishi 204, 222, 252, 264
Montgomery
Ward 208, 214, 216, 219, 231, 249
Multi Tech 239
NEC 202, 218
Optimus 208, 209, 259
Orion 233, 250
Panasonic 214, 251, 259
Pentax 215
Philco 207, 214
Philips 207, 214, 227
Pioneer 210, 215
Portland 246
Pro Scan 216, 260
Quasar 214, 259
RCA 215, 216, 220, 227, 240, 242,
244, 260
Realistic 206, 208, 212, 214, 231
Samsung 220, 230, 238
Sansui 239
Sanyo 206, 212, 247
Scott 204, 205, 233, 243
Sears 206, 209,211, 212, 215
Sharp 208, 261, 272
Shintom 239
Signature 2000 208, 214, 216, 219, 231, 249,
261
Sony 217, 232, 237, 274
Sylvania 207, 214, 227
Symphonic 231
Tashiko 209
Tatung 202
Teac 202, 231
Teknika 209, 234
Toshiba 205, 215, 271
XR1000 239
Vector Research 204, 218
Yamaha 202, 218
Zenith 201, 224, 225, 229, 237
TV/VCR
Hitachi TV/VCR 154
LXI 154
RCA 179
Samsung 180
Sansui 182
Sharp 179
Sylvania 154
CABLE/SATELLITE Set-Ups
Allegro 358, 362
Allegro A/B Switch 361
Amerkast 383
Dish Network 389
Gemini 305, 331, 338
General Electric 367
General
Instrument 305, 306
Hamlin 302, 303, 345, 365, 366
Jerrold 304, 307, 308, 309, 310, 318,
360, 363
Kale Vision 335
Macom 314, 321
Magnavox 334
NSC 335, 339, 368, 369, 370
Oak 311, 332, 342
Panasonic 313, 320
Paragon 333
Philips 347, 350, 352, 354, 355
Pioneer 315, 343
Primstar 388
Radio Shack 362
RCA DSS 373, 394
Regal 366
Regency 329
Samsung 335
Scientific
Atlanta 316, 323, 336, 364
Sony DSS 387
Sprucer 313
Standard Comp 335
Stargate 379
Texscan 339, 356, 371
Tocom 317, 318, 346
Toshiba DSS 391
Unika 348, 362
United Satellite 344
Universal 358, 362
Vid Tech 340
Video Way 349
Viewstar 354, 355, 372
Zenith 301, 353
Zenith HD Set Top 385
Zenith N/C Set Top 384, 395
Zenith Satellite 312, 328, 330, 351
LASER DISK
Denon 402, 403
Mitsubishi 403
Pioneer 402, 403, 405
Sanyo 401
Sony 404
Zenith 401
AUDIO CD PLAYERS
Akai 409, 424
Carver 510
Crown 410
Denon 411
Fisher 412, 438
Goldstar 460
Harman/ Kardon 413
JVC 415
Kenwood 412, 416, 417, 441
Magnavox 421, 422, 433, 434
AUDIO CD PLAYERS (continued)
Mitsubishi 423, 424
NAD 425, 426, 447
Nakamichi 427, 428
NEC 429
Onkyo 430
Panasonic 431, 432
Philips 421, 433, 434
Pioneer 431, 435
Quasar 432
Radio Shack 431, 436, 439, 440, 441
RCA 437
Sanyo 438, 439
Scott 440
Sharp 441, 442
Sony 443, 444, 445
Soundesign 461, 498, 501, 502
Sylvania 433
Teac 446
Technics 432, 459
Toshiba 447
Yamaha 448
Zenith 460, 461, 498, 501, 502
AUDIO TAPE DECKS
Denon 455
Harman/
Kardon 456
JVC 457
Kenwood 450
Onkyo 458
Philips DCC 454
Pioneer 451, 478
Sony 452
Technics 454, 497
Yamaha 453
AUDIO TUNERS
AND AMPLIFIERS
Denon 462, 463
Fisher 464
Goldstar 460
Harman Kardon 465
JVC 466
Kenwood 468, 469, 506
Marantz 472, 503
Onkyo 473
Philips 475, 476
Pioneer 477, 478, 479
Radio Shack 487, 488
Realistic 480
Sanyo 481
Scott 482
Sharp 483
Sherwood 487, 488
Sony 489, 490, 491, 492
Soundesign 461, 498, 501, 502
Teac 494, 495
Technics 497, 509, 567,
Yamaha 496
Zenith 460, 461, 498, 501, 502,
504, 505
DVD PLAYERS
Denon 523, 524
Marantz 521
Mitsubishi 525
Panasonic 523, 524
Philips/Magnavox 521
Pioneer 527
Proscan 526
RCA 526
Sony 522
Toshiba 521
Zenith 521
PROGRAMMING CODES BY BRAND NAME

CM150/PV150 1-6 GM CHASSIS

CM150/PV150 2-1 GM CHASSIS
SERVICE MENU
GM CHASSIS A-LINE LINE SERVICE SETUP -
DIRECTVIEW AND PROJO
Accessing The Service Menu
You may access the menu by using the keyboard or a
remote control. If you use the keyboard press and hold
the MENU key until the customer menu disappears and
then quickly press the ADJUST RIGHT and CHANNEL
UP keys at the same time. If you use the remote control
press and hold the MENU key until the customer menu
disappears and then quickly press the number keys 9,
8, 7, 6, and ENTER. Following either procedure should
bring you to the Service Menu. The menu will display
one control at a time. Please note that FACTORY MODE
should always be OFF in the field. If FACTORY MODE is
turned ON there will be situations that cause customer
menu settings to randomly change just by turning the
set off and then on again. FACTORY MODE can be turned
OFF simply by setting the clock feature in the customer
menu.
Please note color tracking is done by the Video
Processing circuit. There are no manual color controls.
Even if COLOR LEVEL, on the customer menu, is turned
all the way down there will always be some color on
(unless the video signal is black and white with no
color burst).
Audio Coefficients (VCO addition, SAP VCO, SAP LPF,
LPF addition, Spectral, and W ideband) - Settings for
the audio processor’s stereo decode system. Values, for
Service Menu features 74 through 80, are found on a bar
code label on top of the Tuner/IF/Audio module.
A/V Lock - Disables all audio and video inputs - gives
blue screen and menus only.
Band/AFC - Allows setting of tuning band and AFC
mode. Allows manual override of the BAND and AFC
selection of Auto Program.
Note: If Auto Program is run, it will automatically
reset the manual BAND/AFC selection.
Bright AUX and Bright RF - Allows balance of AUX and
RF viewed video brightness levels.
Chan Lock - Locks set to one channel use only.
Feat. Level - 0 =11 jack,1=18jack,2=21jack. Factory
mode must be on to switch the setting. After making the
change be sure to turn off the factory mode feature.
Horz Pos and Vert Pos - Sets horizontal and vertical
position of on screen displays. Does not affect position
of the picture video.
Key Deft - Disables menu use of the keyboard keys:
MENU, ENTER, ADJUST, and SELECT.
Max Vol - Sets maximum volume limit.
Min Vol - Sets minimum volume limit.
Preset PX (also Theater, Game, Sports, Daylight, and
W eak) - Stores special customer video menu setup as six
different presets. To change, enter the customer video
menu and select video pref. feature. Select preset (i.e.
Preset, Theater, Game, etc.) that is to be changed and
customize it. Enter the Service Menus and access the
feature that was just changed (Preset PX, Theater PX,
Game PX etc.) and press adjust to store the change. The
new setup is stored as the new “video controls preset”
for that item.
Proj Mode - When enabled, adds the Projo Setup feature
to the customer setup menu. Enables customer static
setup (red and blue centering offset) display for the
projo TVs.
RGB Brite and RGB Cont - Controls on screen display
video.
Sub Contr - Sets operating range and offset of contrast.
MENU TERMS GLOSSARY
The items listed below are Service Menu items you may
have to adjust for a particular television. Please note
that some of these, if set wrong, may cause symptoms
similar to a circuit failure.
AC Pwr ON - Turns set on when AC line power is
applied. Power key is disabled. Automatically enabled
if factory mode is on.
A-18728-04 1.30
09 Horz Pos 12
02/05/97 TE = 10110000
Software
version
EPROM
Part Number
Menu
Item Current Setting
Software
version
Item
Name

agmchas/p1 2-2
SERVICE MENU
INTEQ INTEQ AVI AVI INTEQ
32V DV 36V DV ‘84 PV ‘91 PV ‘98 PV
3D comb 4x5W 3D comb 4x5W 2H Comb 2x5W 2H Comb 4x5W 3D comb 4x5W
0Factory Mode 11111
1Preset Preset N/A N/A N/A N/A N/A
2Theater Preset N/A N/A N/A N/A N/A
3Game Preset N/A N/A N/A N/A N/A
4Sports Preset N/A N/A N/A N/A N/A
5Daylight Preset N/A N/A N/A N/A N/A
6Weak Signal Preset N/A N/A N/A N/A N/A
7Vert OSD Position 15 15 15 15 15
8Horz OSD Position 44 44 44 44 44
9Keyboard Defeat 00000
10 Channel Lock 00000
11 Minimum Volume 00000
12 Maximum Volume 63 63 63 63 63
13 AC Power On 00000
14 A/V Lockout 00000
15 Feature Level 22012
16 Band/AFC 00000
17 Projection Mode 00111
18 Horz Gemstar Pos 00000
19 Vert Gemstar Pos 00000
20 RGB OSD/PIP Brightness 45 45 45 45 45
21 RGB OSD/PIP Contrast 60 60 50 50 50
22 Base Brightness Rf 76 76 76 76 76
23 Base Brightness Aux 76 76 76 76 76
24 Base Brightness YUV 76 76 76 76 76
25 Sub Contrast Rf 16 16 16 16 16
26 Sub Contrast Aux 16 16 16 16 16
27 Sub Contrast YUV 16 16 16 16 16
28 Sub Color Rf 10 10 10 10 10
29 Sub Color Aux 10 10 10 10 10
30 Sub Color YUV 10 10 10 10 10
31 Low Green/Red Drive 103 103 90 90 90
32 Med Green/Red Drive 117 117 80 80 80
33 High Green/Red Drive 113 113 70 70 70
34 Low Blue Drive 37 37 30 30 30
35 Med Blue Drive 51 51 40 40 40
36 High Blue Drive 57 57 50 50 50
37 Low Red Cutoff 200 200 195 195 195
38 Low Green Cutoff 100 100 230 230 230
39 Low Blue Cutoff 89 89 121 121 121
40 Med Red Cutoff 180 180 175 175 175
41 Med Green Cutoff 100 100 230 230 230
42 Med Blue Cutoff 118 118 141 141 141
43 High Red Cutoff 168 168 165 165 165
44 High Green Cutoff 100 100 230 230 230
45 High Blue Cutoff 144 144 159 159 159
46 Custom Color Setup 10 10 10 10 10
47 Preset Color Setup 10 10 10 10 10
48 Theater Color Setup 14 14 14 14 14
49 Game Color Setup 10 10 10 10 10
50 Sports Color Setup 10 10 10 10 10
51 Daylight Color Setup 10 10 10 10 10
52 Weak Sig Color Setup 10 10 10 10 10
53 Custom Black Stretcher 33333
54 Preset Black Stretcher 33333
55 Theater Black Stretcher 33333
56 Game Black Stretcher 33333
GM Service Menu A-18728-03 Ver. 1.30

CM150/PV150 2-3 GM CHASSIS
SERVICE MENU
INTEQ INTEQ AVI AVI INTEQ
32V DV 36V DV ‘84 PV ‘91 PV ‘98 PV
3D comb 4x5W 3D comb 4x5W 2H Comb 2x5W 2H Comb 4x5W 3D comb 4x5W
57 Sports Black Stretcher 27 27 27 27 27
58 Daylight Black Stretcher 33333
59 Weak Sig Black Stretcher 33333
60 Black Level Priority 00000
61 Color Decode Phase/Gain 169 169 169 169 169
62 OSD Control 00000
63 DVD YUV Tint Offset 63 63 63 63 63
64 Luma Setup 194 194 194 194 194
65 VSM Phase/Gain 70 70 70 70 70
66 DC Restoration 00000
67 Dynamic ABL Point Gain 22222
68 ABL Point/Gain 56 56 56 56 56
69 Horz Video Position 22 22 16 16 16
70 Vert Freq (Auto/60Hz) 22222
71 TOF Freq/Q 00000
72 PIP Horz Position 128 128 112 112 112
73 Input Level 66666
74 * VCO Adjust 31 31 31 31 31
75 * SAP VCO (Always 0) 00000
76 * SAP LPF (Always 0) 00000
77 * LPF Adjust 26 26 26 26 26
78 * Spectral Adjust 35 35 35 35 35
79 * Wideband Adjust 39 39 39 39 39
80 * Bass Boost 00000
* These settings must match the bar code label on top of the 9-1789 module.
GM Service Menu A-18728-03 Ver. 1.30 (continued)

agmchas/p1 2-4
SERVICING - SMALL SIGNAL MODULE REPLACEMENT
SMALL SIGNAL (MAIN) MODULE REPLACEMENT
AND TOUCHUP CONVERGENCE
IMPORTANT!Allconvergence datais storedin
IC6002, the eight pin Serial EEPROM located
on the Micro Module. A complete re-conver-
gence will be required unless this data is
retrieved from the original module either by recording
the convergence values or transferring IC6002 to the
replacement module.
Small Signal Replacement Convergence Procedure
NOTE: If the small signal (Main) Module is the
cause of a Dead Set condition, and IC6002 is
faulty, the replacement module may require
a complete convergence setup.
If set still has on-screen display, use the following
procedure:
1. Remove shield from the Micro Module on the
original Small Signal Module and the replacement
module. Remove IC6002 from original module and
exchange it with IC6002 from the replacement
module. Replace both shields making sure to re-
install IC6002 on DUD Module.
2. Press and hold MENU on remote until User Menu
display disappears. Then press “999" and ENTER.
Set will now be in the Geometry Adjustment Mode; it
is not necessary to save GEOMETRY settings. Press
FLASHBACK to access the Green Convergence Sett -
ings. The left side of the bar describes the adjust-
ment name. The two numbers on the right side of
the bar are the Horizontal and Vertical settings:
Horizontal on the left and Vertical on the right.
Green Convergence Mode Display
3. Start by pressing 1on remote. Write down the
convergence values on the Digital Convergence
Numbers For Rear Projo TV sheet provided. Where
there are more than one set of numbers, press the
number again to see the second set.
4. After all the Green settings have been recorded,
press MUTE to access the Blue settings. Repeat
procedure and record all of the BLUE settings. When
BLUE is finished, press SURF for RED and record all of
the RED settings.
5. When all of the settings have been recorded, press
QUIT to exit the Convergence Mode.
NOTE: REMEMBER - Avoid any mechanical adjust-
ments on the CRTs or adjustment of the
Horizontal and Vertical size controls on the
Power Supply Module, if only replacing the
Main Module.
6. Remove defective module and install replacement
module. Ensure that all connectors are plugged in
securely.
7. Place the set in the Convergence Mode and install all
of the convergence values. Start with Green and
follow with Red, then Blue.
NOTE: To save the convergence values just entered,
press QUIT. “Do You Want To Save The
Changes - YES/NO” will appear. Use the
ADJUST button to select YES or NO, then press
ENTER to save. Do this after each “Green,
Red, Blue” sequence to avoid losing all of
your work should a power interruption occur.
8. If, after installing all of the original values, set still
needs some touchup of the convergence, attach a
crosshatch generator to set and follow the procedure
provided. Use the small Left/Right arrows for hori-
zontal adjustments and the small Up/Down arrows
for vertical adjustments. Pressing ENTER lets you
toggle between the control’s stored setting and the
adjustment just made.
9. Access the Service Menu and enter the Stereo
coefficients as shown on the bar code label on small
signal Module.
Replacing Small
Signal Module
Dead Set
Record convergence
values to worksheet
Proceed with
minor convergence
Transfer IC6002
from original
Module
Record convergence
values to worksheet
Install convergence
values or transfer
IC6002 to new
Module
Proceed with
minor convergence
Set has OSD Display

CM150/PV150 2-5 GM CHASSIS
SERVICE - SMALL SIGNAL MODULE REPLACEMENT (continued)
ENTER THE STEREO COEFFICIENTS
(Bar code data) Will be found on a label attached to the
chassis. Enter these settings in their appropriate
locations in the Service Menu items 74 through 80
(starting with the left-most two digits for item 74)
TYPICAL CHASSIS BAR CODE LABEL
LOCATED ON THE MAIN MODULE
COEFFICIENTS
SERVICE MENU ITEMS
06 19 06 07 18 61 34
74 75 76 77 78 79 80
0370v

agmchas/p1 2-6
PROJO CONVERGENCE SETUP PROCEDURE - MBR3457/TRK4000
2. Set pattern generator display to a hatch or
mono-scope pattern.
3. Adjust brightness and contrast, on the Customer
Video Menu, to lowest level that allows you to view
entire pattern.
4. Adjust mechanical and electrical focus as needed.
Note: The area of interest while doing mechanical
focus is the center of the screen. The areas of
interest while doing electrical focus are mid
points of the display (midway between center
toedgeon thetop,bottom,andbothsides).
Step 4: Customer Convergence Controls
1. Using customer convergence controls, adjust
vertical and horizontal RED and BLUE static
convergence controls to the center of their +/-
range.
Step 5: Setup Yoke Tilt and Center Screen
1. Select cross hair pattern on the generator.
2. Press and hold MENU on remote until customer
menu display disappears. Then press “999 ENTER”.
Geometry convergence display will appear.
3. Press PIP for TRK4000 or FREEZE for MBR remote
to disable convergence. Screen should now say
Geometry MUTE.
To simplify the PTV convergence procedure, a Kit with
a special hand control may be purchased. Refer to the
back page of this Service Manual for more
information.
GM - PROJO CONVERGENCE SETUP PROCEDURE
Step 1: W arm-up TV set for at least 15 minutes.
1. Read entire procedure while set is warming up.
Note: G-2 setup and video mute jumpers are on the
rear left corner of the main module. G-2 and
Focus controls are located inside the back of the
projo behind the blue CRT. Vertical and
horizontal size controls are located on the front
of the power supply/deflection module.
Step 2: G-2 Setup
1. Place G-2 Setup jumper (SW1) to setup position.
2. Set G-2 control for the Green CRT by turning control
clockwise until vertical retrace lines are just visible.
Repeat procedure for red and blue.
Note: Make Sure that there is no direct light on screen
or bright light present while adjusting G-2
controls.
3. Place SW1 to normal position.
Step 3: Focus Adjustment
1. Connect a pattern generator (or VCR with signal
pattern tape part# 892-53) to video inputs on set.
Bow
*Lin / In Lin
*Pin / D Pin
*Size / L Size (Green & Red)
*L Lin / L Edge (Green & Red)
Skew
*Key / D Key
*S-ing / W -M
In Pin
Mid Size
DC Center Exit Setup Mode
Red Convergence Select
Convergence Mute
Green Convergence Select
Blue Convergence Select
*Size / R Size (Blue
*R Lin / R Edge (Blue)
Convergence Function Keys
mode
mute
flshbk
source
enter
menu
record
quit
pause
pip
rew
stop
f.fwd
play
1
2
3
4
5
6
7
8
0
9
surf
v
o
l
u
m
e
ch
a
n
n
e
l
power
tv
vcr
cable
aux 1
aux 2
+/- Vertical
Control
Adjustments
+/- Horizontal
Control
Adjustments
Toggles between new and
stored convergence
Remote Control Part Number
124-219-37
* L Lin/L Edge (Green & Red)
* R Lin/R Edge (Blue)
SURF
GUIDE
THEME
PIP
FREEZ
TO DO
PIP ch
H
Day
Convergence Function Keys
Green Convergence Select
Blue Convergence Select
Bow
* Lin/In Lin
* Pin/D Pin
Exit Setup Mode
Skew
In Pin
Mid Size
DC Center
* Key/D Key
* S-ing/W-M
Red Convergence Select
Convergence Mute
* Size/L Size (Green & Red)
* Size/R Size (Blue)
Remote Control Part Number
124-212-37

CM150/PV150 2-7 GM CHASSIS
PROJO CONVERGENCE SETUP PROCEDURE - MBR3457/TRK4000 (continued)
Note: If you have a monoscope test pattern set
horizontal size to 5 graticule marks (left and
right) and vertical size to 4.0 graticule marks
(top and bottom).
Some remote control keys have two functions.
Press key a second time to toggle to second
function.
Step 7: Converge Red onto Green
1. Enable Red CRT video by removing RED disable
jumper of SW2. Blue CRT should still be disabled.
2. Adjust vertical controls to obtain straight horizontal
lines.
3. Adjust horizontal controls to obtain straight vertical
lines.
4. Adjust L-Lin, L-Edge, L-Size, and Mid-Size to fully
converge the Red image to the Green image .
5. Repeat steps 2-4, as necessary, until best possible
convergence is achieved.
Step 8: Converge Blue onto Green
1. Enable Blue CRT video by removing BLUE disable
jumper of SW2 and disable Red CRT video by
installing RED disable jumper of SW2.
2. Adjust vertical controls to obtain straight horizontal
lines.
3. Adjust horizontal controls to obtain straight vertical
lines.
4. Adjust R-Lin, R-Edge, R-Size, and Mid-Size to fully
converge Blue image to Green image.
5. Repeat steps 2-4, as necessary, until best possible
convergence is achieved.
Step 9: Final Convergence of Red and Blue to
Green
1. Enable Red CRT video and Blue CRT video by
removing RED and BLUE disable jumpers of SW2.
2. Adjust the convergence controls, as necessary, until
best possible convergence is achieved.
Step 10: Save Convergence Adjustments
A question will be displayed, Do You Want To Store Your
Changes - YES/NO, when QUIT is pressed once. Using
ADJUST key, change and high light to YES, and press
ENTER to save. You may also press QUIT twice to exit
the convergence setup mode without saving changes.
4. Locate physical center of display screen.
5. Look at horizontal line and adjust by loosening yoke
clamp and rotating yoke assembly.
6. Using ring magnets set Green CRT beam to center
point of screen.
7. Adjust Red horizontal line to convergence with Green
horizontal line and Red vertical line 3/4" to right of
Green vertical line. Repeat steps 5 and 6 for Blue
horizontal and vertical line.
8. Adjust Blue horizontal line to convergence with
green horizontal line and blue vertical line 3/4" to
left of green vertical line.
9. Press PIP for TRK4000 or FREEZE for MBR remote to
enable convergence. The Geometry MUTE display
should be off.
10. Mute (cutoff) Red and Blue CRT video by placing
jumpers of SW2 (on the main module) to disable
position.
11. Looking at the Green - notice if pattern changed
coordinates. If yes go to step 12. If no go to step 13.
12. Press Menu + FLASHBK on remote. Screen should say
Green DC. Use small arrows on remote to adjust Green
centering.
13. Enable Red CRT video, by removing RED disable jumper
of SW2. Press SURF + Menu for TRK or CC + Menu for
MBR remote to select Red DC and convergence Red to
Green.
14. Enable Blue CRT video, by removing BLUE disable
jumper of SW2. Press MUTE + Menu to select Blue DC
and convergence Blue to Green.
Step 6: Setup Green Reference Color
1. Disable Red and Blue CRT video using the jumpers of
SW2 (on the main module) .
2. Press FLASHBK + 6 on remote. Screen should say
Green Size. Use small arrows on remote to set Horz. &
Vert. size to 127.
3. On the sweep module adjust vertical and horizontal
size controls to about 1.5" of over scan. Display
aspect ratio must be 3 to 4.
4. Adjust vertical controls to obtain straight horizontal
lines.
5. Adjust horizontal controls to obtain straight vertical
lines.
6. Repeat steps 2-5, as necessary, to achieve best
possible display.

CM150/PV150 2-8 GM CHASSIS
CONVERGENCE SETUP W ORKSHEET
Green
Skew
Bow
Lin
Key
Pin
Size
In-Pin
S-ing
L-Lin
Mid-Size
DC Center
Green
N/A
N/A
In-Lin
D-Key
D-Pin
L-Size
N/A
W-M
L-Edge
N/A
N/A
Vert.Horz. Vert.Horz.
FLASHBK
1
2
3
4
5
6
7
8
9
0
MENU
Red
Skew
Bow
Lin
Key
Pin
Size
In-Pin
S-ing
L-Lin
Mid-Size
DC Center
Red
N/A
N/A
In-Lin
D-Key
D-Pin
L-Size
N/A
W-M
L-Edge
N/A
N/A
Vert.
Horz. Vert. Horz.
SURF
1
2
3
4
5
6
7
8
9
0
MENU
Blue
Skew
Bow
Lin
Key
Pin
Size
In-Pin
S-ing
L-Lin
Mid-Size
DC Center
N/A
N/A
In-Lin
D-Key
D-Pin
R-Size
N/A
W-M
R-Edge
N/A
N/A
Vert.
Horz. Vert. Horz.
MUTE
1
2
3
4
5
6
7
8
9
0
MENU
N/A
N/A
N/A
Blue
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A N/A
Use this chart to record the Red, Green, and Blue convergence setting values. You do not
need to copy the "Geometry" settings as they are the result of the red, green, and blue
settings. This chart is useful if you have to change a main module and still have a working
video display.
Check the setup section of this manual for the convergence procedure details.