SERVICE MANUAL
Product Type: |
Projection/Directview CTV |
Chassis: |
GM |
Manual Series: CM-150 and PV-150 |
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Manual Part #: |
923-3364R1 |
Model Line: |
A |
Product Year: |
1998 |
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REVISED EDITION
This revised edition includes the original GM manual (923-03364) and the first addendum (923-03419).
Model Series:
A50M84D IQA36M46W A50M84W IQA36M46W4 A50M84W1 IQA56M98D A50M84W5 IQA56M98W A50M84W9 IQA56M98W1 A50M91D IQA56M98W5 A50M91W IQA56M98W9 A50M91W1 IQA60M98D A50M91W5 IQA60M98W A50M91W9 IQA60M98W1 A56M91D IQA60M98W5 A56M91W IQA60M98W9 A56M91W1 RA46M84D A56M91W5 RA46M84D1 A56M91W9 RA46M84D9 A60M91D RA46M84W A60M91W RA46M84W9 A60M91W1 RA50M84D1 A60M91W5 RA50M84D9 A60M91W9 RA50M84W IQA32M46W RA50M84W1 IQA32M46W4 RA50M84W5 IQA32M46W7 RA50M84W9 IQA32M46W74 RA56M91D IQA36M46D RA56M91D9
CONTENTS |
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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
PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS
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 transported 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 components, 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.
A.C. Voltmeter
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0.15uF |
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Good Earth Ground |
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Place this probe |
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on each exposed |
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such as the Water |
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1500 OHM |
metal part. |
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Pipe, Conduit, etc. |
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10 WATT
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.Walland 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.
CM151 |
i |
GM - SAFETY |
PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS
HV SHUTDOW N FOR DIRECT VIEW
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 |
HV (max @ 0 |
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@ 0 beam kV) |
beam kV) |
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135 |
32.0 |
33.0 |
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GM Direct View CRT Protection Circuit Diagram
15VSW
3A6 |
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1K |
QX3408 |
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740V 250V |
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normal |
20V |
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4.7uF |
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15VSB |
390K |
56K |
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8 |
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15VSB |
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+ - |
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shut down |
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Q3410 |
15V Ref |
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G1 |
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470 |
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-250V |
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PW R CTRL |
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1.8K |
330K |
1K |
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to ICX3401-15 |
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2.2M |
130K |
3B5 |
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12VSW |
10K |
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1 |
4 |
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CR3212 |
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CR3210 |
6.3VAC Fil |
8 |
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Fil. Gnd |
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CR3405 |
ICX3405 |
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1K |
1K |
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G1 |
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1 |
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Q3202 |
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3 |
To ICX3401-14 |
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+ |
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Gnd |
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2 |
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1K |
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SW On |
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4.7uF |
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Blank |
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From Small Signal |
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- 15K |
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15VSW |
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PwrCntrl |
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Module |
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1K |
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nc |
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15VSW |
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G1SK |
250V |
1 |
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-5V |
15VSW |
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CR3006 |
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1K |
CR3014 |
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Blank |
To Video Output |
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8.56K |
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with |
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CR3005 |
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Modules |
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scan |
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10K |
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L = normal |
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10K |
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Q3001 |
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CR3003 |
CR3016 |
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0.47uF |
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10K |
H = shut down |
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1K |
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50VPSW |
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Q3000 |
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8.56K |
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15VSW |
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CR3004 |
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2V |
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CR3012 |
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VSense |
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with |
51K |
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scan |
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CRX3012 |
1K |
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10uF |
CR3002 |
Q3002 |
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100 |
10K |
10K |
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CRX3010 |
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+ |
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30V |
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H Drive |
DR SC |
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+ |
10K |
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5.6K |
10 |
CRX3008 |
1K |
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CR3001 |
10uF |
1M |
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1uF |
2K |
100uF |
8 |
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CDisable |
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L = normal |
Daughter Module |
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CRX3009 |
1K |
(not used GZ/GM) |
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9 |
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H = fail |
A - 17821 - XX |
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IC3200 |
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9.1V |
ABL SW |
0V = normal |
12V = fail |
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Ref |
9.76K 110K |
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ii
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 described 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.
iii
TABLE OF CONTENTS
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 |
TOC |
GM CHASSIS |
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 |
1-1 |
GM CHASSIS |
MBR3457 REMOTE CONTROL - KEYS DEFINED
Indicator Light
PRG (Program)
Programs remote to operate other products.
SURF
FLASBK (Flashback)
Returns to previous channel
SURF
Activates TV channel "Surf" feature.
CHANNEL (Up or Down)
Selects next channel When "Surf" option is On, you receive only channels set as "Surf" channels.
ENTER
Shows Channel/Time display. Press after channel numbers for fast selection.
MENU |
GUIDE |
Displays on-screen menus for TV mode.
A |
B |
C |
C C |
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A, B, C, KEYS
Special features on some TV's.
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.
Remote Control Part Number
124-212-37
POW ER
Turn TV On or Off
TV
Selects TV operation
MUTE
Turns sound Off and On
While picture remains.
VOLUME Left/Right
Changes TV's sound level.
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.
CC (Closed Captioning) Displays closed caption menu
TV/VCR - Source
Switches between watching TV via the available sources,
ANTENNA/CABLE, VIDEO IN, etc.
CM150/PV150 |
1-2 |
GM CHASSIS |
TRK4000 REMOTE CONTROL - KEYS DEFINED
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.
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power |
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vcr |
cable |
aux 1 |
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mode
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mute |
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flshbk |
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surf |
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SOURCE |
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Push to switch between |
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available sources connected to |
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your Entertainment Machine. |
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source |
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MENU |
menu |
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Displays functions on VCR |
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RECORD, PAUSE |
record |
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Control functions on VCR |
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ARROW KEYS |
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Allows user to move through |
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on-screen menu choices. |
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REW , FFD, PLAY, STOP |
rew |
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enter |
pip |
quit/ |
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pause |
play
f.fwd
stop
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.
Remote Control Part Number
124-219-01
CM150/PV150 |
1-3 |
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.
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.)
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
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.
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.
PROGRAMMING THE TRK4000 REMOTE |
TO AUTO FIND A CODE |
1.Select equipment needed to be programmed, turn to page 2 - 5 to find 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.
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 |
1-4 |
GM CHASSIS |
PROGRAMMING CODES MBR3457/TRK4000
PROGRAMMING CODES BY BRAND NAME
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 |
106, 107, 114, 116, 117, 161 |
Electric |
|
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/ |
104, 119, 120, 130, 133, |
Mitsubishi |
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 |
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VCRS
Admiral |
208, 261 |
Adventura |
231 |
Aiwa |
231 |
Akai |
223, 238, 241 |
Audio |
202, 206, 218, 247 |
Dynamics |
|
Bell & Howell |
206, 247 |
Broksonic |
221, 226, 233, 250, 255 |
Canon |
214 |
Citizen |
209 |
Craig |
212 |
Criterion |
239 |
Curtis |
214, 259 |
Mathes |
|
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 |
214, 216, 220 |
Electric |
|
Goldstar |
209, 273 |
Go Video |
256, 262, 263, 275 |
Hitachi |
215, 231, 257 |
Instant |
214, 227 |
Replay |
|
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 |
208, 214, 216, 219, 231, 249 |
Ward |
|
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
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Hitachi TV/VCR |
154 |
LXI |
154 |
RCA |
179 |
Samsung |
180 |
Sansui |
182 |
Sharp |
179 |
Sylvania |
154 |
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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 |
305, 306 |
Instrument |
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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 |
316, 323, 336, 364 |
Atlanta |
|
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 |
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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 |
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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/ |
456 |
Kardon |
|
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 |
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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 |
CM150/PV150 |
1-5 |
GM CHASSIS |
CM150/PV150 |
1-6 |
GM CHASSIS |
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).
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A-18728-04 |
1.30 |
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EPROM |
Software |
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Part Number |
version |
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09 Horz Pos |
12 |
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Menu |
Item Current Setting |
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02/05/97 |
TE = 10110000 |
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version |
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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.
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 = 18 jack, 2 = 21 jack. 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.
CM150/PV150 |
2-1 |
GM CHASSIS |
SERVICE MENU
GM Service Menu A-18728-03 Ver. 1.30
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INTEQ |
INTEQ |
AVI |
AVI |
INTEQ |
|
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32V DV |
36V DV |
‘84 PV |
‘91 PV |
‘98 PV |
|
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3D comb 4x5W |
3D comb 4x5W |
2H Comb 2x5W |
2H Comb 4x5W |
3D comb 4x5W |
0 |
Factory Mode |
1 |
1 |
1 |
1 |
1 |
1 |
Preset Preset |
N/A |
N/A |
N/A |
N/A |
N/A |
2 |
Theater Preset |
N/A |
N/A |
N/A |
N/A |
N/A |
3 |
Game Preset |
N/A |
N/A |
N/A |
N/A |
N/A |
4 |
Sports Preset |
N/A |
N/A |
N/A |
N/A |
N/A |
5 |
Daylight Preset |
N/A |
N/A |
N/A |
N/A |
N/A |
6 |
Weak Signal Preset |
N/A |
N/A |
N/A |
N/A |
N/A |
7 |
Vert OSD Position |
15 |
15 |
15 |
15 |
15 |
8 |
Horz OSD Position |
44 |
44 |
44 |
44 |
44 |
9 |
Keyboard Defeat |
0 |
0 |
0 |
0 |
0 |
10 |
Channel Lock |
0 |
0 |
0 |
0 |
0 |
11 |
Minimum Volume |
0 |
0 |
0 |
0 |
0 |
12 |
Maximum Volume |
63 |
63 |
63 |
63 |
63 |
13 |
AC Power On |
0 |
0 |
0 |
0 |
0 |
14 |
A/V Lockout |
0 |
0 |
0 |
0 |
0 |
15 |
Feature Level |
2 |
2 |
0 |
1 |
2 |
16 |
Band/AFC |
0 |
0 |
0 |
0 |
0 |
17 |
Projection Mode |
0 |
0 |
1 |
1 |
1 |
18 |
Horz Gemstar Pos |
0 |
0 |
0 |
0 |
0 |
19 |
Vert Gemstar Pos |
0 |
0 |
0 |
0 |
0 |
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 |
3 |
3 |
3 |
3 |
3 |
54 |
Preset Black Stretcher |
3 |
3 |
3 |
3 |
3 |
55 |
Theater Black Stretcher |
3 |
3 |
3 |
3 |
3 |
56 |
Game Black Stretcher |
3 |
3 |
3 |
3 |
3 |
agmchas/p1 |
2-2 |
SERVICE MENU
GM Service Menu A-18728-03 Ver. 1.30 (continued)
|
|
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 |
3 |
3 |
3 |
3 |
3 |
59 |
Weak Sig Black Stretcher |
3 |
3 |
3 |
3 |
3 |
60 |
Black Level Priority |
0 |
0 |
0 |
0 |
0 |
61 |
Color Decode Phase/Gain |
169 |
169 |
169 |
169 |
169 |
62 |
OSD Control |
0 |
0 |
0 |
0 |
0 |
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 |
0 |
0 |
0 |
0 |
0 |
67 |
Dynamic ABL Point Gain |
2 |
2 |
2 |
2 |
2 |
68 |
ABL Point/Gain |
56 |
56 |
56 |
56 |
56 |
69 |
Horz Video Position |
22 |
22 |
16 |
16 |
16 |
70 |
Vert Freq (Auto/60Hz) |
2 |
2 |
2 |
2 |
2 |
71 |
TOF Freq/Q |
0 |
0 |
0 |
0 |
0 |
72 |
PIP Horz Position |
128 |
128 |
112 |
112 |
112 |
73 |
Input Level |
6 |
6 |
6 |
6 |
6 |
74 * |
VCO Adjust |
31 |
31 |
31 |
31 |
31 |
75 * |
SAP VCO (Always 0) |
0 |
0 |
0 |
0 |
0 |
76 * |
SAP LPF (Always 0) |
0 |
0 |
0 |
0 |
0 |
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 |
0 |
0 |
0 |
0 |
0 |
* These settings must match the bar code label on top of the 9-1789 module.
CM150/PV150 |
2-3 |
GM CHASSIS |
SERVICING - SMALL SIGNAL MODULE REPLACEMENT
SMALL SIGNAL (MAIN) MODULE REPLACEMENT AND TOUCHUP CONVERGENCE
IMPORTANT ! All convergence data is stored in
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
Replacing Small
Signal Module
Dead Set
Transfer IC6002 from original Module
Record convergence values to worksheet
Proceed with minor convergence
Set has OSD Display
Record convergence values to worksheet
Install convergence values or transfer IC6002 to new Module
Proceed with minor convergence
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 reinstall 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 adjustment 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 1 on 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 adjustments 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 horizontal 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.
agmchas/p1 |
2-4 |
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 |
06 |
19 |
06 |
07 18 |
61 34 |
0370v |
74 75 76 77 78 79 80
SERVICE MENU ITEMS
CM150/PV150 |
2-5 |
GM CHASSIS |