Zenith A50M91W1, A60M91D, IQA32M46W7, IQA56M98W5, IQA56M98W User Manual

...

SERVICE MANUAL

Model Series:

Product Type: Projection/Directview CTV Chassis: GM Manual Series: CM-150 and PV-150 Manual Part #: 923-3364R1 Model Line: A Product Year: 1998

REVISED EDITION

This revised edition includes the original GM manual (923-03364) and the first addendum (923-03419).

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

Printed in U.S.A. ZEN REV2 600

CONTENTS

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

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

Good Earth Ground such as the Water Pipe, Conduit, etc.

0.15uF

1500 OHM

10 WATT

Place this probe on each exposed metal part.

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.

CM151 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 voltsby the Zenerdiode ZDX3004 andRX3025.

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

GM Direct View CRT Protection Circuit Diagram

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)

135 32.0 33.0

HV (max @ 0 beam kV)

3A6

PW R CTRL

12VSW

From Small Signal

Module

50VPSW

15VSW

20V

normal

-250V

G1SK

Blank

Daughter Module A - 17821 - XX

shut down

6.3VAC Fil Fil. Gnd

Blank

15VSW

To Video Output

Modules

Gnd

250V

3B5

15VSW

IC3200

CR3405

ABL SW

QX3408

Q3000

CR3012

CRX3008

CRX3009

15VSB

0V = normal 12V = fail

15V Ref

to ICX3401-15

H Drive DR SC

(not used GZ/GM)

ICX3405

CDisable

To ICX3401-14

SW On

CR3005

CR3006

0.47uF

VSense

PwrCntrl

100

CR3212

15VSW

8.56K

CR3001

4.7uF

10uF +

1.8K

15VSB

10K

CR3002

10K

1K 1K

15K

2V with scan

10uF

CR3003

CRX3012

30V

5.6K

1uF

9.1V Ref

470

10K

CR3016

CR3004

9.76K

-5V with scan

100uF

Q3410

10K

CRX3010

1010

110K

390K

330K

Q3001

Q3002

10K

740V

56K

CR3014

15VSW

250V

51K

10K

4.7uF

2.2M

Q3202

10K

L = normal H = fail

130K

L = normal H = shut down

CR3210

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 performanceimprovement changes into the set is not delayed until the new service literature is printed.

B+ AND HIGH VOLTAGE SHUTDOW N CIRCUIT

These sets utilizesafety 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 operationif you service these setsin 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

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 featurehas been addedto 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 SERIESCHASSIS 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.

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.

Displays on-screen menus for TV mode.

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.

SURF

GUIDE

Remote Control Part Number

124-212-37

POW ER

Turn TV On or Off

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.

SOURCE

Push to switch between

available sources connected to

your Entertainment Machine.

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

power

cable

aux 1

vcr

mode

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

mute

surf

flshbk

Return immediately to the last channel viewed.

CHANNEL UP/DOW N Scroll through your available channels.

record

enter

pip

quit/

pause

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

source

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

rew

play

stop

f.fwd

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 otherbrands, 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 beprogrammed: CATV, VCR, AUX, or

TV.

4. Enter “0-0-0,” then pressENTER within twoseconds.

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 mostoften, use Auto Find again to search for a better code. (Auto Find resumes its search after thelast code that wasentered 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 buttonto turn off theequipment. 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 willblink three timesand then turnoff.

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,

Emerson TV/VCR 158 Fisher 109, 118 Funai TV/VCR 154 General

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,

Magnavox TV/VCR 173, 181 Majestic 121 Marantz 104, 120, 155 Megatron 146 Memorex 121 MGA/

Mitsubishi Montgomery Ward 103, 104, 105, 113, 114,

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,

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,

Sharp 103, 105, 122, 133, 137, 156,

Signature 2000 103, 104, 105, 113, 114,

Sony 115, 143, 151, 170 Soundesign 139 Sylvania 112, 113, 117, 119, 127, 128,

Symphonic TV/VCR 15 4 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

145, 176

106, 107, 114, 116, 117, 161

127, 128, 130, 139, 165

104, 119, 120, 130, 133, 140, 155, 169, 178

119, 121, 130, 133

157,161,162,167,168

134

169

119, 121, 130, 133

139

VCRS

Admiral 208, 261 Adventura 231 Aiwa 231 Akai 223, 238, 241 Audio

Dynamics Bell & Howell 206, 247 Broksonic 221, 226, 233, 250, 255 Canon 214 Citizen 209 Craig 212 Criterion 239 Curtis

Mathes Daewoo 244, 246, 248, 254 Daytron 236, 246 DBX 202, 218 Emerson 203, 209, 221, 223, 226, 233,

Fisher 211, 212, 213, 247 Funai 231 General

Electric Goldstar 209, 273 Go Video 256, 262, 263, 275 Hitachi 215, 231, 257 Instant

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

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,

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,

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

202, 206, 218, 247

214, 259

235, 243, 250

214, 216, 220

214, 227

208, 214, 216, 219, 231, 249

244, 260

261

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 36 1 Amerkast 383 Dish Network 389 Gemini 305, 331, 338 General Electric 367 General

Instrument Hamlin 302, 303, 345, 365, 366 Jerrold 304, 307, 308, 309, 310, 318,

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 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

305, 306

360, 363

316, 323, 336, 364

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 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,

456

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

CM150/PV150 1-5 GM CHASSIS

CM150/PV150 1-6 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 atthe same time. Ifyou use the remotecontrol 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 andthen on again.FACTORY MODE canbe 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).

A-18728-04 1.30

EPROM

Part Number

09 Horz Pos 12

Item

Name

02/05/97

Software

version

Current Setting

Software

version

TE = 10110000

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=18jack,2=21jack. Factory

mode must be onto switch the setting. Aftermaking 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 assix

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 rangeand offset ofcontrast.

CM150/PV150 2-1 GM CHASSIS

SERVICE MENU

GM Service Menu A-18728-03 Ver. 1.30

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

0 Factory Mode 11111 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 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

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 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.

CM150/PV150 2-3 GM CHASSIS

SERVICING - SMALL SIGNAL MODULE REPLACEMENT

SMALL SIGNAL (MAIN) MODULE REPLACEMENT

AND TOUCHUP CONVERGENCE

IMPORTANT! All convergencedatais 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 fromtheoriginalmodule 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

Set has OSD Display

Record convergence values to worksheet

Install convergence values or transfer IC6002 to new Module

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 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.

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 GeometryAdjustment 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.

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

SERVICE MENU ITEMS

06 19 06 07 18 61 34

74 75 76 77 78 79 80

0370v

CM150/PV150 2-5 GM CHASSIS

+ 37 hidden pages

Zenith A50M91W1, A60M91D, IQA32M46W7, IQA56M98W5, IQA56M98W User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

OVERVIEW

SERVICE MENU