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SERVICE MANUAL
Product Type:
Chassis:
Manual Series: CM-150 and PV-150
Manual Part #: 923-3364R1
Model Line:
Product Year:
REVISED EDITION
This revised edition includes the original GM manual
(923-03364) and the first addendum (923-03419).
Printed in U.S.A.
ZEN REV2 600
Projection/Directview CTV
GM
A
1998
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
Ó
Copyright February 1999 by Zenith Electronics Corporation
Revised Edition August 1999
Model Series:
IQA36M46W
A50M84D
IQA36M46W4
A50M84W
IQA56M98D
A50M84W1
IQA56M98W
A50M84W5
IQA56M98W1
A50M84W9
IQA56M98W5
A50M91D
IQA56M98W9
A50M91W
IQA60M98D
A50M91W1
IQA60M98W
A50M91W5
IQA60M98W1
A50M91W9
IQA60M98W5
A56M91D
IQA60M98W9
A56M91W
RA46M84D
A56M91W1
RA46M84D1
A56M91W5
RA46M84D9
A56M91W9
RA46M84W
A60M91D
RA46M84W9
A60M91W
RA50M84D1
A60M91W1
RA50M84D9
A60M91W5
RA50M84W
A60M91W9
RA50M84W1
IQA32M46W
RA50M84W5
IQA32M46W4
RA50M84W9
IQA32M46W7
RA56M91D
IQA32M46W74
RA56M91D9
IQA36M46D
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Table of Contents
Related Manuals for Zenith CM-150 Series
Summary of Contents for Zenith CM-150 Series
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Page 1: Service Manual
Mechanical Drawings ........5 Schematics and PCB Layouts ......6 Published by Technical Publications Zenith Electronics Corporation 201 James Record Road - Huntsville, Alabama 35824-1513 Ó Copyright February 1999 by Zenith Electronics Corporation Revised Edition August 1999 Printed in U.S.A. ZEN REV2 600... - Page 2 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.
- Page 3 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 latched with its output high until power is removed by schematics for 9-1979. The basic HV shutdown circuit is turning the TV off.
- Page 4 If it should become necessary to replace one of bench supply until shutdown occurs, Shutdown must these factory controls use only the exact Zenith factory occur in the range from 34.3 to 36.5kV, If not, replacement part number. You must also adjust the...
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Page 5: Table Of Contents
TABLE OF CONTENTS Section 1 Section 6 Overview (General Information) ... 1-1 Schematics and PCBs MBR3457 Remote Control (Keys Defined) ..1-2 Wiring Diagram ..... . 6-1 TRK400 Remote Control (Keys Defined) . - Page 7 OVERVIEW GENERAL INFORMATION THE GM SERIES CHASSIS FEATURES TW ENTY ONE IC’S. IC6003 EPROM Memory. New Video features include a comb filter for processing IC6002 ROM is the EAROM Memory. incoming signals to provide fine detail images. Auto skin tone circuitry automatically maintains natural skin IC6000 Microprocessor located on the 9-1932 Module.
- Page 8 MBR3457 REMOTE CONTROL - KEYS DEFINED Indicator Light PRG (Program) POW ER Programs remote to Turn TV On or Off operate other products. Selects TV operation MUTE SURF Turns sound Off and On FLASBK (Flashback) While picture remains. Returns to previous channel VOLUME Left/Right SURF...
- Page 9 TRK4000 REMOTE CONTROL - KEYS DEFINED POW ER Turn your Entertainment Machine cable INDICATOR LIGHTS or any other programmed equipment Illuminate to show which on or off, depending on mode mode mode remote is in. MODE LEFT/RIGHT Adjust which mode remote is working in.
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Page 10: Remote Control Programming Codes
PROGRAMMING THE REMOTES PROGRAMMING THE MBR3457 REMOTE If you’re using Zenith products, the remote is already 4. Enter “0-0-0,” then press ENTER within two seconds. programmed for the most common codes: TV = 101, VCR 5. Point remote at the product. - Page 11 214, 259 Sanyo Zenith 301, 353 104, 116, 126, 157,161,162,167,168 215, 216, 220, 227, 240, 242, Scott Zenith HD Set Top 244, 260 Realistic 105, 123, 124 Sharp Zenith N/C Set Top 384, 395 Realistic 206, 208, 212, 214, 231...
- Page 12 CM150/PV150 GM CHASSIS...
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Page 13: Service Menu
SERVICE MENU GM CHASSIS A-LINE LINE SERVICE SETUP - Audio Coefficients (VCO addition, SAP VCO, SAP LPF, DIRECTVIEW AND PROJO LPF addition, Spectral, and W ideband) - Settings for the audio processor’s stereo decode system. Values, for Accessing The Service Menu Service Menu features 74 through 80, are found on a bar You may access the menu by using the keyboard or a code label on top of the Tuner/IF/Audio module. - Page 14 SERVICE MENU GM Service Menu A-18728-03 Ver. 1.30 INTEQ INTEQ 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 Factory Mode Preset Preset Theater Preset Game Preset Sports Preset...
- Page 15 SERVICE MENU GM Service Menu A-18728-03 Ver. 1.30 (continued) INTEQ INTEQ 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 Sports Black Stretcher Daylight Black Stretcher Weak Sig Black Stretcher Black Level Priority...
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Page 16: Servicing Small Signal Module Replacement
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 Green Convergence Mode Display retrieved from the original module either by recording the convergence values or transferring IC6002 to the... -
Page 17: Stereo Coefficients
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... - Page 18 PROJO CONVERGENCE SETUP PROCEDURE - MBR3457/TRK4000 Convergence Function Keys Convergence Function Keys Green Convergence Select cable Blue Convergence Select mode Blue Convergence Select SURF Red Convergence Select Green Convergence Select * Lin/In Lin Skew surf * Pin/D Pin * Key/D Key * Size/L Size (Green &...
- Page 19 PROJO CONVERGENCE SETUP PROCEDURE - MBR3457/TRK4000 (continued) 4. Locate physical center of display screen. Note: If you have a monoscope test pattern set horizontal size to 5 graticule marks (left and 5. Look at horizontal line and adjust by loosening yoke right) and vertical size to 4.0 graticule marks clamp and rotating yoke assembly.
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Page 20: Convergence Setup Worksheet
CONVERGENCE SETUP W ORKSHEET Use this chart to record the Red, Green, and Blue convergence setting values. You do not need to copy the "Geometry" settings as they are the result of the red, green, and blue settings. This chart is useful if you have to change a main module and still have a working video display. -
Page 21: Convergence Setup Illustrations
CONVERGENCE SETUP ILLUSTRATION CM150/PV150 GM CHASSIS... - Page 22 CM150/PV150 2-10 GM CHASSIS...
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Page 23: Troubleshooting
TROUBLESHOOTING TROUBLESHOOTING THE GM TELEVISION SYSTEM For most active signal checks and DC voltage measure- A system is easier to troubleshoot when broken down ments, use the right end of RX3401 in direct view into circuit groups. A blank display with no audio does products and the left end of RX3401 in projection not necessarily mean you are working with a dead set. - Page 24 TROUBLESHOOTING GM A Line Directview TV POW ER UP CHECKS - DEAD SET SW EEP/HV CHECKS - DEAD SET Check Standby Conditions Check AC Power Sweep ON Conditions Check 2N3 Cable Then Replace Power Supply Power Supply Then Replace (G1) (E4) 150VDC - RX3401 Power Supply...
- Page 25 TROUBLESHOOTING GM A Line Chassis Power Control Projection Not Used 15VDVCNTL 15V SB <16.35V> (15.9V) PW R CTRL <0V> (3.7V) PW R SUPPLY MAIN 12V SW <0V> (11.8V) SW EEP 37V SBY <39.5V> (37.4V) MODULE MODULE PW R DD <27V> (28.8V) 2G3-3 2N3-2...
- Page 26 TROUBLESHOOTING GM A Line Projection TV POW ER UP CHECKS - DEAD SET SW EEP/HV CHECKS - DEAD SET Check Standby Conditions Check AC Power Sweep ON Conditions Check 2N3 Cable Then Replace Power Supply Power Supply Then Replace (G2) (F5) 150VDC - CR3402 C Power Supply...
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Page 27: Servicing
SERVICING make the convergence alignment adjustments in the GM DIRECTVIEW SERVICE CONTROLS following order: The service menu controls are limited to the G-2, focus, Display size and lens focus vertical size, and horizontal size. There are controls on G-2 and electrical focus the Tuner/IF/Audio Processor module but you will not Yoke for tilt and centering be able to access these. - Page 28 SERVICING To set G-2 place the G-2 set up jumper (SW1), the jumper The GM chassis convergence is controlled by the remote is on the rear left corner of the main module, place control. To put the projection system into the conver- jumper into setup position.
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Page 29: Service Adjustments
SERVICE ADJUSTMENTS DIRECT VIEW PURITY & CONVERGENCE SET-UP PROCEDURE PRELIMINARY SET-UP CONVERGENCE ADJUSTMENT 1. Allow the receiver to warm up for 15 to 20 minutes. 1. Release locking assembly. 2. Degauss the CRT. 2. Connect crosshatch generator to the receiver and ad- just static (center) convergence as follows: 3. - Page 30 SERVICE ADJUSTMENTS DIRECT VIEW (continued) VERTICAL-TILT W EDGE ADJUSTMENT IMPROVING CRT CORNER PURITY The vertical lines at 6 and 12 o’clock are converged by CRT’s that display corner purity problems even after vertically tilting the yoke and inserting a wedge at the following service procedures can be modified with a top of the yoke until it is firmly seated between the CRT picture correction kit (P/N 949-50).
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Page 31: Gm Crt Assembly
SERVICE ADJUSTMENTS Installed GM CRT Assembly Convergence Yoke Assembly 2 Pole Yoke Assembly Lens Coolant Assembly Assembly Replacement CRT Assembly Transfered Assemblies Convergence Yoke Assembly 2 Pole Yoke Assembly Video Module Assembly Coolant Assembly CM150/PV150 GM CHASSIS... - Page 32 GM DIRECT VIEW - SMALL SIGNAL Q4101 R4101 R4106 W 97 W 55 Q4102 D4102 W 12 IC4103 System Micro R4102 Q890 For Future Use R861 RX849 Q4105 R812 Q845 Tuner-IF/Audio D801 For Future Use R815 Comb/Video Source Switch Assembly W 43 JP11 JP10...
- Page 33 GM DIRECT VIEW - LARGE SIGNAL VR3249 ZDX3004 ZD2100 H SIZE ZCX3415 DX3002 QX3203 Q3404 Q3403 Q2102 ICX3200 D3419 D3220 W 18 DZ3420 W 48 C3422 VR2138 QX3204 W 47 Q3402 V SIZE D3416 QX3206 D3204 L3402 D3234 Q3405 QX3202 D3203 D3412 anode at top...
- Page 34 GM PROJO - SMALL SIGNAL Q5506 9W 4 Q5507 Q5509 Q5508 D5503 D5508 VMGRA VMBL VMRD VMGR Q4101 R4101 R4106 W 97 W 55 Q4102 D4102 W 12 IC4103 System Micro R4102 Q890 For Future Use R861 RX849 Q4105 R812 Q845 Tuner-IF/Audio D801...
- Page 35 GM PROJO - LARGE SIGNAL ICX3000 R3227 R2104 H Size V Size 3H33 3H32 Q3205 3H31 CR3216 CR3211 Q3101 CR2101 CR3201 Q3100 IC2100 CR3100 CR2102 RX3501 Q3502 QX3204 Q3501 G D S QX3201 CR3505 A-17821-03 Assembly con4 con1 con3 con5 con6 con2 3D31...
- Page 36 CM150/PV150 3-14 GM CHASSIS...
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Page 37: Single Pip
SECTION 4 Model Parts MODEL PARTS A50M84D A-17649-49 LIQUID COUPLER, ASSEMBLY, GREEN 002-04091 CABINET BACK, LOWER, MOLDED PLASTIC A-17649-50 LIQUID COUPLER, ASSEMBLY, BLUE 002-04093 CABINET BACK, UPPER, MOLDED PLASTIC, 50V A-17649-51 LIQUID COUPLER, ASSEMBLY, RED 009-01650-02 MODULE, SINGLE PIP A-17715-02 SHIELD ASSY, PROTECTIVE BARRIER 009-01690-01 MODULE, REGISTRATION... -
Page 38: Single Pip
MODEL PARTS (Continued) 057-09080-01 ESCUTCHEON, OPTIC SCREEN, 50V 009-01936-01 MODULE, VIDEO OUTPUT, GREEN 095-04480 TRANSFORMER, DEFLECTION YOKE 009-01937-01 MODULE, VIDEO OUTPUT, BLUE 124-00212-37 SPACE COMMAND, TRANSMITTER, MBR3457 009-01938-01 MODULE, VIDEO OUTPUT, RED 138-01946-01 CABINET GRILLE 009-01942 MODULE, SMALL SIGNAL 192-00858-02 LENS, PRIMARY CONTROLS AND IR 009-01978 MODULE, LARGE SIGNAL... - Page 39 MODEL PARTS (Continued) A50M91W1 A-17649-59 LIQUID COUPLER, ASSEMBLY, BLUE 002-04091 CABINET BACK, LOWER, MOLDED PLASTIC, A-17649-60 LIQUID COUPLER, ASSEMBLY, RED 002-04093 CABINET BACK, UPPER, MOLDED PLASTIC, 50V A-17715-03 SHIELD ASSY, PROTECTIVE BARRIER 009-01689-02 MODULE, 2 TUNER SINGLE PIP A-17821-05 PC DAUGHTER BOARD ASSY 009-01690-01 MODULE, REGISTRATION A-17869...
- Page 40 MODEL PARTS (Continued) 012-09224-01 BRACKET, IR SENSOR 138-01950-03 CABINET GRILLE 014-12315-02 CABINET MAIN, TV, WOOD 192-00858-02 LENS, PRIMARY CONTROLS AND IR 046-10555 KNOB ARRAY, PUSH-BUTTON, 10 POSITIONS, STR 192-00891-02 SCREEN, OPTICAL, PROJECTION TV, 56V, 2MM 049-01257-08 SPEAKER, OVAL 198-00035 MIRROR, MYLAR, FIRST SURFACE, 56V 049-01364 SPEAKER, ROUND, 2 INCH, PIEZO A-17196-12...
- Page 41 MODEL PARTS (Continued) A-17869 INFRARED DETECTOR, AMP, ASSEMBLY 009-01783A MODULE, IF, STEREO A-18159-10 ACCESSORY KIT, SCREEN PROTECTOR AND RETAINERS, 60V 009-01924 MODULE, VIDEO 2H COMB FILTER A-18682 POWER CORD ASSY 009-01932 MODULE, MICRO AND PROM F-53015 KEYBOARD ASSY, CUSTOMER CONTROLS 009-01936-01 MODULE, VIDEO OUTPUT, GREEN A60M91W...
- Page 42 CABINET REAR, TV, MOLDED PLASTIC 124-00219-01 SPACE COMMAND, TRANSMITTER, TRACKBALL, TRK4000 020-04330-33 COIL, DEGAUSSER 126-03665 SHIELD, OPTIC SCREEN 030-01526 DECORATIVE ITEM, LOGO, ZENITH 138-01950-04 CABINET GRILLE 046-10561-02 KNOB ARRAY, PUSH BUTTON, 10 POSITIONS 192-00858-02 LENS, PRIMARY CONTROLS AND IR 049-01368-03...
- Page 43 014-12285-09 CABINET REAR, TV, MOLDED PLASTIC IQA36M46W 020-04330-33 COIL, DEGAUSSER 009-01689-02 MODULE, 2 TUNER SINGLE PIP 030-01526 DECORATIVE ITEM, LOGO, ZENITH 009-01783A MODULE, IF, STEREO 046-10561-02 KNOB ARRAY, PUSH BUTTON, 10 POSITIONS 009-01913 MODULE, SMALL SIGNAL 049-01368-03 SPEAKER, OVAL, 6 X 13 CM...
- Page 44 MODEL PARTS (Continued) IQA56M98D 198-00035 MIRROR, MYLAR, FIRST SURFACE, 56V 002-04091 CABINET BACK, LOWER, MOLDED PLASTIC A-17196-12 BLEEDER ASSY 002-04094 CABINET BACK, UPPER, MOLDED PLASTIC, 56V A-17552 LENS & HOUSING, ASSEMBLY, DELTA 77, GREEN 009-01689-02 MODULE, 2 TUNER SINGLE PIP A-17552-04 LENS &...
- Page 45 MODEL PARTS (Continued) IQA60M98D 014-12328-01 CABINET MAIN, TV, WOOD 002-04079-03 CABINET BACK, UPPER, MOLDED PLASTIC, 60V, W/ AUD. JACKS 024-03405-05 COVER, JACK PANEL, MOLDED PLASTIC 002-04081-05 CABINET BACK, LOWER, MOLDED PLASTIC 030-01505-03 DECORATIVE ITEM, OVERLAY, FRONT JACK PACK 009-01689-02 MODULE, 2 TUNER SINGLE PIP 046-10555-02 KNOB ARRAY, PUSH-BUTTON, 10 POSITIONS 009-01690-01...
- Page 46 MODEL PARTS (Continued) 095-04480 TRANSFORMER, DEFLECTION YOKE, A-17649-51 LIQUID COUPLER, ASSEMBLY, RED 124-00219-01 SPACE COMMAND, TRANSMITTER, TRACKBALL, TRK4000 A-17715-03 SHIELD ASSY, PROTECTIVE BARRIER 138-01936-04 CABINET GRILLE A-17869 INFRARED DETECTOR, AMP, ASSEMBLY 192-00866-02 SCREEN, OPTICAL, PROJECTION TV A-18542 ACCESSORY KIT, SCREEN PROTECTOR AND RETAINERS, 60V 198-00030 MIRROR, PLASTIC, FIRST SURFACE, MYLAR, 60V A-18682...
- Page 47 MODEL PARTS (Continued) RA46M84D5 009-01936-01 MODULE, VIDEO OUTPUT, GREEN 002-04081-05 CABINET BACK, LOWER, MOLDED PLASTIC 009-01937-01 MODULE, VIDEO OUTPUT, BLUE 002-04082 CABINET BACK, UPPER, MOLDED PLASTIC, 46V 009-01938-01 MODULE, VIDEO OUTPUT, RED 009-01650-02 MODULE, SINGLE PIP 009-01978 MODULE, LARGE SIGNAL 009-01690-01 MODULE, REGISTRATION 012-09224-01...
- Page 48 MODEL PARTS (Continued) 138-01942 CABINET GRILLE A-17649-53 LIQUID COUPLER, ASSEMBLY, BLUE 192-00890 OPTIC FILTER, SCREEN PROTECTOR A-17649-54 LIQUID COUPLER, ASSEMBLY, RED 192-00891 SCREEN, OPTICAL, PROJECTION TV, 46V, 2MM A-17715-02 SHIELD ASSY, PROTECTIVE BARRIER 198-00026-03 MIRROR, GLASS, FIRST SURFACE, 46V A-17821-05 PC DAUGHTER BOARD ASSY A-17196-12 BLEEDER ASSY...
- Page 49 MODEL PARTS (Continued) 009-01978 MODULE, LARGE SIGNAL 002-04093 CABINET BACK, UPPER, MOLDED PLASTIC, 50V 012-09224-01 BRACKET, IR SENSOR 009-01650-02 MODULE, SINGLE PIP 014-12314-01 CABINET MAIN, TV, WOOD 009-01690-01 MODULE, REGISTRATION 046-10555 KNOB ARRAY, PUSH-BUTTON, 10 POSITIONS, STR 009-01783-01A MODULE, IF, STEREO 049-01257-08 SPEAKER, OVAL 009-01914...
- Page 50 MODEL PARTS (Continued) 124-00212-37 SPACE COMMAND, TRANSMITTER, MBR3457 A-17649-59 LIQUID COUPLER, ASSEMBLY, BLUE 138-01946-01 CABINET GRILLE A-17649-60 LIQUID COUPLER, ASSEMBLY, RED 192-00858-02 LENS, PRIMARY CONTROLS AND IR A-17715-02 SHIELD ASSY, PROTECTIVE BARRIER 192-00890-13 OPTIC FILTER, SCREEN PROTECTOR A-17821-05 PC DAUGHTER BOARD ASSY 192-00891-01 SCREEN, OPTICAL, PROJECTION TV, 50V, 2MM A-17869...
- Page 51 MODEL PARTS (Continued) 009-01938-01 MODULE, VIDEO OUTPUT, RED 009-01942 MODULE, SMALL SIGNAL 009-01978 MODULE, LARGE SIGNAL 012-09224-01 BRACKET, IR SENSOR 014-12315-01 CABINET MAIN, TV, WOOD 046-10555 KNOB ARRAY, PUSH-BUTTON, 10 POSITIONS, STR 049-01257-08 SPEAKER, OVAL 049-01364 SPEAKER, ROUND, 2 INCH, PIEZO 057-09082 ESCUTCHEON, OPTIC SCREEN, 56V 095-04480...