Sony CM150 Service Manual

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.

CM150 GA - SAFETY

TABLE OF CONTENTS

SECTION 1 GENERAL INFO

OVERVIEW ............................................................. 1-1

MODEL INFORMATION ....................................... 1-1

SC3492A MODEL REMOTE CONTROL ........................... 1-2

MBR3447 MODEL REMOTE CONTROL ........................... 1-3

MBR3447A MODEL REMOTE CONTROL ......................... 1-4

MBR3446 MODEL REMOTE CONTROL ........................... 1-5

REMOTE PROGRAMMING ........................................... 1-6

AUTO FIND ..................................................... 1-6

CABLE BOX ..................................................... 1-6

VOLUME OVERRIDE........................................... 1-6

SPECIAL FEATURES........................................... 1-6

REMOTE PROGRAMMING CODES ................................. 1-7

SECTION 2 INSTALLERS MENU

INSTALLERS MENU .................................................. 2-1

FACTORY RECOMMENDED SETTINGS 221-01164-01 ....... 2-3

FACTORY RECOMMENDED SETTINGS 221-01164-02 ....... 2-4

FACTORY RECOMMENDED SETTINGS 221-01305-01 ....... 2-7

SECTION 3 SERVICING

SERVICE INFORMATION ............................................ 3-1

GENERAL INFORMATION .................................... 3-1

HIGH-VOLTAGE AND X-RADIATION PROTECTION ..... 3-1

THEORY OF OPERATION (SHUTDOWN CIRCUIT) ...... 3-1

HV MEASUREMENT PROCEDURE .......................... 3-2

SERVICING THE MODULE ................................... 3-2

SERVICING THE POWER SUPPLY GA1 19”/20” ....... 3-2

POWER ON (9-1869/70/71 AND 9-1950) ............. 3-2

SWITCHED VOLTAGES ........................................ 3-2

SWEEP DERIVED VOLTAGES ................................ 3-2

SERVICING THE POWER SUPPLY .......................... 3-2

SWITCHED VOLTAGES ........................................ 3-2

SWEEP DERIVED VOLTAGES ................................ 3-3

VIDEO PROCESSOR ICX2200 .............................. 3-3

VERTICAL CIRCUIT ............................................ 3-3

HORIZONTAL CIRCUIT ........................................ 3-3

SERVICE ADJUSTMENTS (MECHANICAL) ............... 3-4

FOCUS ADJUSTMENT ......................................... 3-4

GA1/GA2 RGB CUTOFF (1164 MICRO)................... 3-4

SERVICE ADJUSTMENTS ........................................... 3-4

GA3 OF RGB CUTOFF (1305 MICRO) ..................... 3-4

PURITY & CONVERGENCE SETUP PROCEDURE ........ 3-6

VERTICAL-TILT WEDGE ADJUSTMENT .................... 3-7

HORIZONTAL-TILT WEDGE ADJUSTMENT ................ 3-7

UNUSUAL TILT CASE ......................................... 3-7

IMPROVING CRT CORNER PURITY ........................ 3-7

MODIFICATION................................................. 3-7

IC DESCRIPTIONS ................................................... 3-8

SECTION 4 PARTS

GA-1 MODELS ........................................................ 4-1

A19A02D........................................................ 4-1

A19A02D4 ..................................................... 4-1

A19A02D7 ...................................................... 4-1

A19A02D74 .................................................... 4-1

A19A02D8 ...................................................... 4-1

A19A11D........................................................ 4-2

A19A11D4 ...................................................... 4-2

A19A11D7 ...................................................... 4-2

A19A11D74 .................................................... 4-2

A19A11D8 ...................................................... 4-2

A19A11D84 .................................................... 4-2

A20A22D........................................................ 4-3

A20A22D4 ...................................................... 4-3

A20A22D8 ...................................................... 4-3

A20A22D84 .................................................... 4-3

LGA20A02DM .................................................. 4-3

LGA20A02DM4................................................. 4-3

LGA20A02DM7................................................. 4-4

LGA20A02DM74 ............................................... 4-4

LGA20A02DM8................................................. 4-4

LGA20A02DM84 ............................................... 4-4

LGA20A02GM .................................................. 4-4

LGA20A02GM8 ................................................. 4-5

LGA20A04DM .................................................. 4-5

LGA20A04DM7................................................. 4-5

LGA20A04DM74 ............................................... 4-5

LGA20A04DM8................................................. 4-5

LGA20A04DM84 ............................................... 4-6

LGA20A05DM .................................................. 4-6

LGA20A05DM7................................................. 4-6

LGA20A05DM74 ............................................... 4-6

LGA20A05DM8................................................. 4-7

LGA20A05DM84 ............................................... 4-7

LGA20A11DM .................................................. 4-7

LGA20A11DM7................................................. 4-7

LGA20A11DM74 ............................................... 4-7

LGA20A11DM8................................................. 4-8

LGA20A11DM84 ............................................... 4-8

LGA21A22DM .................................................. 4-8

LGA21A22DM4................................................. 4-8

LGA21A22DM8................................................. 4-8

LGA21A22DM84 ............................................... 4-9

GA-2 MODELS ........................................................ 4-9

A25A02D........................................................ 4-9

A25A02D4 ...................................................... 4-9

A25A02D64 .................................................... 4-9

A25A02D7 ...................................................... 4-9

A25A02D74 .................................................... 4-9

A25A02D8 .................................................... 4-10

A25A02D84 .................................................. 4-10

A25A11D...................................................... 4-10

A25A11D4 .................................................... 4-10

A25A11D64 .................................................. 4-10

A25A11D7 .................................................... 4-10

A25A11D74 .................................................. 4-11

A25A11D8 .................................................... 4-11

A25A11D84 .................................................. 4-11

A25A12D...................................................... 4-11

CM150 TOC - 1 GA -TOC

TABLE OF CONTENTS

A25A12D4 .................................................... 4-11

A25A74R ...................................................... 4-11

A25A74R7 .................................................... 4-12

A25A74R8 .................................................... 4-12

A25A76R ...................................................... 4-12

A25A76R7 .................................................... 4-12

A25A76R8 .................................................... 4-13

A27A11D...................................................... 4-13

A27A11D4 .................................................... 4-13

A27A11D8 .................................................... 4-13

A27A11D84 .................................................. 4-13

A27A12D...................................................... 4-13

A27A12D4 .................................................... 4-14

A27A12D8 .................................................... 4-14

LGA26A02DM ................................................ 4-14

LGA26A02DM4............................................... 4-14

LGA26A02DM64 ............................................. 4-14

LGA26A02DM7............................................... 4-14

LGA26A02DM74 ............................................. 4-15

LGA26A02DM8............................................... 4-15

LGA26A11DM ................................................ 4-15

LGA26A11DM4............................................... 4-15

LGA26A11DM64 ............................................. 4-15

LGA26A11DM7............................................... 4-16

LGA26A11DM74 ............................................. 4-16

LGA26A11DM8............................................... 4-16

LGA26A12DM ................................................ 4-16

LGA26A02GM ................................................ 4-16

LGA26A02GM7 ............................................... 4-16

LGA26A02GM8 ............................................... 4-17

LGA29A11DM ................................................ 4-17

LGA29A11DM4............................................... 4-17

LGA29A11DM8............................................... 4-17

LGA29A11DM84 ............................................. 4-17

LGA29A12DM ................................................ 4-17

LGA29A12DM4............................................... 4-18

LGA29A12DM84 ............................................. 4-18

LGA29A11GM ................................................ 4-18

GA-3 MODELS ...................................................... 4-18

A25A22BT .................................................... 4-18

A25A22BT4 .................................................. 4-18

A25A22BT64 ................................................. 4-19

A25A22BT7 .................................................. 4-19

A25A22BT74 ................................................. 4-19

A25A22BT8 .................................................. 4-19

A25A22BT84 ................................................. 4-19

A25A23W ..................................................... 4-20

A25A23W4 .................................................... 4-20

A25A23W6 .................................................... 4-20

A25A23W64 .................................................. 4-20

A25A23W7 .................................................... 4-21

A25A23W74 .................................................. 4-21

A25A23W8 .................................................... 4-21

A25A23W84 .................................................. 4-21

A25A23W9 .................................................... 4-21

A27A22BT .................................................... 4-22

A27A22BT4 .................................................. 4-22

A27A22BT8 .................................................. 4-22

A27A22BT84 ................................................. 4-22

A27A23W ..................................................... 4-23

A27A23W4 .................................................... 4-23

A27A23W8 .................................................... 4-23

A27A23W84 .................................................. 4-23

A27A74R ...................................................... 4-23

A27A74R8 .................................................... 4-23

A27A76R ...................................................... 4-24

A27A76R8 .................................................... 4-24

LGA26A23WM ................................................ 4-24

LGA26A23WM6 .............................................. 4-24

LGA26A23WM7 .............................................. 4-25

LGA26A23WM74............................................. 4-25

LGA26A23WM8 .............................................. 4-25

LGA26A23WM9 .............................................. 4-25

LGA29A23WM ................................................ 4-25

LGA29A23WM4 .............................................. 4-26

LGA29A23WM8 .............................................. 4-26

LGA29A23WM84............................................. 4-26

SECTION 5 EXPLODED VIEWS

GA1 19/20V MONO TABLE TOP SET EXPLODED VIEW..... 5-1

GA1 19/20V STEREO TABLE TOP SET EXPLODED VIEW... 5-2

GA2 25/26V TABLE TOP SET EXPLODED VIEW .............. 5-3

GA2 25V TRADITIONAL CONSOLE EXPLODED VIEW ....... 5-4

GA2 25V CONTEMPORARY CONSOLE EXPLODED VIEW .... 5-5

GA2 27/29V TABLE TOP SET EXPLODED VIEW .............. 5-6

GA3 25/26V TABLE TOP SET EXPLODED VIEW .............. 5-7

GA3 27/29V TABLE TOP SET EXPLODED VIEW .............. 5-8

GA3 27V TRADITIONAL CONSOLE EXPLODED VIEW ....... 5-9

GA3 27V CONTEMPORARY CONSOLE EXPLODED VIEW .. 5-10

SECTION 6 SCHEMATICS

GA1 SCHEMATICS.................................................... 6-1

INTERCONNECT DIAGRAM .................................. 6-1

AUDIO PROCESSOR .......................................... 6-2

MAIN PROCESSOR ............................................ 6-3

VIDEO PROCESSOR ........................................... 6-4

POWER SUPPLY & H/V DEFLECTION ..................... 6-5

VIDEO OUTPUT ................................................ 6-6

BLOCK DIAGRAMS ............................................ 6-7

PCB LAYOUT.................................................... 6-8

SMD LAYOUT ................................................... 6-9

GA2 SCHEMATICS.................................................. 6-11

INTERCONNECT DIAGRAM ................................ 6-11

POWER SUPPLY .............................................. 6-12

AUDIO PROCESSOR ........................................ 6-13

MAIN PROCESSOR .......................................... 6-14

VIDEO PROCESSOR ......................................... 6-15

H/V DEFLECTION ............................................ 6-16

VIDEO OUTPUT .............................................. 6-17

BLOCK DIAGRAMS .......................................... 6-18

PCB LAYOUT.................................................. 6-19

SMD LAYOUT ................................................. 6-20

GA3 SCHEMATICS.................................................. 6-21

INTERCONNECT DIAGRAM ................................ 6-21

POWER SUPPLY .............................................. 6-22

AUDIO PROCESSOR ........................................ 6-23

MAIN PROCESSOR .......................................... 6-24

VIDEO PROCESSOR ......................................... 6-25

H/V DEFLECTION ............................................ 6-26

JACK & SWITCHING CIRCUIT ............................ 6-27

VIDEO OUTPUT .............................................. 6-28

BLOCK DIAGRAMS .......................................... 6-29

PCB LAYOUT.................................................. 6-30

CM150 TOC - 2 GA -TOC

SECTION 1

OVERVIEW

The GA series chassis was developed for Sentry 2, screen sizes 19" through 27" stereo and mono models. The chassis is a single sided printed circuit board. One board is used for the 19" and 20" connected sets. A second board is used on the 25" and 27" isolated sets. During the manufacturing process, the EAROM is programmed for any added features. Output jacks will be added to the board to accommodate the different features: Video/ Audio In, Non MTS Stereo, and MTS Stereo.

The GA series chassis features three IC’s for all signal, sync and sweep processing. ICX2200 handles all of the audio/video, sync and sweep drive processing. IC6000 is the microprocessor and IC6001 is the EAROM memory. The keyboard and IR detector are tied directly to IC6000. IC2100/2101 handles the vertical sweep.

At turn on, voltages for the vertical and video output circuit are derived from the sweep circuit.

The GA chassis is comprised of three (3) categories. GA1, GA-2, and GA-3. Each category represents the screen size and different model feature levels.

The GA-1 chassis had five module variations which are as follows:

9-1869 (19/20V, Mono) Main Module w/o Jack Assy. 9-1870 (19/20V, Non MTS Stereo) Main Module w/o Jack

Assy.

OVERVIEW

MODEL INFORMATION

A-18577. 9-1950 (19/20V, Mono) Main Module w/2 Jack Assy, A-

18577-01. The GA-2 chassis has three module variations which are

as follows: 9-1789 (25V, Mono) Main Module w/o Jack Assy. 9-1790 (25V, Stereo) Main Module w/3 Jack Assy, A-

18577. 9-1791 (27V, Non MTS Stereo) Main Module w/3 Jack

Assy, A-18577. 9-1831 (25V Stereo) Main Module w/3 Jack Assy. A-

18577. 9-1831 (25V, Stereo) Main Module w/3 Jack Assy, A-

18577. The GA-3 chassis also has three module variations which

are as follows: 9-1996 (25V, MTS Stereo) Main Module w/5 Jack Assy,

A-18785. 9-1997 (27V, MTS Stereo) Main Module w/5 Jack Assy.

A-18785. 9-1998 (27V, MTS Stereo) Main Module w/5 Jack Assy.

A-18785.

9-1871 (19/20V, MTS Stereo) Main Module w/3 Jack Assy,

CM150 1-1 GA - GENERAL

SC3492A MODEL REMOTE CONTROL

POWER

Press to turn

TV ON or OFF

Press to access

closed captions.

Press (and repeat) to

activate the sleep timer

Press left to reduce or right to increase

volume level of TV.

NUMBERED BUTTONS

Press repeatedly to

select desired menu.

TIMER

VOLUME

MUTE

Press to turn off sound while picture remains. Press again

to restore sound.

FLSHBK

Press to return to last TV channel you were watching.

CHANNEL Up/Down

Press to select a TV channel by going up/down through channels programmed in the TV memory.

ENTER

Press to view Channel/Time or to remove any on-screen or

display in TV mode. Press to view

Display

the Music menu (acti ve station) listing in FM mode.

ADJUST (Left/Right)

Press during on-screen

menu operations to

adjust an option.

SELECT

Press during on-screen menu operations to select an option.

SC3492A

124-00213-1

CM150 1-2 GA - REMOTES

MBR3447 MODEL REMOTE CONTROL

FLASHBK ( Flashback)

Returns to previous Channel.

SURF

Turns Surf Channel On/Off

POWER

Turns TV On or Off.

MODE

Selects the remote’s mode of operation

MUTE

Turns soun d O ff an d On whil e pi ctur e remains.

CHANNEL (Up/Do wn)

Selects ne xt ch annel in

TV’s memory. Press

and hold to r epe at .

NUMBER PAD

Selects ch annels direc tly.

Display s m enus for TV

and other opt ions.

LEFT/RIGHT ARROWS

Chooses and show s t he

desired menu option.

A, B, C Ke ys

Special features of some TV’s

TIMER

Displays the Sleep Timer menu.

Press repeatedly to set desired

TV shut-off time.

VOLUME (Left/Right)

Increases TV’s sound level.

ENTER

Shows Channel/Time, enters channe l , or r em oves any on-screen menus.

QUIT/ (Three Functions Key)

Exits from on-screen display, turns the sound enhancement feature on or off, and swi tches audio between Main source and PIP source.

UP and DOWN ARROWS

Moves hi ghlighted ba r wi t hin menu to select an option.

Display s cl o sed caption m enu.

TV/VCR SOURCE

Steps through source options.

MBR3447

124-00212-35

CM150 1-3 GA - REMOTES

MBR3447A MODEL REMOTE CONTROL

FLASHBK (Flashback )

Returns to previous Channel.

SURF

Turns Surf Channel On/Off

POWER

Turns TV On or Off.

MODE

Selects the remote’s mode of operation

MUTE

Turns soun d O ff an d O n whil e pi cture remain s.

CHANNEL (Up/Down)

Selects next channel in

TV’s memory. Press

and hold to r epe at .

NUMBER PAD

Selects channels dir ec tly.

Displays m enus for TV

and other options.

LEFT/RIGHT ARROWS

Chooses and show s t he

desi red menu option .

A, B, C Keys

Special features of some TV’s

TIMER

Displays the Sleep Timer menu.

Press repeatedly to set desired

TV shut-off time.

VOLUME (Left/Right)

Increases TV’s sound level.

ENTER

Shows Channel/Time, enters channe l , or r em oves any on-screen menus.

QUIT/ (Three Functions Key)

Exits from on -s cr een displa y, turns the sound enhancement feature on or off, and swit ches audio be t ween Main source and PIP source.

UP and DOWN ARROWS

Moves hi ghlighted bar within menu to select an option.

Display s cl o sed caption menu.

TV/VCR SOURCE

Steps through source options.

MBR3447A

124-00212-58

CM150 1-4 GA - REMOTES

MBR3446 MODEL REMOTE CONTROL

FLASHBK ( Flashback)

Returns to previous Channel.

A Key

Special feature of so m e TV’s

POWER

Turns TV On or Off.

MODE

Selects the remote’s mode of operation

MUTE

Turns soun d O ff an d On whil e pi ctur e remains.

CHANNEL (Up/Do wn)

Selects ne xt ch annel in

TV’s memory. Press

and hold to r epe at .

NUMBER PAD

Selects ch annels direc tly.

Display s m enus for TV

and other opt ions.

LEFT/RIGHT ARROWS

Chooses and show s t he

desired menu option.

B, C, D, E Keys

Special features of some TV’s

TIMER

Displays the Sleep Timer menu.

Press repeatedly to set desired

TV shut-off time.

VOLUME (Left/Right)

Increases TV’s sound level.

ENTER

Shows Channel/Time, enters channe l , or r em oves any on-screen menus.

QUIT/ (Three Functions Key)

Exits from on-screen display, turns the sound enhancement feature on or off, and swi tches audio between Main source and PIP source.

UP and DOWN ARROWS

Moves hi ghlighted ba r wi t hin menu to select an option.

Display s cl o sed caption m enu.

TV/VCR SOURCE

Steps through source options.

MBR3446

124-00212-62

CM150 1-5 GA - REMOTES

REMOTE PROGRAMMING

PROGRAMMING THE MBR3446 AND MBR3447 REMOTES

If you’re using Zenith products, the remote is already programmed for most common codes. For other brands, or if your remote fails to control your Zenith products, you’ll have to program the remote.

After installing the batteries, follow these steps for each product:

1. Press and hold PRG using a blunt pointed object. Release PRG after indicator light turns on.

2. Press the device button to be programmed: CATV, VCR, AUX, or TV.

3. Enter 3-digit product code from chart on next page.

4. Press and release ENTER to save code.

5. Point remote at product and press POWER to test product operation. If it does not turn on, reprogram remote using a different code.

6. Write codes on the label inside battery compartment for future reference.

AUTO FIND

If none of the codes in the code table operate your equipment, use Auto Find to search for the proper code.

1. Turn On the device you want to operate.

2. Press and hold PRG using a blunt pointed object. Release PRG after the indicator light turns on.

3. Press the device button to be programmed: CATV, VCR, AUX, or TV.

4. Enter “000”, then press ENTER within two seconds. Auto Find is active when the indicator light flashes and remains lit.

5. Point the remote at the product.

6. Press and release POWER repeatedly, about once a second, until your product turns Off. The indicator light turns Off when you press POWER, and On when you release it.

7. Press ENTER immediately to save the code. The indicator light flashes to indicate the code has been saved.

8. Press POWER to turn On your product.

9. Test your product. If the remote fails to operate the functions you use most often, use Auto Find again to search for a better code. (Auto Find resumes its search after the last code that was entered and saved in step 7).

NOTE: If the indicator light stays on as you press

POWER, Auto Find has tried all of the codes.

If the product you want to control has not

turned off, your remote will not work with

that product.

To cancel Auto Find, press PRG at any time during Auto Find.

CABLE BOX

These remotes can control cable/converter box volume and muting if available on your equipment.

1. Program the cable/converter box normally.

2. After programming the cable/converter box, Press and hold PRG again using a blunt pointed object. Release PRG after indicator light turns on.

3. Press and release the cable device button.

4. This time, enter the special code 3-9-9 instead of the product code.

5. Press and release ENTER to save.

VOLUME OVERRIDE

These remotes can override TV, VCR, or Video Disk Player volume functions with an amplifier’s volume and muting.

1. Program the amplifier normally.

2. After programming the amplifier, Press and hold PRG again using a blunt pointed object. Release PRG after indicator light turns on.

3. Press and release the device button whose volume control is to be replaced by the amplifier volume control. For example, pressing TV will operate the amplifier’s volume while the remote is in TV mode.

4. This time, enter the special code 4-9-9 instead of the product code.

5. Press and release ENTER to save.

SPECIAL FEATURES

AUX+1, AUX+2, AND AUX+3 Capability These remotes can control up to seven devices. If the remote has been programmed for four components using the TV, VCR, CABLE and AUX keys, you may also program it for up to three additional using AUX+1, AUX+2 and AUX+3.

To Program AUX+1, AUX+2, AND AUX+3

1. Locate three-digit code for product in code table.

2. Press and hold PRG until indicator lights up.

3. Press AUX and “1” simultaneously to select AUX+1.

4. Enter three-digit code, then press ENTER. Indicator light should flash, then turn off to indicate code is accepted. If the light stays on, repeat steps 3 and 4 or try a different code.

5. Repeat steps 2-4 for AUX+2 and AUX+3.

6. Write codes on the label inside battery compartment for future reference. Hold down AUX and press 1, 2, or 3 to access AUX+1. +2 or +3 mode.

CM150 1-6 GA - REMOTES

REMOTE PROGRAMMING CODES

TV’S

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 Mathis 116, 119, 121 Daewoo 149, 159 Daytron 119 Elektra 121 Emerson 103,104,123,124, 131,

Fisher 109, 118 General 106, 107, 114, 116, Electric 117, 161 Goldstar Hitachi Inteq 101 J.C. Penney JVC 125, 132, 164 KMC 103 KTV 103, 104, 138 Kurazai 121 LG 184 Lodgenet 121 Logik 121 LXI 133, 137 Magnavox

Majestic 121 Marantz 104, 120, 155 Megatron 146 Memorex 121 MGA/Mitsubishi

Montgomery Ward 103, 104, 105, 113,

NEC 104, 119 Orion 176 Panasonic 106, 107, 160, 166 Philco 103, 104, 112, 113,

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,

Sharp 103, 105, 122, 133,

Signature 2000 103, 104, 105, 113,

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

Tatung 106 Teknika Telerent 103, 121 Toshiba 110, 111, 134, 171 XR1000 121, 154 Yorx 119 Zenith 101, 142, 149, 177 Zenith Star Sight 175

136, 145, 176

103, 104, 119, 147, 184 102, 103, 129, 163, 121

104, 110, 114, 117, 119

103, 112, 113, 117, 119, 127, 128, 130, 139, 165

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

114, 119, 121, 130, 133

139

157,161,162,167,168

111, 118, 134

137, 156, 169

114, 119, 121, 130, 133

127, 128, 139

103, 112, 121, 124, 139

VCRS

Admiral 208, 261 Adventura 231 Aiwa 231 Akai 223, 238, 241 Audio Dynamics 202, 206, 218, 247 Bell & Howell 206, 247 Broksonic Canon 214 Citizen 209 Craig 212 Criterion 239 Curtis 214, 259 Mathis Daewoo 244, 246, 248, 254 Daytron 236, 246 DBX 202, 218 Emerson

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 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, Ward 231, 249 Multi Tech 239 NEC 202, 218 Optimus 208, 209, 259 Orion 233, 250 Panasonic 214, 251, 259 Pentax 215 Philco 207, 214 Philips 207, 214, 227 Pioneer 210, 215 Portland 246 Pro Scan 216, 260 Quasar 214, 259 RCA

Realistic Samsung 220, 230, 238 Sansui 239 Sanyo 206, 212, 247 Scott 204, 205, 233, 243 Sears Sharp 208, 261, 272 Shintom 239 Signature 2000 208, 214, 216, 219,

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,

221, 226, 233, 250, 255

203, 209, 221, 223, 226, 233, 235, 243, 250

202, 224, 225, 258, 263

215, 216, 220, 227, 240, 242, 244, 260 206, 208, 212, 214, 231

206, 209,211, 212, 215

231, 249, 261

237

VCR/TVS

Daewoo 148 Emerson 158 Funai 154 Goldstar 153 Hitachi 154 LXI 154 Magnavox 173, 181 Panasonic 174 RCA 179 Samsung 180 Sansui 182 Sharp 179 Sylvania 154 Symphonic 154 Zenith 153, 154, 172

CABLE/SATELLITE Set-Ups

Allegro 358, 362 Allegro A/B Switch 361 Amerkast 383 Dish Network 389 Gemini 305, 331, 338 General Electric 367 General Instrument Hamlin Jerrold 304, 307, 308, 309,

Kale Vision 335 Macom 314, 321 Magnavox 334 NSC Oak 311, 332, 342 Panasonic 313, 320 Paragon 333 Philips Pioneer 315, 343 Primstar 388 Radio Shack 362 RCA DSS 373, 394 Regal 366 Regency 329 Samsung 335 Scientific Atlanta 316, 323, 336, 364 Sony DSS 387 Sprucer 313 Standard Comp 335 Stargate 379 Texscan 339, 356, 371 Tocom 317, 318, 346 Toshiba DSS 391 Unika 348, 362 United Satellite 344 Universal 358, 362 Vid Tech 340 Video Way 349 Viewstar 354, 355, 372 Zenith 301, 353 Zenith HD Set Top 385 Zenith N/C Set Top 384, 395 Zenith Satellite 312, 328, 330, 351

LASER DISC

Denon 402, 403 Mitsubishi 403 Pioneer 402, 403, 405 Sanyo 401 Sony 404 Zenith 401

AUDIO TAPE DECKS

Denon 455 Harman/Kardon 456 JVC 457 Kenwood 450 Onkyo 458 Philips DCC 454 Pioneer 451, 478 Sony 452 Technics 454, 497 Yamaha 453

305, 306 302, 303, 345, 365, 366

310, 318, 360, 363

335, 339, 368, 369, 370

347, 350, 352, 354, 355

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 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,

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

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,

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

441

460, 461, 498, 501, 502

502, 504, 505

CM150 1-7 GA - REMOTES

SECTION 2

INSTALLERS MENU

Figure 1

1164-01/02 Micro opening

display.

1305 Micro opening display.

INSTALLER’S MENU

ACCESS

Access the Service Menu by using the remote control or the keyboard on the front of the set.

With the remote: Press and hold MENU key until user menu displays disappears, then press 9, 8, 7, 6 and ENTER. This will access the 03 H Pos item of the Service Menu.

Models with 6 button Keyboard: Press and hold Menu until User Menu display disappears. Immediately press Volume Up and Channel Down simultaneously.

Models with 10 button keyboard: Press and hold MENU until the user menu disappears. Immediately press the Adj. Right and Channel Up keys simultaneously.

NOTE: Entry into and exit from the Service Menu will

automatically unblock all parental control.

To exit Service Menu, press ENTER key. Entry into and exit from the Service Menu, will automatically un-block all parental Control.

DISPLAY

The GA Chassis uses three different microcontrollers (IC6000): 221-01164-01, 221-01164-02, or 22101305-01. When the Factory menu is accessed, the opening display screen will show the microcontroller on the top line. It will look as shown in Figure 1 or 2. The bar at the top indicates the part number of the software in the set. The bar at the bottom has a date and number. The date on the left indicates the date the module went through the factory. The number on the right indicates the module has been tested.

The first seven menu items 00 through 06 will be the same for each micro. Items 07 through the end will be different on each micro.

When Service Menu appears, it will always appear on third item H Pos. Use SELECT key to toggle through all of the adjustments.

Figure 2

Figure 3

1164-01/02 Factory mode on

opening display.

1164-01/02 MICRO 00 F MODE: (Factory Mode) Use Select key to select

item #00, which is the first item in the Service Menu, the Factory mode. This item is used by the factory when the module is being tested. In the field, this item should always be left “off”. Zero is “Off”!

When the factory mode is Off, only the first seven items in the Service Menu can be accessed. When the factory mode is set to 1, all menu items will be available. Also they will appear on the screen one at a time at the top left of the screen, as shown in Figure

3. If the factory mode is “On”, a pair of dashes will ap-

pear at the top of the Customer Set Up Menu. On other menus a number corresponding to the setting of a high lighted item will be shown. This is a quick way a technician can tell that the factory mode is on. Other unusual things also happen when the factory mode in “On”, for example, the AC power on feature is always enabled regardless of the setting of “AC On” in the Service Menu. The set will automatically come On when AC is applied. In addition, when the factory mode is “On”, the Service Menu can be accessed on 10 button key boards by pressing simultaneously the RIGHT ADJ. and CHANNEL UP buttons. On 6 button keyboards press VOLUME UP and CHANNEL DOWN buttons. Otherwise the hand control must be used to reenter the Service Menu to turn the factory mode off. The factory mode can also be turned off by adjusting the setting of the clock, or running the Auto Program feature in the customer Set Up menu.

01 Pre Px: Used to store the customer menu adjust-

ments in the non-volatile memory of the EAROM. Settings for Contrasts, Brightness, Color and Tint are stored in this manner. 0 is custom and 1 is Pre-set stored.

02 V Pos: Moves On Screen Displays vertically. Range is

0 - 24. Generally set at 10.

CM150 2-1 GA - INSTALLER MENUS

INSTALLERS MENU 221-01164-01/02 (continued)

03 H Pos: Moves On Screen Displays horizontally. Range

is 0 - 13. Generally set at 9.

04 Level: There are three positions, 0, 1 and 2. The

three different positions are used at the factory to program the module for the correct features. In order to change the level, short pins 3 and 4 together on connector 4G9 on the main module. The connector is located on the left hand side of the module just to the left of the Micro IC6000 on 19" and 20" sets. On the 25" and 27" sets it is on the left edge of the module. Use the Adjust button to change the level. Connector 4G9 is located on the left hand side of the module near the micro.

NOTE: BE CAREFUL!! IF THE WRONG PINS ARE SHORTED,

THE MODULE CAN POSSIBLY BE DAMAGED.

NOTE: BE SURE TO REMOVE THE JUMPER AFTER THE LEVEL

HAS BEEN SET.

4G9 CONNECTOR

DATA CLOCK CONTROL +5 VOLTS GROUND

1 2 3 4 5

TEST POINT

Level 0 and 2 is used for Private Label sets. Level 1 and 2 are used for Zenith sets. In the private label mode the IR code is 21 or 121.

05 Band: There are eight positions. 0 is Broadcast

fixed, 1 is CATV afc, 2 is HRC afc, 3 is ICC afc, 4 is Broadcast afc, 5 is CATV fixed, 6 is HRC fixed, and 7 is ICC fixed.

06 AC On: There are two positions, 0 is off and 1 is AC

ON. In On position set will turn on and off when AC power is applied and removed.

11 V Size: (Vertical Size) Adjusts the size of the

picture vertically. Range is 0 - 63.

12 V Phase: (Vertical Phase) Shifts the picture

vertically. Range is 0 - 7.

13 H Phase: (Horizontal Phase) Shifts the picture

horizontally. Range is 0 - 31.

14 AudLvl: (Audio Level) Sets the gain for the

Composite Audio from Video processor. Range is 0 - 63.

15 RF Agc: Range is 0 - 63. Tune in weakest channel

and adjust for a snow free picture.

16 H Afc: There are two settings 0 and 1. 17 WhComp: (White Compression) There are two

settings 0 and 1.

18 60 HzSW: (60 Hertz Switched) Range is 0 - 3. 19 PifVco: (PIF Voltage Controlled Oscillator) Range is

2 - 127.

ITEMS #20 THROUGH 24 ARE FOR B&W TRACKING 20 R Cut: Range is 0 - 254. 21 G Cut: Range is 0 - 254. 22 B Cut: Range is 0 - 254. 23 G Gain: Range is 0 - 254. 24 B Gain: Range is 0 - 254. 25 C Type: (Chassis Type) There are six selections, 0

to 5. 0 is mono, 1 is mono W/Aux, 2 is Non MTS Stereo, 3 is Non MTS W/Aux, 4 is MTS chassis and 5 is MTS chassis W/Aux.

26 Scroll: Selects the method the User menus will

appear on the screen. Scroll Off is 0.

27 6 Keys: Set to 1 for the 6 key keyboard. Set to 0

for the 10 key keyboard.

1164-01 MICROCONTROLLER 28 SpkSw: Range is 0 - 1. This item is not being used. 29 5 Jacks: Range is 0 - 1. Set to 0. 30 St & Sap: Range is 0 - 1. Set to 0.

1164-01 AND 1164-02 MICROCONTOLLER 07 Rf Bpf: (Rf Bandpass) Range is 0 - 1. 08 3.58T: 3.58 MHz trap. Range is 0 - 1. 09 RF Brt: (RF Brightness) Sets adjustment range of

the customer control, for brightness in RF mode.

1164-02 MICROCONTROLLER 28 SpkrSw: Range is 0 - 1. This item is not being

used.

29 Surf: Range is 0 - 1. This item is not being used. 30 Vcurve: Adds Speakers in Set-up menu, Zero is off.

Range is 0 - 63.

10 Aux Brt: (Auxiliary Brightness) Sets adjustment

range of the customer control, for brightness in AUX mode. Range is 0 - 63.

CM150 2-2 GA - INSTALLER MENUS

INSTALLERS MENU 221-01164-01/02 (continued)

FACTORY RECOMMENDED SETTINGS 221-01164-01

Factory Mode 0 (Blue)

ITEM RANGE 19/20" 25” 27"

00 F Mode 0-1 0 0 0 01 Pre Px 0-1 1 1 1 02 V Pos 0-24 10 7 7 03 H Pos 0-13 10 10 10 04 Level 0-2 1* 1* 1* 05 Band 0-7 0 0 0 06 AC On 1 0 0 0

Factory Mode 1 (Black)

07 RF Bpf 0-1 1 1 08 3.58T 0-1 1 1 1 09 RF Brt 0-63 32 32 32 10 Aux Brt 0-63 32 32 32 11 V. Size 0-63 36 36 36 12 V. Phase 0-7 5 2 2 13 H. Phase 0-31 19 19 18 14 Aud Lvl 0-63 46 46 46 15 RF Agc 0-63 31 31 33 16 H Afc 0-1 1 1 1 17 WhComp 0-1 0 0 0 18 60 HzSw 0-3 2 2 2 19 PifVco 0-127 31 31 31 20 R Cut 0-254 0 10 5 21 G Cut 0-254 0 10 5 22 B Cut 0-254 0 10 5 23 G Gain 0-254 90 90 90 24 B Gain 0-254 90 90 90 25 C Type 0-5 2 2 2 26 Scroll 0-1 1 1 1 27 6 Keys 0-1 1 1 1 28 SpkrSw 0-1 0 0 0 29 5 Jack 0-1 0 0 0 30 St & Sap 0-1 0 0 0

* 04 Level 0 and 1 are used for Zenith sets. Level 0 is Private Label.

CM150 2-3 GA - INSTALLER MENUS

INSTALLERS MENU 221-01164-01/02 (continued)

FACTORY RECOMMENDED SETTINGS 221-01164-02

Factory Mode 0 (Blue)

ITEM RANGE 19/20" 25” 27"

00 F Mode 0-1 0 0 0 01 Pre Px 0-1 1 1 1 02 V Pos 0-24 10 7 7 03 H Pos 0-13 10 10 10 04 Level 0-2 1* 1* 1* 05 Band 0-7 0 0 0 06 AC On 1 0 0 0

Factory Mode 1 (Black)

* 04 Level 0 and 1 are used for Zenith sets. Level 0 is Private Label.

CM150 2-4 GA - INSTALLER MENUS

INSTALLERS MENU 221-01305-01

1305 MICRO

00 F MODE: (Factory Mode) Use Select key to select

3. If the factory mode is “On”, a pair of dashes will ap-

gram feature in the customer Set Up menu.

01 Pre Px: Used to store the customer menu adjust-

ments in the non-volatile memory of the EAROM. Settings for Contrasts, Brightness, Color and Tint are stored in this manner. 0 is custom and 1 is Pre-set stored.

02 V Pos: Moves On Screen Displays vertically. Range is

0 - 24. Generally set at 10.

03 H Pos: Moves On Screen Displays horizontally. Range

is 0 - 13. Generally set at 9.

04 Level: There are three positions, 0, 1 and 2. The

NOTE: BE CAREFUL!! IF THE WRONG PINS ARE SHORTED,

THE MODULE CAN POSSIBLY BE DAMAGED.

NOTE: BE SURE TO REMOVE THE JUMPER AFTER THE LEVEL

HAS BEEN SET.

4G9 CONNECTOR

DATA CLOCK CONTROL +5 VOLTS GROUND

1 2 3 4 5

TEST POINT

Level 0 and 2 is used for Private Label sets. Level 1 and 2 are used for Zenith sets. In the private label mode the IR code is 21 or 121.

05 Band: There are eight positions. 0 is Broadcast fixed,

1 is CATV afc, 2 is HRC afc, 3 is ICC afc, 4 is Broadcast afc, 5 is CATV fixed, 6 is HRC fixed, and 7 is ICC fixed.

06 AC On: There are two positions, 0 is off and 1 is AC

ON. In On position set will turn on and off when AC power is applied and removed.

07 Rf Bpf: (RF bandpass) Range is 0 - 1. 08 3.58T: 3.58 Mhz trap. Range is 0 - 1. 09 Rf Brt: (RF Brightness) Set the adjustment range of

customer control for brightness in RF mode. Range is 0 - 63.

10 Ax Brt: (Aux Brightness) Sets adjustment range of

customer control for brightness in the AUX mode. Range is 0 - 63.

11 MaxCon: (Max Contrast) Set adjustment range of

customer control for contrast. Range is 0 - 63.

12 V. Size: (Vertical Size) Adjusts size of picture

vertically. Range is 0 - 254.

13 H. Size: (Horizontal Size) Adjusts size of picture

horizontally. Range is 0 - 254.

14 V. Phase: (Vertical Phase) Shifts picture vertically.

Range is 0 - 7.

15 H. Phase: (Horizontal Phase) shits picture verti-

cally. Range is 0 - 7.

16 AudLvl: (Audio Level) Set gain for Composite

Audio from Video processor. Range is 0 - 63.

17 RF Agc: Range is 0 - 63.

CM150 2-5 GA - INSTALLER MENUS

INSTALLERS MENU 221-01305-01 (continued)

18 H Afc: There are two setting 0 and 1. Setting is

usually 1.

19 WhComp: (White Compression) There are two

settings 0 and 1. Setting is 0.

20 60hzSw: (60 Hertz compression) There are two

settings 0 and 1. Setting is 0.

21 PifVco: (PIF Voltage Controlled Oscillator)

Range is 0 - 127.

Items # 22 through #26 are for B&W tracking 22 R Cut: Range is 0- 254. 23 G Cut: Range is 0 - 254. 24 B Cut: Range is 0 - 254. 25 G Gain: (Green Gain) Range is 0 - 254. 26 B Gain: (Blue Gain) Range is 0 - 254. 27 Scroll: Selects the method the User Menus that will

appear on the screen. Scroll Off is 1, 1 is On.

28 6 Keys: Set to 1 for the 6 button keyboard. 29 A Att: (Audio Attenuator) Range is 0 - 15. 30 A VCO: (Audio Voltage Controlled Oscillator)

Range is 0 - 63.

31 A Fltr: (Audio Filter) Range is 0 - 63. 32 Spctrl: High Frequency separation. Range is

0 - 63.

33 W Band: (Wide Band Low Frequency Separation)

Range is 0 - 63.

34 PiP Z1: Adjusts horizontal position of the insert

picture on left side.

35 PiP Y1: Adjusts vertical position of the insert

picture on left side.

36 PiP X2: Adjusts horizontal position of the insert on

right side.

37 PiP Y2: Adjust vertical position of the insert

picture on right side.

38 PiP Ras: (Picture in Picture Raster) Range is 0

- 255.

39 PiP Sw: (Pip Switch Delay) Used to center PIP

Boarder and PIP picture in the horizontal direction. Range is 0 - 15.

40 PiPLud: (PIP Luminance Delay) Used to match

Luma and Chroma of inset picture. Range is 0 - 7.

41 PIP Tof: (PIP Tint level register) Range is 0 - 63. 42 C. In OSDC: On screen dispalay internal oscillator.

Range is 0 - 1.

43 OSD FR: On screen display frame. Range is 0 - 1.

CM150 2-6 GA - INSTALLER MENUS

INSTALLERS MENU 221-01305-01 (continued)

FACTORY RECOMMENDED SETTINGS 221-01305-01

General Setting (Blue) Factory Mode 0

ITEM RANGE 25” 27"

00 F Mode 0-1 0 0 01 Pre Px 0-1 1 1 02 V Pos 0-24 14 17 03 H Pos 0-13 6 8 04 Level 0-2 0* 0* 05 Band 0-7 0** 0** 06 AC On 1 0 0

Technical Settings (Black) Factory Mode 1

07 RF Bpf 0-1 1 1 08 3.58T 0-1 1 1 09 RF Brt 0-63 32 32 10 Aux Brt 0-63 32 32 11 MaxCon 0-63 63 63 12 V. Phase 0-254 86 53 13 H. Phase 0-254 110 104 14 V. Phase 0-7 3 1 15 H. Phase 0-31 15 20 16 Aud Lvl 0-63 46 46 17 RF Agc 0-63 31 31 18 H Afc 0-1 1 1 19 WhComp 0-1 0 0 20 60hz Sw 0-3 2 2 21 PifVco 0-127 32 32

Color Temp Cool Starting Values

22 R Cut 0-254 5 5 23 G Cut 0-254 0 0 24 B Cut 0-254 10 10 25 G Gain 0-254 66 66 26 B Gain 0-254 14 14 27 Scroll 0-1 1 1 28 6 keys 0-1 1 1 29 A Att 0-1 9 9 30 A VCoc 0-15 31 31 31 A Fltr 0-63 31 31 32 Spctrl 0-63 31 31 33 W Band 0-63 31 31 34 PiP X1 0-63 7 7 35 PiP Y1 0-63 5 5 36 PiP X2 0-63 49 49 37 PiP Y2 0-63 32 32 38 PiP Ras 0-254 68 68 39 PiP Sw 0-15 8 8 40 PiP Lud 0-7 2 2 41 PiP TOF 0-63 3 3 42 C. In OSDC 0-1 0 0 43 OSD FR 0-1 0 0

CM150 2-7 GA - INSTALLER MENUS

SERVICE INFORMATION

SECTION 3

SERVICING

GA Shutdown Circuits

GA1

ICX2200

P29

DX3003

GND

FROM_RESISTOR_DIVIDER

DX3002

GENERAL INFORMATION

NOTE: 19" and 20" GA1 chassis is a line connected

chassis. When servicing chassis, use an isolation transformer to prevent possible shock hazard!! The 25" and 27" GA2 and GA3 chassis has an isolated supply.

Servicing the GA is the same as with other single board chassis. If the set is dead, check the power supply first. First the standby voltages, then the switched voltages. If the switched voltages do not appear check the power “On” circuit.

If the power supply is OK and the set will turn on, then the horizontal sweep needs to be verified next. Is the horizontal drive available from the video processor? If the sweep system does not start-up, sweep derived voltages will not be generated.

If sweep and high voltage is OK and video or audio are missing, then those circuits and the tuner need to be analyzed.

If the receiver is working but some feature or accessory is not working, check the Service Menu.

WARNING: If the power supply is operational and the

set still goes into Shutdown or shuts off, this means that the vertical sweep or X-ray protection is being activated by the micro. Check for vertical pulse at the micro (IC6000) pin 2, or the HV Shutdown Circuit. The set will not turn on again unless the micro is reset by unplugging the AC line cord.

The Vertical CRT Deflection Circuit must work in order to generate the Vertical (Pulse) Signal, if not, the Vertical Protection Circuit will be activated by the micro and the set will shutdown. In case of X-RAY protection activation, check the +130V source first and then the shutdown network. To turn it on again, reset the microcontroller or unplug the set.

If the sweep and high voltage is OK and video or audio are missing, then those circuits and the tuner need to be checked.

GA2 & GA3

ICX2200

P29

ZDX3004

FROM_RESISTOR_DIVIDER

RL1

RL2

DX3005

GND

HIGH-VOLTAGE AND X-RADIATION PROTECTION

A potential source of X-rays is the picture tube, if the high-voltage (HV) is out of specification. When the HV is operating properly, there is no X-radiation. For the GA chassis family, the HV has no adjustments. A HV shutdown circuit is used to prevent excessive HV and X-ray emissions.

THEORY OF OPERATION (SHUTDOWN CIRCUIT)

The HV shutdown circuit appears on sheet 4 and sheet 5 of the schematics for 9-1869/71, 9-1789/91 and 91996/97 respectively. The basic HV shutdown circuit is illustrated below.

This circuit basically monitors the sweep, pulse voltage derived from the sweep transformer (TX3202 pins 7 & 9 in GA 19/20”; GA1 or TX3204 pins 5 & 6 in GA 25/27”; GA2 and GA3. This voltage is rectified and applied to a

9.1 V zener diode (DX3003 in GA 19/20”; GA1 or ZDX3004 in GA 25/27”; GA2 & GA3). When the HV reaches its maximum allowed value (see table below) the zener diode conducts, the voltage on pin 29 of the video processor (ICX2200) increases until it reaches the threshold voltage of 3.5 VDC, and shuts down the TV.

If the shutdown circuit has operated, the microcontroller will prevent the TV from being turned on again, without first having to unplug and plug the AC cord to reset the microcontroller.

TIP: Make a momentary short circuit between the

OUTPUT and GND of the IC6002 (RESET CIRCUIT), this will reset the microcontroller IC6000.

NOTE: In GA 19/20” or GA1 only, the R3212 is used for

the CRT heater and the shutdown circuit. So if the video output board is unplugged from the CRT, the voltage on pin 29 of ICX 2200 will be increased, and the shut down circuit will activate. If it is required to test the module without the CRT or without the video output connected, then add a load of 9 OHMS 5% 10W WIREWOUND RESISTOR between pins 9 & 10 of the wireless socket at the video output board.

CM150 3-1 GA - SERVICING

SERVICING (continued)

(

)

HV MEASUREMENT PROCEDURE

Apply signal through the video generator, or tune the TV color receiver to crosshatch pattern. Connect an accurate HV meter between the picture tube anode and chassis ground. Access Video Menu and adjust Brightness and Contrast controls for minimum screen luminance. Wait until the Video Menu or display disappear. Read HV meter.

The HV maximum value for each chassis is specified in the following table:

SCREEN B+ VDC HV NOM HV MAX

SIZE

19 130 +/- 0.8 26.5 27 20 130 +/- 0.8 26.5 27 25 124 +/- 0.5 28.5 29 27 124 +/- 0.5 28.5 29

0 BEAM

COMPONENT LEVEL REPAIR

KV KV

SERVICING THE MODULE

After a module is serviced, access the Service Menu and check that all items are set properly. When the factory mode is off only the first seven items in the Service Menu are available. Place factory mode to 1 to see all Service Menu adjustments. Be sure the factory mode is set to 0, which is Off, when the Service Menu is exited. Also make sure that item 04 LEVEL is set to match the Level as indicated on the model number sticker on the back of the set. The Level is changed by placing a short across pins 3 and 4 of connector 4G9 on the main module. Then using the remote control, bring up the Service Menu and select item 04. Press the adjust button to make a change. Be sure to remove the shorting jumper when the adjustment is completed. Confirm that item #25 is set correctly to match the set being serviced! If not, and No Audio condition will arise.When in the Private label mode, the set will only respond to IR code

121. .

SERVICING THE POWER SUPPLY GA1 19”/20”

NOTE: Use an isolation transformer when servicing 9-

1869, 1870, 1871, 1871-01 and 1950 chassis !!

STANDBY VOLTAGES Check the Standby Voltage at the following points:

POWER ON (9-1869/70/71 AND 9-1950)

Keyboard input at IC6000 pin 7 and 8 IR input at IC6000 pin 15 Power “On” output at IC6000 pin 32 Base of QX3402 power supply switching transistor (about

0.7 volts).

+5 volts IC6000 pin 27

SWITCHED VOLTAGES

Turn the set On and check the Switched voltages at the following points.

+130 volts DC at FX3402 +150 volts DC at CX3406 +180 volts DC at + of C3207

SWEEP DERIVED VOLTAGES

+5 volts DC at cathode of ZD3206 +9 volts DC at pin 3 of IC3201 +12 volts DC at + OF CX3213 +14 volts DC at + side of C3222 +25 volts DC at D3202 cathode +180 volts DC at C3207

SERVICING THE POWER SUPPLY

GA2 & GA3 25”/27” 9-1789/90/91 & 9-1831 Standby Voltages +150 volts DC at RX3404 +123 volts DC at CX3420 +15 volts DC at emitter Q3403 +5 volts DC at cathode of ZD3401

SWITCHED VOLTAGES

Turn set On and check the Switched voltages at the following points:

+5 volts DC at cathode of ZD3402 +9 volts DC at pin 3 of IC3431 +15 volts DC at collector of Q3404 +15 volts DC at collector of Q3403

+13 volts DC at CX3411 +12 volts DC at pin 1 of ICX3402

SWEEP DERIVED VOLTAGES

+25 volts DC at RX3242

+5 volts DC at pin 3 of ICX3402

CM150 3-2 GA - SERVICING

SERVICING (continued)

+35 volts DC at CX3272 +215 volts DC at junction CX3296 and RX3277 CRT filament at pins 1 and 2 of connector 2F5

VIDEO PROCESSOR ICX2200

Key Operating Signals: Composite Video out at pin 47 Video in at pin 37 Luminance in pin 43 Chroma in pin 45 Composite Audio out at pin 2 Horizontal Drive at pin 32 Vertical Drive at pin 24 Video Output Blue at 2C5 pin 3 Video Output Green at 2C5 pin 2 Video Output Red at 2C5 pin 1 B+ 9 volts pins 9, 46 and 48 Serial Data, Serial Clock pins 27 and 28

+25 volts pin 6 Vertical out pin 2

HORIZONTAL CIRCUIT

Horizontal drive to base of Q3201 predriver Driver transformer output base of Q3202 Shutdown voltage anode ZFX3004

SERVICE ADJUSTMENTS (Mechanical)

1. Video Gain (19"/20" Models) Adjusts R9738 for 1

VERTICAL CIRCUIT

Vertical drive pulse pin 4

CM150 3-3 GA - SERVICING

SERVICE ADJUSTMENTS

SERVICING (continued)

volt P-P at emitter of Q9706.

2. Audio Balance (19"/20" Models) Adjusts R9745 for equal output at collectors of Q9701 and Q9703.

3. HORIZONTAL WIDTH (25"/27" Models) Adjusts R3249 for 1/2" overscan on both sides of the picture.

FOCUS ADJUSTMENT

Connect a color bar pattern to the receiver and adjust the user controls for a good picture. Adjust the Focus control, then push the menu button to video menu then proceed until there is no distortion in the letters of the menu.

GA1/GA2 RGB CUTOFF (1164 Micro)

The G2 control must be adjusted before RGB drive.

1. If the main module or CRT has been replaced, set items #23 G GAIN and #24 B GAIN, in the Service

GA1 GA2

Tube Size 19” 20” 25” 27” Customer Contrast 0 0 0 0 RF Bright/Aux Bright 36 36 26 28 Customer Brightness 31 31 31 31 Red Cutoff 0 0 10 5 Green Cutoff 0 0 10 5 Blue Cutoff 0 0 10 5 Green Gain 90 90 90 90 Blue Gain 90 90 90 90

Menu, to the default setting for the correct screen size as listed in the Service Menu (see above table).

2. Set color level to minimum and Tint to midrange.

3. Connect the output of an NTSC generator to the antenna input of the receiver. Set the generator to a pure white signal, chroma off.

4. Access the Service menu to gain access to the cutoff adjustments, (Factory mode item 00 must be set to 1 to gain access to these adjustments).

5. Set items 22 R Cut, 23 G Cut and 24 B. Cut to the values shown in the above table.

6. Carefully observe which color is predominant on the CRT - DO NOT adjust the cutoff control for this color. Adjust the other two cutoff controls for the best white screen display.

7. Set the generator to a color bar patter and turn the chroma off. Check that the set displays a good gray

scale from black to white. If black level is too high readjust the item #9 RF Brightness.

8. Return the color level control to normal.

GA3 OF RGB CUTOFF (1305 Micro)

The G2 control must be adjusted before RGB drive.

1. If the main module or CRT has been replaced, select

GA3

Tube Size 25” 27”

Customer Contrast 0 0 RF Bright/Aux Bright 40 40 Customer Brightness 32 32 Color Temp Cool Cool Red Cut 1 15 15 Green Cut 1 8 5 Blue Cut 1 12 12 Green Gain 1 95 100 Blue Gain 1 70 80 Color Temp Warm Warm Red Cut 2 15 16 Green Cut 2 10 8 Blue Cut 2 17 16 Green Gain 2 70 75 Blue Gain 2 25 32

“Cool” in the user video menu under Color Temp. Then set items #25 Gain 1 (Green gain cool) and #26 B Gain 1 (Blue gain cool), in the Service Menu to the default setting for the correct screen size as listed in the Service Menu (see table above). Set Color level to minimum and Tint to mid range.

2. Connect the output of an NTSC generator to the antenna input of the receiver. Set the generator to the Pure white signal, chroma off.

3. Access the Service Menu to gain access to the cutoff adjustments, (Factory mode item 00 must be set to 1 to gain access to these adjustments).

4. Set items 22 R Cut, 23 G Cut, 24 B cut to the values shown in the table.

5. Carefully observe which color is predominant on the CRT. DO NOT adjust the cutoff control of this color. Adjust the other two cutoff controls for the best white screen display.

6. Set the generator to a color bar pattern and turn

CM150 3-4 GA - SERVICING

SERVICING (continued)

the chroma Off. Check that the set displays a good gray scale from black to white. If black level is too high, readjust the item #9 RF Brightness.

7. Return the color level control to preset.

8. Select “Warm” in the user video menu under Color Temp. Then adjust items 22 R Cut, 23 G Cut, 24 B Cut, 25 G Gain 2 and 26 B Gain 2 according to the following formulas:

R Cut2 Warm = R Cut 1 Cool +3 G Cut2 Warm = G Cut 1 Cool +3 B Cut2 Warm = B Cut 1 Cool +4 G Gain2 Warm = G Gain 1 Cool -25 B Gain2 Warm = B Gain Cool -48

9. Select “Cool” in the user video menu under Color

Temp.

CM150 3-5 GA - SERVICING

SERVICING (continued)

PURITY & CONVERGENCE SETUP PROCEDURE

PRELIMINARY SETUP

1. Allow receiver to warm up for 15 to 20 minutes.

2. Degauss receiver.

3. Connect crosshatch generator to the receiver and “rough in” the static (center) convergence.

Follow Convergence Status.

4. Adjust for best focus.

PURITY ADJUSTMENT

1. Purity tab positioning Set the 2 pole purity tab together at 3 or 9 o’ clock

positions and the 4 and 6 pole purity tabs together at 12 of 6 o’ clock positions.

2. Move yoke to maximum forward funnel position.

3. Now switch crosshatch generator to a red field.

4. Pull yoke towards rear of CRT neck centered or until red raster is displayed.

5. If red raster is not displayed as a pure red field, adjust the 2 pole purity tabs until a pure field is obtained.

CONVERGENCE ADJUSTMENT

1. Release locking assembly

2. Connect crosshatch generator to the receiver and adjust static (center) convergence as follows:

a.Adjust the 4 pole static control by moving the two

tabs separately to converge red and blue lines horizontally. Move the two tabs together around neck of CRT in a 45º arc) from the top dead center position to converge red and blue lines vertically.

b. After the 4 pole control has been adjusted to super-

impose the red and blue lines on top of one another. Use the 6 pole static adjustment to place converged red and blue lines over the green line. Move the two tabs together around neck of CRT (in a 30º arc) from the top dead center position to move the lines vertically. Adjusting the two tabs separately will move converged beam to the left or right. Using a cross hatch generator capable or producing individual fields, adjust generator to produce a red field. Use purity tabs to center a red stripe.

6. Check for proper yoke tilt setting.

Wedges’ Adhes ive Tape (3)

Deflection Yoke

Purity & Convergence Magnet Assembly Unit

4 Pole

Yoke’s Glass Cloth Tape

Rubber Wedges (3)

6 Pole

Purity Magnet

CRT Ring Location Purity Adjust Tabs Beam Movement for Convergence

Ring

Pairs

6 Pole

Convergence

R&B over G

4 Pole

Convergence

R over B

Rotation direction of Both Tabs

Opposite

Same

Opposite

Same

Movement of Red and Blue Beams

B B

R R

CM150 3-6 GA - SERVICING

SERVICING (continued)

VERTICAL-TILT WEDGE ADJUSTMENT

The vertical lines at 6 and 12 o’clock are converged by vertically tilting the yoke and inserting a wedge at the top of the yoke until it is firmly seated between the CRT glass and the horizontal coils.

HORIZONTAL-TILT WEDGE ADJUSTMENT

The vertical lines at 3 o’clock and 9 o’clock are converged by horizontally tilting the yoke and inserting a wedge. Adjust first at 4 or 8 o’clock, whichever has the larger space, until the wedge is firmly seated between the CRT glass and yoke coils. Then, insert the 3rd wedge in the remaining horizontal tilt position until it is firmly seated between the CRT glass and yoke coils. Convergence at 3 and 9 o’clock should be maintained during this operation.

When the 3 wedges are firmly installed and positioned for acceptable convergence, lock the wedges in place by applying a 2.5 inches long strip of tape across the tabs of each wedge, firmly against the CRT glass. The CRT glass surface should be clean and free of dust and other foreign material.

UNUSUAL TILT CASE

There may be some instances where the picture tube and yoke will require vertical tilt in the opposite (up) direction to obtain convergence. In such cases, insert the vertical tilt wedge at the bottom (6 o’clock) position. Follow through on the horizontal tilt adjustment by using the 2 and 10 o’clock positions and secure each wedge with a piece of tape, as described above.

IMPROVING CRT CORNER PURITY

CRTs that display corner purity problems even after following the service procedures can be modified with a picture correction kit (P/N 949-50). The purity can be improved by placing a picture-correction magnet (included in the kit) on the CRT funnel. Refer to the following modification steps and illustration to place the magnet properly. Fully degauss the CRT before installing correction magnets.

MODIFICATION

1. Place the magnet on the CRT funnel as shown in the figure displayed below, in the quadrant exhibiting impurity.

2. Rotate the magnet in place to the position shown for best purity.

3. Place a piece of 1/2" by 2" long Fiberglass tape over the magnet to hold it in place.

4. Degauss the CRT once magnet is in place to insure that the magnet is not over the internal magnet shield.

NOTE: If the magnet is placed over the internal

magnet shield, any apparent purity correction will disappear after degaussing. Reposition the correction magnet off the internal shield and degauss again.

2" To 3"

MAGNET

Clamp and Scr ew

6 Pole Magnets

2 Pole Magnets

4 Pole Magnets

CM150 3-7 GA - SERVICING

IC DESCRIPTIONS

IC6001

4K Bit Serial EEPROM

221-00745-04

Pin Configuration

9&&

$

$





AT24C04





AT M E L



$

*1'

CM150 3-8 GA - IC DESCRIPTIONS



6&/



6'$



IC DESCRIPTIONS (continued)

Pin Configuration

221-00907

Pilot in

Pilot out

Loop filter

Composite input

Ground

De-emphasis adjust

Pilot detector

Resonator

Stereo/mono select

Stereo presence

VCC

BPF upper corner

1/2 VCC

1/2 VCC bypass

L-R output

L-R input

L-R gain adjust

CM150 3-9 GA - IC DESCRIPTIONS

BPF low er c o rn e r

Det. bypass

Det. time constant

Left output

Right output

L OUT

R OUT

IC DESCRIPTIONS (continued)

Pin Definition

221-00981

Test Circuit

CM150 3-10 GA - IC DESCRIPTIONS

IC DESCRIPTIONS (continued)

IC6000

CM150 3-11 GA - IC DESCRIPTIONS

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