JVC TM-H150CG/E, TM-H150CG/U Service Manual

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JVC

SERVICE MANUAL

COLOR VIDEO MONITOR

YA06820043

TM-H150CG/E,

TM-H150CG

BASIC CHASSIS

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

5 TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-38

No.YA068

2004/3

SPECIFICATION

Item Content

Dimensions (W × H × D) 36cm×31cm 41.8cm (14-1/4" ×12-1/4" ×16-1/2")

Mass 16kg (35.2lbs)

Color System PAL / NTSC 3.58

Scanning Frequency H: 15.734 kHz (NTSC), 15.625 kHz (PAL)

V: 59.94 Hz (NTSC), 50Hz (PAL)

Power Requirements AC 220V-240V, 50Hz/60Hz [TM-H150CG/E]

AC 120V, 50Hz/60Hz [TM-H150CG/U]

High Voltage 23.7kV~26.3kV [at zero beam current]

Power Consumption 0.8A [TM-H150CG/E]

1.2A [TM-H150CG/U]

Operation Temperature 5°C ~40°C (41°F ~104°F)

Operation Humidity 20%~80% (non-condensing)

Horizontal Resolution 750TV line or more

Picture Tube 15inch square type, in-line gun, trio-dot type, dot pitch 0.27mm

Effective Screen Size 35.6cm (Diagonal) / 28.55cm×21.4cm (W×H)

(14" / 11-3/16" ×8-3/8" )

High Voltage 23.7kV~26.3kV [at zero beam current]

Audio Power Output 1W (Monaural)

Speaker 8cm round × 1, 8Ω

Input / Output Terminals

Remote Control Input D-sub 15pin (3row) connector×1

Card Slot (option) COMPONENT / RGB input card (IF-C01COMG available)

VIDEO A Composite video : 1V(p-p), 75Ω, negative sync, BNC connector×2

[Bridge connection possible with automatic termination]

VIDEO B Composite video : 1V(p-p), 75Ω, negative sync, BNC connector×2

[Bridge connection possible with automatic termination]

Y/C:Mini-Din 4-pin connector × 2

[Bridge connection possible with automatic termination]

Y:1V(p-p), 75 Ω C:[NTSC] burst 0.286V(p-p), 75 Ω [PAL] burst 0.3V(p-p), 75 Ω

AUDIO A 500mV(rms), high impedance, RCA pin jack×2

[Bridge connection possible]

AUDIO B 500mV(rms), high impedance, RCA pin jack×2

[Bridge connection possible]

[MAKE or TRIGGER can be switched in MENU]

SDI input card (IF-C01SDG, IF-C21SDG, IF-C51SDG available)

Design & specifications are subject to change without notice.

1-2 (No.YA068)

SECTION 1

PRECAUTION

1.1 SAFETY PRECAUTIONS [EXCEPT FOR US and UK]

(1) The design of this product contains special hardware,

many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Service should be performed by qualified personnel only.

(2) Alterations of the design or circuitry of the products should

not be made. Any design alterations or additions will void the manufacturer's warranty and will further relieve the manufacturer of responsibility for personal injury or property damage resulting therefrom.

(3) Many electrical and mechanical parts in the products have

special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the parts list of Service manual. Electrical components

having such features are identified by shading on the schematics and by ( ) on the parts list in Service manual. The use of a substitute replacement which does

not have the same safety characteristics as the recommended replacement part shown in the parts list of Service manual may cause shock, fire, or other hazards.

(4) Don't short between the LIVE side ground and

ISOLATED (NEUTRAL) side ground or EARTH side ground when repairing.

Some model's power circuit is partly different in the GND. The difference of the GND is shown by the LIVE : ( ) side GND, the ISOLATED (NEUTRAL) : ( ) side GND and EARTH : ( ) side GND. Don't short between the LIVE side GND and ISOLATED (NEUTRAL) side GND or EARTH side GND and never measure the LIVE side GND and ISOLATED (NEUTRAL) side GND or EARTH side GND at the same time with a measuring apparatus (oscilloscope etc.). If above note will not be kept, a fuse or any parts will be broken.

(5) If any repair has been made to the chassis, it is

recommended that the B1 setting should be checked or adjusted (See ADJUSTMENT OF B1 POWER SUPPLY).

(6) The high voltage applied to the picture tube must conform

with that specified in Service manual. Excessive high voltage can cause an increase in X-Ray emission, arcing and possible component damage, therefore operation under excessive high voltage conditions should be kept to a minimum, or should be prevented. If severe arcing occurs, remove the AC power immediately and determine the cause by visual inspection (incorrect installation, cracked or melted high voltage harness, poor soldering, etc.). To maintain the proper minimum level of soft X-Ray emission, components in the high voltage circuitry including the picture tube must be the exact replacements or alternatives approved by the manufacturer of the complete product.

(7) Do not check high voltage by drawing an arc. Use a high

voltage meter or a high voltage probe with a VTVM. Discharge the picture tube before attempting meter connection, by connecting a clip lead to the ground frame

and connecting the other end of the lead through a 10kΩ

2W resistor to the anode button.

(8) When service is required, observe the original lead dress.

Extra precaution should be given to assure correct lead dress in the high voltage circuit area. Where a short circuit has occurred, those components that indicate evidence of overheating should be replaced. Always use the manufacturer's replacement components.

(9) Isolation Check (Safety for Electrical Shock Hazard)

After re-assembling the product, always perform an isolation check on the exposed metal parts of the cabinet (antenna terminals, video/audio input and output terminals, Control knobs, metal cabinet, screw heads, earphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.

a) Dielectric Strength Test

The isolation between the AC primary circuit and all metal parts exposed to the user, particularly any exposed metal part having a return path to the chassis should withstand a voltage of 3000V AC (r.m.s.) for a period of one second. (. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliance rated up to 120V, and 3000V AC (r.m.s.) to an appliance rated 200V or more, for a period of one second.) This method of test requires a test equipment not generally found in the service trade.

b) Leakage Current Check

Plug the AC line cord directly into the AC outlet (do not use a line isolation transformer during this check.). Using a "Leakage Current Tester", measure the leakage current from each exposed metal part of the cabinet, particularly any exposed metal part having a return path to the chassis, to a known good earth ground (water pipe, etc.). Any leakage current must not exceed 0.5mA AC (r.m.s.). However, in tropical area, this must not exceed 0.2mA AC (r.m.s.).

Alternate Check Method

Plug the AC line cord directly into the AC outlet (do not use a line isolation transformer during this check.). Use

an AC voltmeter having 1000Ω per volt or more sensitivity in the following manner. Connect a 1500Ω 10W resistor paralleled by a 0.15µF AC-type capacitor

between an exposed metal part and a known good earth ground (water pipe, etc.). Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Any voltage measured must not exceed 0.75V AC (r.m.s.). This corresponds to

0.5mA AC (r.m.s.). However, in tropical area, this must not exceed 0.3V AC (r.m.s.). This corresponds to 0.2mA AC (r.m.s.).

AC VOLTMETER (HAVING 1000 /V, OR MORE SENSITIVITY)

0.15 F AC-TYPE

PLACE THIS PROBE

1500 10W

GOOD EARTH GROUND

ON EACH EXPOSED ME TAL PAR T

(No.YA068)1-3

1.2 SAFETY PRECAUTIONS [FOR UK]

(1) The design of this product contains special hardware and many circuits and components specially for safety purposes. For

continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Service should be performed by qualified personnel only.

(2) Alterations of the design or circuitry of the product should not be made. Any design alterations or additions will void the

manufacturer's warranty and will further relieve the manufacturer of responsibility for personal injury or property damage resulting therefrom.

(3) Many electrical and mechanical parts in the product have special safety-related characteristics. These characteristics are often

not evident from visual inspection nor can the protection afforded by them necessary be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement part shown in the Parts List of Service Manual may cause shock, fire, or other hazards.

(4) The leads in the products are routed and dressed with ties, clamps, tubing’s, barriers and the like to be separated from live parts,

high temperature parts, moving parts and / or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after re-assembling.

WARNING

(1) The equipment has been designed and manufactured to meet international safety standards. (2) It is the legal responsibility of the repairer to ensure that these safety standards are maintained. (3) Repairs must be made in accordance with the relevant safety standards. (4) It is essential that safety critical components are replaced by approved parts. (5) If mains voltage selector is provided, check setting for local voltage.

1-4 (No.YA068)

1.3 SAFETY PRECAUTIONS [FOR US]

(1) The design of this product contains special hardware, many

circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Service should be performed by qualified personnel only.

(2) Alterations of the design or circuitry of the products should not be

made. Any design alterations or additions will void the manufacturer's warranty and will further relieve the manufacturer of responsibility for personal injury or property damage resulting therefrom.

(3) Many electrical and mechanical parts in the products have special

safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the parts list of Service manual. Electrical components having such features are

identified by shading on the schematics and by ( ) on the parts list in Service manual. The use of a substitute replacement

which does not have the same safety characteristics as the recommended replacement part shown in the parts list of Service manual may cause shock, fire, or other hazards.

(4) Use isolation transformer when hot chassis.

The chassis and any sub-chassis contained in some products are connected to one side of the AC power line. An isolation transformer of adequate capacity should be inserted between the product and the AC power supply point while performing any service on some products when the HOT chassis is exposed.

(5) Don't short between the LIVE side ground and ISOLATED

(NEUTRAL) side ground or EARTH side ground when repairing. Some model's power circuit is partly different in the GND. The difference of the GND is shown by the LIVE : ( ) side GND, the ISOLATED (NEUTRAL) : ( ) side GND and EARTH : ( ) side GND. Don't short between the LIVE side GND and ISOLATED (NEUTRAL) side GND or EARTH side GND and never measure the LIVE side GND and ISOLATED (NEUTRAL) side GND or EARTH side GND at the same time with a measuring apparatus (oscilloscope etc.). If above note will not be kept, a fuse or any parts will be broken.

(6) If any repair has been made to the chassis, it is recommended that

the B1 setting should be checked or adjusted (See ADJUSTMENT OF B1 POWER SUPPLY).

(7) The high voltage applied to the picture tube must conform with that

specified in Service manual. Excessive high voltage can cause an increase in X-Ray emission, arcing and possible component damage, therefore operation under excessive high voltage conditions should be kept to a minimum, or should be prevented. If severe arcing occurs, remove the AC power immediately and determine the cause by visual inspection (incorrect installation, cracked or melted high voltage harness, poor soldering, etc.). To maintain the proper minimum level of soft X-Ray emission, components in the high voltage circuitry including the picture tube must be the exact replacements or alternatives approved by the manufacturer of the complete product.

(8) Do not check high voltage by drawing an arc. Use a high voltage

meter or a high voltage probe with a VTVM. Discharge the picture tube before attempting meter connection, by connecting a clip lead to the ground frame and connecting the other end of the lead through a 10k

(9) When service is required, observe the original lead dress. Extra

precaution should be given to assure correct lead dress in the high voltage circuit area. Where a short circuit has occurred, those components that indicate evidence of overheating should be replaced. Always use the manufacturer's replacement components.

Ω 2W resistor to the anode button.

...1..

(10) Isolation Check (Safety for Electrical Shock Hazard)

a) Dielectric Strength Test

The isolation between the AC primary circuit and all metal parts exposed to the user, particularly any exposed metal part having a return path to the chassis should withstand a voltage of 3000V AC

(r.m.s.) for a period of one second. (. . . . Withstand a voltage of

1100V AC (r.m.s.) to an appliance rated up to 120V, and 3000V AC (r.m.s.) to an appliance rated 200V or more, for a period of one second.) This method of test requires a test equipment not generally found in the service trade.

b) Leakage Current Check

Alternate Check Method

Plug the AC line cord directly into the AC outlet (do not use a line isolation transformer during this check.). Use an AC voltmeter having 1000 following manner. Connect a 1500

µF AC-type capacitor between an exposed metal part

a 0.15 and a known good earth ground (water pipe, etc.). Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Any voltage measured must not exceed 0.75V AC (r.m.s.). This corresponds to 0.5mA AC (r.m.s.). However, in tropical area, this must not exceed 0.3V AC (r.m.s.). This corresponds to 0.2mA AC (r.m.s.).

(11) High voltage hold down circuit check.

GOOD EARTH GROUND

After repair of the high voltage hold down circuit, this circuit shall be checked to operate correctly.See item "How to check the high voltage hold down circuit".

This mark shows a fast operating fuse, the letters indicated below show the rating.

I 11

A V

Ω per volt or more sensitivity in the

Ω 10W resistor paralleled by

AC VOLTMETER (HAVING 1000 /V, OR MORE SENSITIVITY)

0.15 F AC-TYPE

PLACE THIS PROBE

1500 10W

ON EACH EXPOSED ME TAL PA RT

POWER CORD REPLACEMENT WARNING.

Connecting the white line side of power cord to "WHT" character side.

PWB

White line side

~d±JD

WHT

(No.YA068)1-5

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 FEATURES

• High-resolution full square CRT is adopted.

• It can respond to both NTSC and PAL signal system. The incoming signal was discriminated and the automatic selection function that changes the mode automatically is adopted.

• In intelligible adoption of OSD, a menu is chosen or a user's original setup can be performed easily. The buttons which were easy to use for a whole surface panel, and was put in order can adjust functions, such as CONTRAST, BRIGHT, CHROMA, and PHASE (NTSC), easily. Moreover, the selected level is temporarily displayed on a screen.

• The metal cabinet is adopted which cannot be easily influenced of magnetic and strong.

• Two composite videos and one Y/C input are equipped, and bridge connection is possible respectively.

• With the OSD menu, the aspect ratio of a screen can be chosen as either 4:3 or 16:9.

• The remote terminal whose change of the aspect ratio (4:3 or 16:9) is enabled by remote control is equipped.

• The remote terminal whose change of the input (input A or B) is enabled by remote control is equipped.

2.2 FUNCTION

FRONT PANEL & CONTROL

1 2 34 5 10 1196 7 8

REAR TERMINAL

REMOTE

MAKE/

TRIGGER

CHROMA/PHASE button

CONTRAST/BRIGHT button

VOLUME/SELECT(+/-) buttons

MENU button

UNDER SCAN button

COLOR OFF button

SLOT

REMOTE

MAKE/ TRIGGER

POWER

BLUE CHECK button

ASPECT button

INPUT SELECT buttons

Input A/B, C/D (slot)

Power lamp

Power (Stand-by) button

A B

D D D D

L__ INPl/TSELECT_____J

C~D

VIDEO A (IN, OUT) terminal

VIDEO B (IN, OUT) terminal

VIDEO B (Y/C IN, Y/C OUT) terminal

AUDIO A (IN, OUT) terminal

AUDIO B (IN, OUT) terminal

Input card slot (Component/RGB signal)

REMOTE (External control) terminal

Main power switch

AC inlet

1-6 (No.YA068)

SECTION 3

DISASSEMBLY

3.1 DISASSEMBLY PROCEDURE

CAUTION

Even if the power switch is turned off, some parts in this unit are alive. Be sure to disconnect the power plug from the AC outlet before disassembly and reassembly.

3.1.1 REMOVING THE TOP COVER

(1) Remove the 8 screws [A] as shown in Fig.4. (2) Slightly spread the bottom of the TOP COVER (3) Shift the TOP COVER rearward and raise it upward to

remove it.

3.1.2 REMOVING THE REAR PANEL

• Remove the TOP COVER. (1) Remove the 8 screws [B] as shown in Fig.4. (2) Remove the 1 screw [C] as shown in Fig.4. (3) As shown in Fig.1, lift the rear panel and remove the claw

[K] from the terminal bracket.

(4) Shift the top portion of the REAR PANEL slightly rearward

and raise it upward to remove it.

3.1.3 REMOVING THE TERMINAL BRACKET

• Remove the TOP COVER.

• Remove the REAR PANEL. (1) Remove the 1 screw [D] as shown in Fig.4. (2) Remove the 5 screw [E] as shown in Fig.4. (3) Remove the 1 screws [F] and [G] as shown in Fig.4. (4) Remove the 1screw [H] as shown in Fig.4. (5) Remove the 2 hexagonal screws [J] as shown in Fig.4. (6) Pull the PW connector out from the MAIN PWB, connected

between the MAIN POWER SWITCH and MAIN PWB.

(7) As shown in Fig.2, lift the SLOT HOLDER slightly, and

remove the 2 claws [L] attached SLOT HOLDER with the TERMINAL BRACKET.

(8) As shown in Fig.3, raise the claw [M] positioned back side

of the CHASSIS BASE, and lift the TERMINAL BRACKET from the CHASSIS BASE.

(9) Slightly shift the TERMINAL BRACKET rearward and raise

it upward to remove it.

REAR PANEL

TERMINAL BRACKET

Fig.1

Fig.2

SLOT HOLDER

TERMINAL BRACKET

CHASSIS BASE

MAIN PWB

Fig.3

(No.YA068)1-7

FRONT PANEL

CRT

SPEAKER

LANDING COIL

CRT SOCKET PWB

( x 2)

FRONT

DEG. COIL

CONTROL PWB

CHASSIS BASE

MAIN PWB

( x 1) ( x 1)

SIGNAL PWB

( x 4)

SLOT PWB

TOP COVER

SUB DEF.PWB

FBT

TERMINAL BRACKET

( x 1)

MAIN POWER SWITCH

AC INLET

EARTH WIRE

( x 2)

( x 1)

MAIN POWER SWITCH

( x 4)

EARTH WIRE

PW CONNECTOR

AC INLET

( x 2)

BOTTOM COVER

SLOT HOLDER

P N

( x 4)

( x 2)

1-8 (No.YA068)

Fig.2

Fig.4

Fig.3

REAR PANEL

Fig.1

( x 5)

POWER CORD

( x 1)

( x 8)

3.1.4 REMOVING THE SLOT HOLDER AND SLOT PWB

• Remove the TOP COVER.

• Remove the REAR PANEL.

• Remove the TERMINAL BRACKET. (1) Detach the connector connected SLOT PWB and SIGNAL

PWB, then remove the SLOT PWB with SLOT HOLDER. (2) Remove the 4 screws [R] as shown in Fig.4. (3) Then remove the SLOT PWB from SLOT HOLDER.

3.1.5 REMOVING THE CHASSIS BASE

• Remove the TOP COVER.

• Remove the REAR PANEL.

• Remove the TERMINAL BRACKET. (1) Fall the unit down side ways as able to see the bottom side. (2) Lift the back side of the CHASSIS BASE slightly, and

separate it from BOTTOM COVER.

(3) Raise the 2 claws positioned bottom of the CHASSIS

BASE, and detach the CHASSIS BASE from BOTTOM COVER.

(4) Then pull the CHASSIS BASE out to rearward.

3.1.6 REMOVING THE BOTTOM COVER

• Remove the TOP COVER.

• Remove the REAR PANEL.

• Remove the TERMINAL BRACKET.

• Remove the CHASSIS BASE. (1) Set the CRT front surface downward, and stand the bottom

cover to facing it toward you. At this time, care must be exercised not to damage the front

panel and CRT surface. (2) Remove the 4 screws [N] as shown in Fig.4. (3) Remove the 2 screws [P] as shown in Fig.4. (4) While spreading the BOTTOM COVER to the bottom side,

pull it out to rearward to remove it.

3.1.8 CHECKING THE PW BOARD

To check the PW board from back side.

(1) As shown in Fig.5, place the unit for service. (2) Erect the chassis base vertically so that you can easily

check the PW board from back side.

Example of placement for SERVICE

INSULATOR (Card Board etc.)

TERMINAL BRACKET

SIGNAL PWB

STAND

Fig.5

CAUTION

• Before turning on power, make sure that the earth wire properly connected to the TERMINAL BRACKET, which is attached the main power switch and AC inlet. (Fig.6)

• And make sure that the CRT earth wire and the other connectors are properly connected.

• When erecting the CHASSIS BASE, be careful so that there will be no contacting with the other PW board.

• Be careful while erecting the PW board, because easily fall down.

PLUG

MAIN PWB

3.1.7 REMOVING THE SPEAKER

• Remove the TOP COVER. (1) Slightly spread the claws of the speaker holder. (2) Pull up the SPEAKER to remove it.

TO MAIN PWB ( E2 )

TERMINAL BRACKET

POWER SW.

AC INLET

EARTH WIRE LUG

CORE FILTER

EARTH PLUG

Fig.6

3.1.9 WIRE CLAMPING AND CABLE TYING

(1) Be sure to clamp the wire. (2) Never remove the cable tie used for tying the wires

together. Should it be inadvertently removed, be sure to tie the wires with a new cable tie.

(No.YA068)1-9

3.2 MEMORY IC REPLACEMENT

3.2.1 MEMORY IC

This model uses memory IC. In the memory IC, there are memorized data for correctly operating for the video-chroma, deflection and the other control circuits. When replacing memory IC, be sure to use the IC written with the initial values of data.

3.2.2 MEMORY IC REPLACEMENT PROCEDURE

1. Power off

Turn the power off and unplug the power plug from the AC outlet.

2. Replace IC

Be sure to use the memory IC written with the initial setting data.

3. Power on

Connect the power plug into the AC outlet and turn the power on.

4. Check and set SET-UP MENU items

(1) Press the [MENU] button and the [CHROMA /PHASE]

button simultaneously. (2) The < SET-UP MENU > screen (Fig. 1) will be displayed. (3) Check the setting value of the each item of the < SET-UP

MENU >. If value is different, select it and set the correct

value. (4) Press the [MENU] button, and return to the normal

screen.

5. Check and set MENU items

Press the [MENU] button and check the setting value of the each item. If the value is different, select the item and set the correct value.

6. Adjust the front control items

Adjust the CHROMA, PHASE, CONTRAST and BRIGHT. Not all items can be adjusted as expected if the signal has not been input correctly in the adjustments.

<SET-UP MENU>

< SET-UP MENU >

PICTURE SUB ADJ.

H.POSITION : 00

V.POSITION : 00

WHITE BALANCE

CONTROL LO CK : OFF

STATUS DISPLAY : ON

REMOTE SYSTEM : MAKE

INPUT REMOTE : A-D

EXIT

Fig.1

CURSOR

Point out the current adjusting item. Operate with the [CHROMA/PHASE] and [CONTRAST/BRIGHT] button.

SETTING ITEM

The items of <SET-UPMENU>.

SETTING VALUE

Adjust each item of <SET-UP MENU> with the [VOLUME/SELECT (+/-)].

FUNCTION DISPLAY

When you move the cursor to select the item, the function display changes the selected item.

OPERATION BUTTON

In the SERVICE MENU, the original button operation by the front panel replaced with the displayed function.

7. Confirm the items of SERVICE MENU

Confirm the each item of the SERVICE MENU. Refer to the corresponding page to operate the SERVICE MENU.

1-10 (No.YA068)

< BLOCK SELECT >

SIGNAL BLOCK WHITE BALANCE BLOCK DEFLECTION BLOCK CONTROL BLOCK

SIG W/B DEF

CTRL

DODOO

EXIT

3.2.3 FACTORY SETTING VALUE (USER MODE)

 INTIAL SETTING VALUE OF THE SET-UP MENU

Setting item Setting content / Range Initial setting value

CONTRAST -10 ~ 00 ~ +10 00

PICTURE SUB ADJ.

H. POSITION -05 ~ +05 00

V. POSITION -05 ~ +05 00

WHITE BALANCE

CONTROL LOCK OFF

STATUS DISPLAY ON

REMOTE SYSTEM MAKE

INPUT REMOTE A-D

 INTIAL SETTING VALUE OF THE MENU

Setting item Setting content / Range Initial setting value

APERTURE 00 ~ +40 00

ADJ. BAR POSI LOWER

COLOR TEMP 6500

COLOR SYSTEM AUTO

RUSH DELA STD.

 INTIAL SETTING VALUE OF FRONT PANEL CONTROLS

BRIGHT -10 ~ 00 ~ +10 00

CHROMA -10 ~ 00 ~ +10 00

PHASE (NTSC) -10 ~ 00 ~ +10 00

CUTOFF (R / G / B) -20 ~ +20 00

DRIVE (R / B) -20 ~ +20 00

ON OFF

MAKE TRG.

A-D A/B

LOWER UPPER

9300 6500

AUTO NTSC AUTO PAL

- - -

STD. SLOW

i i

Control item

(Front panel)

INPUT SELECT A

ASPECT OFF

BLUE CHECK OFF

COLOR OFF OFF

UNDER SCAN OFF

MENU OFF

VOLUME 20

CONTRAST 00

BRIGHT 00

CHROMA 00

PHASE NTSC : 00 PAL : NO EFFECT

Initial setting value

(No.YA068)1-11

3.2.4 SERVICE MENU SETTING ITEMS (SERVICE MODE)

SIGNAL BLOCK

Item Contents

S01 BRIGHT

S02 CONTRAST

S03 CHROMA(PAL)

S04 CHROMA(NTSC)

S05 PHASE(NTSC)

S06 CHROMA

S07 BRIGHT

S08 CONTRAST

S09 BRIGHT

S10 CONTRAST

S11 PHASE(PAL)

S12 PHASE

S13 CONT TRACKING

DEFLECTION BLOCK

Aspect ratio

Item

Scan size

D01

D02 HORIZONTAL SIZE

D03 VERTICAL POSITION

D04 VERTICAL SIZE

D05 VERTICAL LINEARITY

D06 VERTICAL S-CORRECTION

D07 SIDEPIN PARABOLA

D08 SIDEPIN CORNER

There are many mode of the DEFLECTION BLOCK except for above DA1~DA8 (4:3 / 60Hz) DB1~DB8 (16:9 / 50Hz) DC1~DC8 (16:9 / 60Hz) DD1~DD8 (UNDER SCAN / 50Hz) DE1~DE8 (UNDER SCAN / 60Hz) DF7~DF8 (16:9 UNDER SCAN / 50Hz)

4:3

NORMAL

SCAN

Vertical

frequency

50Hz

Contents

HORIZONTAL POSITION

WHITE BALANCE BLOCK

Item Contents

W01 R CUTOFF

W02 G CUTOFF

W03 B CUTOFF

W04 R DRIVE (6500K)

W05 B DRIVE (6500K)

W06 R DRIVE (9300K)

W07 B DRIVE (9300K)

W08 R CUTOFF

W09 G CUTOFF

W10 B CUTOFF

W11 R DRIVE (6500K)

W12 B DRIVE (6500K)

W13 R DRIVE (9300K)

W14 B DRIVE (9300K)

W15 R CUTOFF

W16 G CUTOFF

W17 B CUTOFF

W18 R DRIVE (6500K)

W19 B DRIVE (6500K)

W20 R DRIVE (9300K)

W21 B DRIVE (9300K)

W22 R CUTOFF

W23 G CUTOFF

W24 B CUTOFF

3.2.5 LANDING MENU SETTING ITEMS

CONTROL BLOCK (Don't change the values, because all fixed)

Item Contents

C01 DESTINATION

C02 BRIGHT POINT UPPER

C03 LOWER

C04 CONTRAST POINT UPPER

C05 LOWER

C06 CHROMA POINT UPPER

C07 LOWER

C08 PHASE POINT UPPER

C09 LOWER

C10 OSD HORIZONTAL POSITION

C11 OSD VERTICAL FREQUENCY 50Hz

C12 OSD VERTICAL FREQUENCY 60Hz

C13 HORIZONTAL CENTER (RGB)

C14 HORIZONTAL CENTER (COMPONENT)

C15 BRIGHT SERVICE

C16 SHARPNESS CENTER

C17 HVT H

C18 HVT V

C19 HVT H (UNDER SCAN)

C20 HVT V (UNDER SCAN)

C21 V-S.CORRECTION

C22 TRAPEZOID

C23 HOUR METER

C24 RUSH DELAY

C25 DEGAUSS DELAY TIME

C26~C33 SLOT IDENTIFY

C34 LANDING ENABLE

C35 LANDING START

Item Input signal Contents

- - - PAL / NTSC LANDING

1-12 (No.YA068)

3.3 REPLACEMENT OF CHIP COMPONENT

3.3.1 CAUTIONS

(1) Avoid heating for more than 3 seconds. (2) Do not rub the electrodes and the resist parts of the pattern. (3) When removing a chip part, melt the solder adequately. (4) Do not reuse a chip part after removing it.

3.3.2 SOLDERING IRON

(1) Use a high insulation soldering iron with a thin pointed end of it. (2) A 30w soldering iron is recommended for easily removing parts.

3.3.3 REPLACEMENT STEPS

1. How to remove Chip parts

2. How to install Chip parts

[Resistors, capacitors, etc.]

(1) As shown in the figure, push the part with tweezers and

alternately melt the solder at each end.

(2) Shift with the tweezers and remove the chip part.

[Transistors, diodes, variable resistors, etc.]

(1) Apply extra solder to each lead.

SOLDER

[Resistors, capacitors, etc.]

(1) Apply solder to the pattern as indicated in the figure.

(2) Grasp the chip part with tweezers and place it on the

solder. Then heat and melt the solder at both ends of the chip part.

[Transistors, diodes, variable resistors, etc.]

(1) Apply solder to the pattern as indicated in the figure. (2) Grasp the chip part with tweezers and place it on the

solder.

(3) First solder lead A as indicated in the figure.

(2) As shown in the figure, push the part with tweezers and

alternately melt the solder at each lead. Shift and remove the chip part.

NOTE :

After removing the part, remove remaining solder from the pattern.

(4) Then solder leads B and C.

(No.YA068)1-13

SECTION 4

ADJUSTMENT

4.1 ADJUSTMENT PREPARATION

(1) There are 2 ways of adjusting this unit: One is with the

MENU as On-Screen-Display and the other is the conventional method using adjustment parts and components.

(2) The adjustment using the On-Screen-Display is made

on the basis of the initial setting values. The setting values which adjust the screen to the optimum condition can be different from the initial setting values.

(3) Make sure that connection is correctly made AC to AC

power source.

(4) Turn on the power of the TV and measuring instruments for

warning up for at least 30 minutes before starting adjustments.

(5) If the receive or input signal is not specified, use the most

appropriate signal for adjustment.

(6) Never touch the parts (such as variable resistors,

transformers and condensers) not shown in the adjustment items of this service adjustment.

(7) Unless otherwise specified in the adjustment items, preset

the values that the < SET-UP MENU >, MENU and FRONT PANEL CONTROL to initial conditions.

4.2 MEASURING INSTRUMENT

(1) DC voltmeter (digital voltmeter) (2) HV voltmeter (3) Oscilloscope (4) Color temperature meter or Color analyser (5) Signal generator (PAL/NTSC)

4.4 ADJUSTMENT ITEMS

CHECK ITEM

 HIGH VOLTAGE check  HIGH VOLTAGE HOLD DOWN check

B1 VOLTAGE

FOCUS ADJUSTMENT

VIDEO CIRCUIT

 WHITE BALANCE adjustment  SUB BRIGHT adjustment  SUB CONTRAST adjustment  PAL CHROMA adjustment  NTSC 3.58 CHROMA adjustment  NTSC 3.58 PHASE adjustment  COMPONENT CHROMA adjustment  RGB BRIGHT adjustment  RGB CONTRAST adjustment

DEFLECTION CIRCUIT

 H. POSITION / H. SIZE adjustment  4:3 SIDE PINCUSHION adjustment  V. POSITION adjustment  V. LIN. / V.S-CORRECTION adjustment  4:3 V. SIZE adjustment  16:9 V. SIZE adjustment  16:9 SIDE PINCUSHION adjustment  UNDERSCAN H. POSITION / H. SIZE adjustment  UNDERSCAN SIDE PINCUSHION adjustment  16:9 UNDERSCAN SIDE PINCUSHION adjustment

4.5 STANDARD SIGNALS FOR ADJUSTMENT ITEMS

4.3 PRESETTING FOR ADJUSTMENT

Setting item

APERTURE ADJ. BAR POSITION COLOR TEMP. COLOR SYSTEM RUSH DELAY INPUT SELECT ASPECT BLUE CHECK COLOR OFF UNDERSCAN MENU VOLUME CONTRAST BRIGHT CHROMA PHASE (NTSC)

Setting value

00 LOWER 6500 AUTO STD. A OFF (4 : 3) OFF OFF OFF OFF 20 00 00 00 00

COMPOSITE VIDEO SIGNAL (PAL/NTSC colour bar)

0% SETUP

75% Saturation

r-------

0.525V

B-W

BURST PAL :0.3V NTSC:0.286V

(P-P)

1-14 (No.YA068)

4.6 ADJUSTMENT LOCATIONS / WIRING DIAGRAM

~-----

POWER SW

SPEAKER

FRONT CONTROL PWB

0 0 0 [QI O O O O [QI [QI [QI [QI [QI

WWWWWWWW I I I I

DCBA

SLOT VIDEO

D~;;;;;;;:

ASPECT COLOR

I I I I

OFF BLUE CHECK

SUB DEF. PWB

1pin :NC 2pin :NC 3pin :X-RAY2 4pin :X-RAY1 5pin :TP-E(GND ) 6pin :NC

MAIN PWB

UNDER SCAN

+(UP) (DOWN) VOLUME/SELECT

CONTRAST /BRIGHT

DEF YOKE

FRONT

CHROMA /PHASE

CN2004

CN2003

FRONT

=--------' D

SLOT PWB

CN1005

CN1001

CN1006

SIGNAL PWB

CN1002

F1901 T5AH 250V

MAIN POWER SWITCH

COMPONENT/RGB INPUT CARD

(OPTION)

DEG COIL

DEG

CRT SOCKET PWB

SUB DEF. PWB

CN1004

l.~

.-----1 ---,

CN1003

VR1901 B1 ADJ

<'---->

FBT

UPPER

MIDDLE

LOWER

TP-E

: FOCUS1

: FOCUS2

: SCREEN

TP-B1

(No.YA068)1-15

CRT SOCKET PWB

(SOLDER SIDE)

TOP

SLOT PWB

TOP

CRT EARTH WIRE

TP-47G

(BRAIDED ASS'Y)

TP-47B

TP-E ( )

SIGNAL PWB

---- !'[SJ

CN8006 (50pin)

MAIN PWB

TOP

FRONT

CN6005

CN8005

COMPONENT/RGB INPUT CARD

(OPTION)

LANDING COIL

(canceller)

---~

IC6701 MICRO

COMPUTER

IC6702

MEMORY IC

CN6002 CN6001

1-16 (No.YA068)

4.7 BASIC OPERATION OF SERVICE MENU

4.7.1 SERVICE MENU ITEMS

With the SERVICE MENU, various settings can be made, and they are broadly classified in the following items of adjustments.

• It is no requirement for adjustment portion of the DEFLECTION BLOCK and CONTROL BLOCK

SIGNAL BLOCK

WHITE BALANCE BLOCK

DEFLECTION BLOCK

CONTROL BLOCK (Don't adjust)

4.7.2 HOW TO ENTER THE SERVICE MENU

(1) Press [MENU] and [VOLUME/SELECT (+)] button

simultaneously (Fig. 1). The letter “S” appears at the upper left of the screen (Fig. 2).

(2) While displaying the letter "S", press [MENU] and

[CHROMA /PHASE] button simultaneously (Fig.1). The screen display "PLEASE, DON'T TOUCH" (Fig. 3).

(3) While displaying the letters, press [VOLUME/SELECT (+ / -)]

button to display the SERVICE MENU as shown in Fig. 4.

(4) Press the [MENU] button, then return to the normal screen.

• If displaying the letters steps or state continues for more than 5 seconds without a further operation, the display extinguishes and the mode is released.

4.7.3 LANDING CORRECTION PROCEDURE

Landing correction is used only when uneven coloring is conspicuous.

• Input the white signal (1) Press [MENU] and [CONTRAST/BRIGHT] button simultaneously

(Fig. 5). < LANDING > is displayed on the screen (Fig. 6).

(2) Adjust to the state where irregular color is not most

conspicuous with [VOLUME/SELECT(+ / -)] buttons (fig.5).

(3) If adjustment is completed, return with [MENU] button (Fig.5).

This block adjusts the data of the various signal circuit controls.

This block adjusts the data of the WHITE BALANCE adjustment.

This block adjusts the data of the DEFLECTION circuit.

This block adjusts the whole of the systems.

CHROMA CONTRAST(} VOLUME/SELECT MENU

@= rn

,,;,, PHASE BRIGHT

-1

GAm D·

ld-ld1-

(3)

(2)

Fig.1

Fig.2

(1)

0 CHROMA CONTRASTO VOlUME/SELECT MENU

@ : CD G-"'CD D·

Oil> PHASE BHIGHT

I I 11

1-[=l--.-

Item Setting value

(2)

(1) (3)

,.l.,

LANDING :

Fig.5

Fig.6

SETTING

ITEM

FUNCTION

DISPLAY

PLEASE, DON'T TOUCH!

Fig.3

< BLOCK SELECT >

. .

SIGNAL BLOCK

: :

WHITE BALANCE BLOCK DEFLECTION BLOCK

CONTROL BLOCK

' .

,_ ---------------------_,

SIG W/B DEF

CTRL

EXIT

Fig.4

(No.YA068)1-17

4.7.4 OPERATION OF < BLOCK SELECT > SCREEN

While the SERVICE MENU < BLOCK SELECT > screen is displaying, in accordance with (FUNCTION DISPLAY) at the lower side of the screen, be able to operate the various items (Fig. 7).

JVC

SIG W/B DEF

~999~

ROMA CONTRASTO VOLUME/SELECT MEN~

CNTL

EXIT

rn= rn G..dm D·

HA~G~ __ --c

--------

EXIT

CONTROL BLOCK

DEFLECTION BLOCK

WHITE BALANCE BLOCK

SIGNAL BLOCK

Fig.7

< BLOCK SELECT >

SIGNAL BLOCK WHITE BALANCE BLOCK DEFLECTION BLOCK CONTROL BLOCK

, _______________ ,

SIG W/B DEF

:00000:

CNTL

EXIT

Press [MENU] button. Return to normal screen mode.

Press [VOLUME/SELECT (+)] button. Enter to system whole setting mode.

Press [VOLUME/SELECT (-)] button. Enter to DEFLECTION circuite adjustment mode.

Press [CONTRAST/BRIGHT] button. Enter to WHITE BALANCE adjustment mode.

Press [CHROMA/PHASE] button. Enter to signal circuit adjustment mode.

4.7.5 OPERATION EXAMPLE : SIGNAL BLOCK ADJUSTMENT Signal block adjustment

(1) SELECT THE SIGNAL BLOCK

Press the [CHROMA/PHASE] button to select the signal block. Then enter to the SIGNAL BLOCK screen.

(2) SELECT THE ITEM NO.

Press the [CHROMA/PHASE] button or [CONTRAST/ BRIGHT] button to select the item NO.

(3) ADJUSTMENT DATA OPERATION

Press the [VOLUME/SELECT(+)] button to change the setting value in the (+) direction. Press the [VOLUME/SELECT(-)] button to change the setting value in the (-) direction. The setting values are automatically memorised.

(4) EXIT SERVICE MENU

When adjustments are completed, press [MENU] button then return to the < BLOCK SELECT > screen. Again press [MENU] button then return to the normal screen.

l(!)(!)8(±)0

Item No. Setting

EXIT

<S01>:

= = = ---r,;====~

CHROMA CONTRASTO VOLUME/SELECT MENU

rn= rn G.dm D·

oi>, PHASE BRIGHT~

Item No. select Setting value (+/-)

Fig.8

Value

* * *

EXIT

1-18 (No.YA068)

4.7.6 SERVICE MENU ITEMS

 SIGNAL BLOCK

< FUNCTION DISPLAY >

0 CHROMA CONTRASTO VOWME/ SELECT

[D : C!J G""CD

BRIGHTil

Item No. select button

 WHITE BALANCE BLOCK

< FUNCTION DISPLAY >

,---------------~

I l.,_ ____________ ---t--,

I ..__,......_,,...,_.....,_ I

I__

EXIT DISP

Setting value (+/-) button

W01 EXIT65-D 93-DCUTO

_...J

Item No. Setting value

<S01> :

UNDER

SCAN

Display on/off button

Exit button

SIGNAL BLOCK

~---------------,

~~81±) DD ... I

L--------------~

EXIT

DISP

<S01>:

Fig.9

WHITE BALANCE BLOCK

< ITEM SELECT > CUTOFF :CUTO 6500 DRIVE :65-D 9300 DRIVE :93-D

0 CHROMA CONTRASTO VOWME/SELECT

[D: C!J G""CD D ·

t:U:IP E BAI HT-J:l

Select the 9300 DRIVE mode

Select the 6500 DRIVE mode

Select the CUTOFF mode

< FRONT PANEL BUTTON >

Exit button

Select the W01~W07 item adjust mode

_________ ...J

CUTO

65-D

93-D

W01

:00000~

EXIT

Fig.10

(No.YA068)1-19

[ WHITE BALANCE ADJUSTMENT : METHOD 1 ]

• Accordance with the screen display, select the each WHITE BALANCE mode following below.

• Refer to the "Low-Light adjustment" corresponding page about detailed adjustment steps.

CUTOFF ADJUSTMENT MODE (LOW LIGHT ADJUSTMENT)

< FUNCTION DISPLAY >

RGB

SERV

EXIT

Contents

R CUTOFF :

Setting value

R G B

Exit button

Setting value (+/-) button

Display 1H line button

Contents button

< FRONT PANEL BUTTON >

DRIVE ADJUSTMENT MODE (HIGH LIGHT)

• Refer to the "High-Light adjustment" corresponding page about detailed adjustment steps.

< FUNCTION DISPLAY >

RGB

SERV

EXIT

ContentsColor temp.

6500 R DRIVE

Setting value

0 CHROMA CONTRASTO VOWME/SELECT

u:J: C!l G ""CD

..,. PHASE BAIGHT il

Setting value (+/-) button

Display 1H line button

Contents button

< FRONT PANEL BUTTON >

D ·

Exit button

6500 9300

CUTOFF ADJUSTMENT MODE

r----------------

RGB

SERV

EXIT

lOCB±) o *** :

L----------------

R CUTOFF :

Fig.11

DRIVE ADJUSTMENT MODE

r----------------

RGB

SERV

EXIT

(X..l=l±) o *** :

L----------------

6500 R DRIVE :

Fig.12

[WHITE BALANCE ADJUSTMENT : METHOD 2]

< FUNCTION DISPLAY >

EXIT DISP

0CHROMA CONTRASTO VOWME/SELECT MENU

u:J: C!l G""CD

BRIGHTil

Item No. select button

Setting value (+/-) button

D·

1-20 (No.YA068)

Item No.

<W01> :

Display on/off button

Exit button

Setting value

W01~W07 ITEM ADJUSTMENT MODE

~---------------,

: ~~E)!±) DD ... I

---------------~

EXIT

DISP

<W01 > :

Fig.13

 DEFLECTION BLOCK

< FUNCTION DISPLAY >

II' CHROMA CONTRAST ct VOWME/SELECT MENU

[!], CD G""CD

Item No. select button

 CONTROL BLOCK

< FUNCTION DISPLAY >

BRIGHTn

EXIT

Setting value (+/-) button

EXIT

Item No.

Setting value

<D01> :

D ·

Exit button

Item No. Setting value

<C01> :

------------------~

DEFLECTION BLOCK

~---------------,

l~~Ell±l D ... I

L--------------~

EXIT

<D01 > :

Fig.14

CONTROL BLOCK

l!'CHROMA CONTRAST(t VOWME/SELECT MENU

[!], CD G""CD D·

BRIGHTn

Item No. select button

Setting value (+/-) button

Exit button

~---------------,

l~~Ell±l D ... I

L--------------~

EXIT

<C01 > :

Fig.15

(No.YA068)1-21

+ 48 hidden pages

JVC TM-H150CG/E, TM-H150CG/U Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual