JVC AV-29M201 User manual

No.51731
May 2000
A
V-29M201
1COPYRIGHT © 2000 VICTOR COMPANY OF JAPAN, LTD.
AV-29M201
CONTENTS
!SPECIFICATIONS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･････････････････････････････
･･････････････････････････････････････････････････････････
･････････････････････････････ 2
!SAFETY PRECAUTIONS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･･････････････････････
･･････････････････････････････････････････････
･･･････････････････････ 3
!FEATURES････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･･
･･････
･･･ 4
!FUNCTIONS････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･
････
･･ 5
!SPECIFIC SERVICE INSTRUCTIONS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･････････････
･･････････････････････････
･････････････ 6
!SERVICE ADJUSTMENTS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･････････････････････
･･････････････････････････････････････････
･････････････････････ 11
★
STANDARD CIRCUIT DIAGRAM (APPENDIX) ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･････
･･････････
･････ 2-1
!PARTS LIST････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･
･･
･27
SERVICE MANUAL
COLOR TELEVISION
BASIC CHASSIS
GA

No.51731
A
V-29M201
2
SPECIFICATIONS
Items Content
Dimensions (W×
××
×H×
××
×D) 25-3/4”×23-3/8”×20-1/2” / 65.4cm×59.1cm×51.8cm
Mass 67.8Ibs / 30.8kg
TV System and Color system
TV RF System CCIR(M)&(N)
Color System NTSC / PAL-M / PAL-N
Sound System BTSC (Multi Channel Sound)
TV Receiving Channels and Frequency
VL Band (02～06) 55.25MHz～83.25MHz
VH Band (07～13) 175.25MHz～211.25MHz
UHF Band (14～69) 471.25MHz～801.25MHz
ATV Receiving Channels and Frequency
Low Band (02～06)
High Band (07～13)
Mid Band (14～22)
Super Band (23～36)
Hyper Band (37～64)
Ultra Band (65～94, 100～125)
Sub Mid Band (01, 96～99)
TV/CATV Total Channel 180 Channels
Intermediate Frequency
Video IF Carrie r 45.75MHz
Sound IF Carrier 41.25MHz (4.5MHz)
Color Sub Carrier NTSC : 3.579545MHz
PAL-M : 3.57561149MHz
PAL-N : 3.58205625MHz
Power Input Rated Voltage : 120V～240V AC, 50Hz/60Hz
Operating Voltage : 90V～260V AC, 50Hz/60Hz
Power Consumption 115W(max.), 85W(avg.)
Picture Tube 27” (68cm) measured diagonally, Full Square
High Voltage 29kV±1.3kV (at zero beam current)
Speaker 2”×4-3/4” / 5×12cm Oval type×2
Audio Power Output 5W+5W
Input (1, 2) Video : 1Vp-p 75Ω(RCA pin jack)
Audio : 500mVrms (-4dBs), High Impedance (RCA pin jack)
Variable Audio Output More then 0～1550mVrms (+6dBs)
Low Impedance (400Hz when modulated 100%) (RCA pin jack)
Antenna terminal 75Ω(VHF/UHF) Terminal, F-Type Connector
Accessories Remote Control Unit RM-C765-1A(AAA/R03/UM-4 dry battery×2)
Design & specifications are subject to change without notice.
(55.25MHz～799.25MHz)

No.51731
A
V-29M201
3
SAFETY PRECAUTIONS
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 with a measuring apparatus (oscilloscope etc.)
the LIVE side GND and ISOLATED(NEUTRAL) side GND or
EARTH side GND at the same time.
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 10k!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.
(1) 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.
(2) 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 1000 ohms per volt or more sensitivity in the following
manner. Connect a 1500!10W resistor paralleled by a 0.15#F
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.).
0.15
μ
F AC-TYPE
1500
!
10W
GOOD EARTH GROUND
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART
AC VOLTMETER
(HAVING 1000
!
/V,
OR MORE SENSITIVITY)

No.51731
A
V-29M201
4
FEATURES
"New chassis design enables use of a main board with simplified
circuitry.
"Provided with miniature tuner (TV/CATV).
"PLL synthesizer system TV/CATV totaling 180 channels.
"Multifunctional remote control permits picture adjustment.
"With AUDIO. VIDEO INPUT terminal.
"Variable audio output terminal.
"Adoption of the VIDEO STATUS function.
"Adoption of the ON/OFF TIMER function.
"With 75ΩV/U in common (F-Type) ANT Terminal.
"SLEEP TIMER for setting in real time.
"Wide range voltage (90V～260V) AC power input.

No.51731
A
V-29M201
5
FUNCTIONS
■FRONT CONTROL
■REMOTE CONTROL UNIT ■
■■
■REAR VIEW
(RM-C765-1A)

No. 51731
A
V-29M201
6
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power supply cord.
2. Remove the 7 screws marked A
AA
Aand 2 screws marked B
BB
Bas
shown in Fig.1.
*
**
* When reinstalling the rear cover, carefully push it inward after
inserting the chassis into the rear cover groove.
REMOVING THE CHASSIS
%
%%
%After removing the rear cover.
1. Slightly raise the both sides of the chassis by hand and remove
the 2 claws under the both sides of the chassis from the front
cabinet.
2. Draw the chassis backward along the rail in the arrow direction
marked C
CC
Cas shown in the Fig.1.
(If necessary, take off the wire clamp, connectors etc.)
*
**
* When conducting a check with power supplied, be sure to
confirm that the CRT earth wire is connected to the CRT
SOCKET PWB and the MAIN PWB.
REMOVING THE SPEAKER
%
%%
%After removing the rear cover and chassis.
1. Remove the 2 screws marked D
DD
Das shown in Fig.1.
2. Follow the same steps when removing the other hand speaker.
CHECKING THE MAIN PW BOARD
1. To check the back side of the MAIN PW Board.
1) Pull out the chassis. (Refer to REMOVING THE CHASSIS).
2) Erect the chassis vertically so that you can easily check the
back side of the MAIN PW Board.
[CAUTION]
%
%%
%When erecting the chassis, be careful so that there will be no
contacting with other PWB.
%
%%
%Before turning on power, make sure that the CRT earth wire and
other connectors are properly connected.
WIRE CLAMPING AND CABLE TYING
1. Be sure 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. 51731
A
V-29M201
7
C
A
B
CRT SOCKET PWB
(Within MAIN PWB)
FRONT
CONTROL PWB
MAIN PWB
CLAW
CLAW
REAR
COVER
(×2)
(×7)
FRONT CABI.
D
D

No. 51731
A
V-29M201
8
MEMORY IC REPLACEMENT
1. Memory IC
This model use a memory IC.
The memory IC stores data for proper operation of video and deflection circuits.
When replacing, be sure to use an IC containing this (initial value) data.
2. Memory IC replacement procedure
PROCEDURE SCREEN DISPLAY
(1) Power off
Switch off the power and disconnect the power cord from the outlet.
(2) Replace the memory IC.
Be sure to use memory ICs written with the initial data values.
(3) Power on
Connect the power cord to the outlet and switch on the power.
(4) System constant check and setting
%
%%
%It must not adjust without signal.
1) Simultaneously press the DISPLAY key and VIDEO STATUS key
of the remote control unit.
2) The SERVICE MENU screen of Fig.1 is displayed.
3) While the SERVICE MENU is displayed, again simultaneously
press the DISPLAY and VIDEO STATUS keys to display the Fig.2
SYSTEM CONSTANT screen.
4) Refer to the SYSTEM CONSTANT table and check the setting
items. Where these differ, select the setting item with the MENU
UP / DOWN key and adjust the setting with the MENU LEFT /
RIGHT keys. (The letters of the selected item are displayed in
yellow.)
5) After adjusting, release the MENU LEFT / RIGHT key to store the
setting value.
6) Press the EXIT key twice to return the normal screen.
(5) Receive channel setting
Refer to the OPERATING INSTRUCTIONS (USER’S GUIDE) and
set the receive channels (Channels Preset) as described.
(6) User settings
Check the user setting items according to Table 2.
Where these do not agree, refer to the OPERATING
INSTRUCTIONS (USER’S GUIDE) and set the items as described.
(7) SERVICE MENU setting
Verify what to set in the SERVICE MENU, and set whatever is
necessary. (Fig.1) refer to the SERVICE ADJUSTMENT for setting.
SYSTEM CONSTANT
SELECT BY
OPERATE BY EXIT BY
IT
GAME : YES
HYPER SCAN : YES
SURROUND : YES
CCD : YES
VIDEO : 2
EXIT
Fig.2
SERVICE MENU
SELECT BY
OPERATE BY EXIT BY
IT
PICTURE SOUND
VIDEO STATUS OTHERS
LOW LIGHT HIGH LIGHT
RF AFC CHK VCO
(
CW
)
I2C BUS CTRL
EXIT
Fig.1

No. 51731
A
V-29M201
9
TABLE 1 ( System Constant Setting )
Setting item Setting content Setting value
GAME YES
HYPER SCAN YES
SURROUND YES
CCD YES
VIDEO 2
TABLE 2 (User setting value)
Setting item Setting value
1. Setting of FUNCTION
MAIN POWER OFF
SUB POWER ON
CHANNEL CH 02
CHANNEL PRESET Refer to OPERATING INSTRUCTIONS
VOLUME 10
TV/VIDEO TV
DISPLAY OFF
SLEEP TIMER 0
VIDEO STATUS STANDARD
CLOSED CAPTION OFF (CC1/T1)
HYPER SURROUND OFF
2. Setting of MENU
TINT CENTER
COLOR CENTER
PICTURE CENTER
BRIGHT CENTER
DETAIL CENTER
BASS CENTER
TREBLE CENTER
BALANCE CENTER
MTS STEREO
TV SPEAKER ON
SET CLOCK Unnecessary to set
ON/OFF TIMER NO
CHANNEL SUMMARY Unnecessary to set
SET LOCK CODE Unnecessary to set
AUTO TUNER SETUP Unnecessary to set
TUNER MODE AIR
NOISE MUTING OFF
CLOSED CAPTION OFF (CAPTION : CC1 TEXT : T1)
LANGUAGE ENG.
210
YES NO
YES NO
YES NO
YES NO

No.51731
A
V-29M201
10
REPLACEMENT OF CHIP COMPONENT
!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.
!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.
!REPLACEMENT STEPS
1. How to remove 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 tweezers and remove the chip part.
#
##
#Transistors, diodes, variable resistors, etc
(1) Apply extra solder to each lead.
(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.
2. How to install Chip parts
#
##
#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 Aas indicated in the figure.
(4) Then solder leads
Band C.
SOLDER SOLDER
AB
C
A
B
C

No. 51731
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V-29M201
11
SERVICE ADJUSTMENTS
ADJUSTMENT PREPARATION:
1. You can make the necessary adjustments for this unit with either the remote control unit or with the adjustment equipment and
parts as given below.
2. Adjustment with the remote control unit is made on the basis of the initial setting values, however, the new setting values which
set the screen to its optimum condition may differ from the initial settings.
3. Make sure that AC power is turned on correctly.
4. Turn on the power for the set and test equipment before use, and start the adjustment procedures after waiting at least 30 minutes.
5. Unless otherwise specified, prepare the most suitable reception or input signal for adjustment.
6. Never touch any adjustment parts which are not specified in the list for this adjustment-variable resistors, transformers, condensers, etc.
7. Presetting before adjustment.
Unless otherwise specified in the adjustment instructions, preset the following functions with the remote control unit.
VIDEO STATUS NORMAL
TINT, COLOR, PICTURE, BRIGHT,
DETAIL CENTER
BASS, TREBLE, BALANCE CENTER
HYPER SURROUND OFF
ADJUSTMENT EQUIPMENT
1. DC voltmeter(or digital voltmeter)
2. Oscilloscope
3. Signal generator ( Pattern generator ) [NTSC] [PAL-M] [PAL-N]
4. Remote control unit
5. TV audio multiplex signal generator
6. Frequency counter
ADJUSTMENT ITEMS
%Check of B1 POWER SUPPLY
%IF VCO adjustment
%RF AGC adjustment
%FOCUS adjustment
%DEFLECTION adjustment
V. HEIGHT, V. POSITION, V. LIN., V S CR adjustment
H. POSITION adjustment
%VIDEO / CHROMA adjustment
WHITE BALANCE ( Low light ) adjustment
WHITE BALANCE ( High light ) adjustment
SUB BRIGHT adjustment
SUB CONTRAST adjustment
SUB COLOR adjustment
SUB TINT adjustment
%MTS circuit adjustment
INPUT LEVEL check
STEREO VCO adjustment
SAP VCO adjustment
FILTER check
SEPARATION adjustment

No. 51731
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ADJUSTMENT LOCATIONS
F901
IC701
(
CPU
)
TUNER
MAIN PWB ASS'Y(1/2)
B1
(
TP-91
)
B1
Q522
UPPER : FOCUS
LOWER : SCREEN
(
SOLDER SIDE
)
U
CRT SOCKET
PWB ASS'Y(2/2)
(
Within MAIN PWB ASS'Y
)
FRONT CONTROL PWB ASS'Y
IC651
IC201
IC702
(
MEMORY
)
HV
HVT
13
TP-E
(
)
C
U
IC101
MPX
1
5
E1
P-E
(
)
T
T
TP-R VOL
＋
＋ ＋
＋
IC701
D702
POWER/
ON TIMER
LED
S901
POWER SW
VOL
―
― ―
―
CH
＋
＋ ＋
＋
CH
―
― ―
―
MENU
(
OPERATE
)
(
SUB POWER
)
AV JACK
T111CW
CRT EARTH
(
BRAIDED ASS'Y
)
TOP FRONT
FRONT
T522

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BASIC OPERATION OF SERVICE MENU
1. TOOL OF SERVICE MENU OPERATION
Operate the SERVICE MENU with the REMOTE CONTROL UNIT.
2. SERVICE MENU ITEMS
In general, basic setting(adjustments) items or verifications are performed in the SERVICE MENU.
(1) PICTURE ･･････････････････ This sets the setting values (adjustment values) of the VIDEO/CHROMA and DEFLECTION circuits.
(2) SOUND････････････････････ This sets the setting values (adjustment values) of the AUDIO circuit.
(3) VIDEO STATUS･････････････ This is used when the THEATER and GAME MODE is adjusted.
(4) OTHERS･･･････････････････ This is used when the OTHERS MODE is adjusted.
(5) LOW LIGHT ････････････････ This sets the setting values (adjustment values) of the WHITE BALANCE circuit.
(6) HIGH LIGHT････････････････ This sets the setting values (adjustment values) of the WHITE BALANCE circuit.
(7) RF AFC CHK ･･･････････････ This is used when the IF VCO is adjusted. [Do not adjust]
(8) VCO (CW) ･････････････････ This is used when the IF VCO is adjusted.
(9) I2C BUS CTRL ･･････････････ This is used when ON/OFF of the I2C BUS CTRL is set. [Fixed ON]
3. Basic Operations of the SERVICE MENU
(1) How to enter the SERVICE MENU.
Press the DISPLAY key and VIDEO STATUS key of the remote control unit at the same time to enter the SERVICE MENU screen ①
shown in figure page later.
(2) SERVICE MENU screen selection
Press the UP / DOWN key of the MENU to select any of the following items.
(The letters of the selected items are displayed in yellow.)
●PICTURE ●SOUND
●VIDEO STATUS ●OTHERS
●LOW LIGHT ●HIGH LIGHT
●RF AFC CHK ●VCO (CW)
●I
2C BUS CTRL
(3) Enter the any setting ( adjustment ) mode
"PICTURE, SOUND and OTHERS mode
1) If select any of PICTURE, SOUND or OTHERS items, and the LEFT / RIGHT key is pressed from SERVICE MENU ( MAIN
MENU ), the screen ②will be displayed as shown in figure page later.
2) Then the UP / DOWN key is pressed, the PICTURE mode screen ③or the SOUND mode screen ④or the OTHERS mode
screen ⑤is displayed, and the PICTURE, SOUND or OTHERS setting can be performed.
"VIDEO STATUS, LOW LIGHT, HIGH LIGHT, RF AFC CHK, VCO (CW) and I2C BUS CTRL mode
1) If select any of VIDEO STATUS / LOW LIGHT / HIGH LIGHT / RF AFC CHK / VCO (CW) / I2C BUS CTRL items, and the LEFT
/ RIGHT key is pressed from SERVICE MENU ( MAIN MENU ), the screens ⑥⑦⑧⑨⑩⑪will be displayed as shown in
figure page later.
2) Then the settings or verifications can be performed.

No. 51731
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SERVICE MENU
SELECT BY
OPERATE BY EXIT BY
IT
PICTURE SOUND
VIDEO STATUS OTHERS
LOW LIGHT HIGH LIGHT
RF AFC CHK VCO (CW)
I2C BUS CTRL
EXIT
SELECT BY EXIT BY
IT
EXIT
BRIGHT EXIT BY
IT
BRIGHT
EXIT
***
******
***
SELECT BY
OPERATE BY EXIT BY
IT
1. NOISE
STATUS
EXIT
***
******
***
********
****************
********
*** *** ***
*** *** ****** *** ***
*** *** ***
SELECT BY
OPERATE BY EXIT BY
IT
1. PICTURE
EXIT
**** ****
**** ******** ****
**** ****
***
******
***
****
********
****
EXIT BY
IT
HIGH LIGHT
EXIT
***
******
***
SELECT BY
OPERATE BY EXIT BY
IT
1.OSD POS.
EXIT
***
******
***
****
********
****
EXIT BY
IT
VCO (CW)
TOO HIGH
ABOVE REFERENCE
BELOW REFERENCE
TOO LOW SYNC : YES
EXIT
OPERATE BY EXIT BY
IT
EXIT
SELECT BY
OPERATE BY EXIT BY
IT
RF AFC
FINE
STATUS
EXIT
①
①①
①
SERVICE MENU (MAIN MENU)
②
②②
②
SCREEN
⑧
⑧⑧
⑧
HIGH LIGHT MODE
***
******
***
⑩
⑩⑩
⑩
VOC (CW) MODE
I2C BUS ON
⑪
⑪⑪
⑪
I
2
C BUS CTRL MODE
[FIXED ON]
⑥
⑥⑥
⑥
VIDEO STATUS MODE
THEATER
SELECT BY
OPERATE BY EXIT BY
IT
TINT G DRIVE
COLOR B DRIVE
PICTURE R CUT.
BRIGHT G CUT.
DETAIL B CUT.
EXIT
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
⑨
⑨⑨
⑨
RF AFC CHK MODE [DO NOT ADJUST]
ON
***
******
***
********
****************
********
⑦
⑦⑦
⑦
LOW LIGHT MODE
④
④④
④
SOUND MODE
⑤
⑤⑤
⑤
OTHERS MODE
③
③③
③
PICTURE MODE
GAME
SELECT BY
OPERATE BY EXIT BY
IT
TINT G DRIVE
COLOR B DRIVE
PICTURE R CUT.
BRIGHT G CUT.
DETAIL B CUT.
EXIT
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
Press
VIDEO
STATUS
Key
**** ****
**** ******** ****
**** ****
********
****************
********

No. 51731
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(4) Setting method
1) UP / DOWN key of the MENU
Select the SETTING ITEM.
2) LEFT / RIGHT key of the MENU
Setting(adjust) the SETTING VALUE of the SETTING ITEM.
When the key is released the SETTING VALUE will be stored
(memorized).
3) EXIT key
Returns to the previous screen.
[NOTE] (PICTURE MODE ONLY)
When the INTIAL SETTING VALUE is turned to yellow, you can adjust
the values but you cannot adjust the values when it is turned to red
(because the signal conditions, etc. are not met.)
(5) Releasing SERVICE MENU
1) After returning to the SERVICE MENU upon completion of the setting
(adjustment) work, press the EXIT key again.
★The settings for LOW LIGHT and HIGH LIGHT are described in the WHITE
BALANCE page of ADJUSTMENT.
★The setting for VCO(CW) are described in the IF VCO page of ADJUSTMENT.
SELECT BY
OPERATE BY EXIT BY
IT
1. NOISE
STATUS
EXIT
***
******
***
****
********
****
SOUND MODE
SELECT BY
OPERATE BY EXIT BY
IT
1. PICTURE
EXIT
**** ****
**** ******** ****
**** ****
***
******
***
****
********
****
PICTURE MODE INITIAL
SETTING VALUE
↓(Adjust)
SETTING VALUE
SETTING
ITEM
SELECT BY
OPERATE BY EXIT BY
IT
1. OSD POS.
EXIT
***
******
***
****
********
****
**** ****
**** ******** ****
**** ****
OTHERS MODE
GAME
SELECT BY
OPERATE BY EXIT BY
IT
TINT G DRIVE
COLOR B DRIVE
PICTURE R CUT.
BRIGHT G CUT.
DETAIL B CUT.
EXIT
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
The letter of the selected
Items are displayed in yellow.
THEATER
SELECT BY
OPERATE BY EXIT BY
IT
TINT G DRIVE
COLOR B DRIVE
PICTURE R CUT.
BRIGHT G CUT.
DETAIL B CUT.
EXIT
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
VIDEO STATUS MODE
Press
VIDEO
STATUS
Key

No. 51731
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INITIAL SETTING VALUE OF SERVICE MENU
1. Adjustment of the SERVICE MENU is made on the basis of the initial setting values ; however, the new setting values which set
the screen in its optimum condition may differ from the initial setting.
2. Do not change the initial Setting Values of the Setting (Adjustment) items not listed In “ADJUSTMENT”.
"PICTURE MODE
$The four setting items in the video mode No.8 EXT PIC., No.9 EXT BRI., No.10 EXT COL., and No.11 EXIT TINT are linked to the items in
the TV MODE No.1 PICTURE, No.2 BRIGHT, No.5 COL.NTSC and No.6 TINT, respectively. When the setting items in the TV mode are
adjusted, the values in the setting items in the video mode are revised automatically to the same values in the TV mode.(The initial setting
values given in ( ) are off-set values.)
$When the four items (No.8, 9, 10 and 11) are adjusted in the video mode, the setting values in each item are revised independently.
No. Setting (Adjustment) item Variable range Initial setting value
1. PICTURE 0～127 60
2. BRIGHT 0～127 64
3. COL. PALM 0～127 80
4. COL. PALN 0～127 80
5. COL. NTSC 0～127 95
6. TINT 0～127 65
7. TV DTL 0～63 33
8. EXT PIC. ±25 (0)
9. EXT BRI. ±25 (0)
10. EXT COL. ±25 (+4)
11. EXT TINT ±25 (+3)
12. EXT DTL 0～63 30
13. P/N KILL 0 / 1 0
14. Y S CONT 0～31 31
15. TV Y-DL 0～41
16. EXT Y-DL 0～41
17. WPL SW 0 / 1 0
18. Y GAMMA 0 / 1 0
19. P/N G P. 0 / 1 0
20. COL. L SW 0 / 1 1
21. COL. LMT. 0～31
22. PN C. ATT 0～31
23. OFST. SW 0 / 1 0
24. OFST. B-Y 0～15 8
25. OFST. R-Y 0～15 8
26. C-TOF SW 0 / 1 1
27. TV T FO 0～31
28. TV T Q 0～30
29. EXT T FO 0～30
30. EXT T Q 0～30
31. C-TRAP 0 / 1 0
32. C-TR. FO 0～32
33. C-TRAP Q 0～31
34. FIX B/W 0 / 1 0
35. APA P. FO 0～32
36. DC TRAN. 0～74
37. B. ST. SW 0 / 1 0
38. B. ST. PO. 0～70
39. ABL GAIN 0～74
40. ABL PO. 0～70
41. HALF T. 0～21
42. DRV G SW 0 / 1 0
43. NT. COMB 0 / 1 1
44. COIN DET 0～33
45. NOISE L. 0～33
46. VCD MODE 0 / 1 0
47. V AGC SP 0 / 1 0
48. H POS. 50 0～31 6
49. H BLK. 50 0～70
50. V POS. 50 0～72

No. 51731
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"PICTURE MODE
No. Setting (Adjustment) item Variable range Initial setting value
51. V SIZE50 0～127 71
52. V S CR50 0～127 83
53. V LIN. 50 0～31 4
54. H POS. 60 0～31 10
55. H BLK. 60 0～70
56. V POS. 60 0～70
57. V SIZE60 0～127 72
58. V S CR60 0～127 99
59. V LIN. 60 0～31 3
60. RF AGC 0～255 160
"SOUND MODE
No. Setting (Adjustment) item Variable range Initial setting value
1. NOISE 0 / 1 1
2. IN LEVEL 0～63 50
3. FH MON. 0 / 1 0
4. ST VCO 0～63 25
5. PILOT 0 / 1 0
6. FILTER 0～63 30
7. LOW SEP. 0～63 22
8. HI SEP. 0～63 23
9. 5FH MON. 0 / 1 0
10. SAP VCO 0～63 26
11. IN GAIN 0 / 1 0
12. FIL. OFF. 0～10 0
"VIDEO STATUS MODE
Initial setting value
Setting (Adjustment) item Variable range THEATER GAME
TINT ±20 0 0
COLOR ±20 -3 -3
PICTURE -30～＋20 -10 -10
BRIGHT ±20 0 0
DETAIL ±15 0 -5
G DRIVE -99～+50 -22 0
B DRIVE -99～+50 -54 0
R CUT. ±10 0 0
G CUT. ±10 0 0
B CUT. ±10 0 0

No. 51731
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"OTHERS MODE
No. Setting (Adjustment) item Variable range Initial setting value
1. OSD POS. 0～31 7
2. LOCK DET 0 / 1 0
3. SD SEL. 0～20
4. H-CK SW 0 / 1 0
"LOW LIGHT MODE
Setting (Adjustment) item Variable range Initial setting value
R CUTOFF 0～255 20
G CUTOFF 0～255 20
B CUTOFF 0～255 20
"HIGH LIGHT MODE
Setting (Adjustment) item Variable range Initial setting value
G DRIVE 0～255 128
B DRIVE 0～255 128
"RF AFC CHK MODE
Setting (Adjustment) item Variable range Initial setting value
RF AFC ON / OFF ON
FINE -77～+77 ±××
"I2C BUS CTRL MODE
Setting (Adjustment) item Variable range Initial setting value
I2C BUS ON / OFF [Fixed ON]
DO NOT
A
DJUST

No. 51731
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19
■
■■
■ADJUSTMENTS
B1 POWER SUPPLY
Item Measuring
instrument Test point Adjustment item Description
Check of
B1 POWER
SUPPLY
DC Voltmeter B1 ( B1
Connector
1 pin)
(TP-91)
TP-E(#)
( B1
Connector
3 pin)
1. Receive a black and white signal (color off). (NTSC)
2. Connect the DC voltmeter to B1 connector 1 pin (TP-
91) and TP-E(#) (B1 connector 3 pin).
3. Confirm that the voltage is DC129.5V V.
ADJUSTMENT OF IF VCO
Item Measuring
instrument Test point Adjustment item Description
IF VCO
adjustment Signal generator CW TRANSF. (T111)
[VCO (CW)] mode
%Under normal conditions, no adjustment is required. and it
must not adjust without signal.
1. Receive a NTSC broadcast. (use channels without offset
frequency).
2. Select the VCO(CW) mode from the SERVICE MENU.
3. Confirm the color change (yellow) from “TOO HIGH”to
“TOO LOW”by CW TRANSF. and “SYNC : YES”being
shown on the screen. Then, adjust CW TRANSF. until
“BELOW REFERENCE”mark turns yellow and confirm
again “SYNC : YES”being shown on the screen.
ADJUSTMENT OF RF AGC
RF AGC
adjustment No.60 RF AGC 1. Receive a broadcast.
2. Select “No.60 RF AGC” of the PICTURE mode in SERVICE
MENU.
3. Press the MUTING key and turn off color.
4. With the MENU LEFT key, get noise in the screen picture. (0
side of setting value)
5. Press the MENU RIGHT key and stop when noise disappears
from the screen.
6. Change to other channels and make sure that there is no
irregularity.
7. Press the MUTING key and get color out.
ADJUSTMENT OF FOCUS
FOCUS
adjustment Signal generator FOCUS VR [In HVT] 1. Receive a crosshatch signal.
2. While looking at the screen, adjust FOCUS VR so that the
vertical and horizontal lines will be clear and in fine detail.
3. Make sure that the picture is in focus even when the screen
gets darkened.
+2
-2.5
EXIT BY
IT
VCO
(
CW
)
TOO HIGH
ABOVE REFERENCE
BELOW REFERENCE
TOO LOW SYNC : YES
EXIT
YELLOW

No. 51731
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20
ADJUSTMENT OF DEFLECTION CIRCUIT
Item Measuring
instrument Test point Adjustment item Description
V. HEIGHT,
V. POSITION,
V. LIN.
V. S CR
adjustment
Signal
generator No.56 V POS. 60
No.57 V SIZE 60
No.58 V S CR60
No.59 V. LIN. 60
No.50 V POS.50
No.51 V SIZE 50
No.52 V S CR50
No.53 V LIN.50
[60Hz]
1. Receive a crosshatch signal.(NTSC or PAL-M)
2. Confirm that the value of PICTURE MODE “No.56 V POS.
60”is 0.
3. Confirm the initial setting value of the “No.57 V SIZE 60”,
No.58 V S CR60”and “No.59 V LIN. 60”.
4. Adjust the vertical screen size to 92% with the PICTURE
MODE “No.57 V SIZE60”.
5. Adjust the PICTURE MODE “No.59 L LIN. 60”and “No.58
V S CR60”to get the best vertical linearity.
NOTE :
1. The PICTURE MODE “No.56 V POS. 60” is fixed on value 0.
2. Bottom of screen is to be located within the 85%～95% range.
[50Hz]
1. Receive a crosshatch signal. (PAL-N)
2. Confirm the initial setting value of the “No.50 V POS.50”,
“No.51 V SIZE 50” , “No.52 V S CR 50” and “No.53 V LIN.50”.
3. Adjust the vertical screen size to 92% with the PICTURE
MODE “No.51 V SIZE50”.
4. Adjust the PICTURE MODE “No.53 V LIN.50” and “No.52 V S
CR50” to get the best vertical linearity.
5. Adjust the PICTURE MODE “No.50 V POS.50” so that the
vertical center line comes close to the CRT vertical center as
much as possible.
"Readjust V SIZE, V LIN., V S CR if necessary.
NOTE :
1. Bottom of screen is to be located within the 85%～95% range.
H. POSITION
adjustment Signal generator No.54 H POS.60
No.48 H POS.50
[60Hz]
1. Receive a crosshatch signal. (NTSC or PAL-M)
2. Select the “No.54 H POS. 60” of the PICTURE mode in
SERVICE MENU.
3. Confirm the initial setting value of the "No.54 H POS. 60".
4. Adjust the “No.54 H POS. 60” until the screen will be
horizontally centered.
[50Hz]
1. Receive a crosshatch signal. (PAL-N)
2. Select the “No.48 H POS. 50” of the PICTURE mode in
SERVICE MENU.
3. Confirm the initial setting value of the "No.48 H POS. 50".
4. Adjust the “No.48 H POS. 50” until the screen will be
horizontally centered.
Picture
size
(
100%
)
Picture size
(
100%
)
Screen
size
(
92%
)
Scree size