JVC AV-N29220 User manual

No.51833
Sep. 2001
A
V-N29220
1COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD. Sept. 2001
AV-N29220/R
AV-N29220/S
CONTENTS
!SPECIFICATIONS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･････････････････････････････
･･････････････････････････････････････････････････････････
･････････････････････････････ 2
!SAFETY PRECAUTIONS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･･････････････････････
･･････････････････････････････････････････････
･･･････････････････････ 3
!FEATURES････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･･
･･････
･･･ 4
!MAIN DIFFERENCE LIST ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･･････････････････････
･･････････････････････････････････････････････
･･･････････････････････ 4
!HOW TO IDENTIFY MODELS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････････
････････････････････････････････････････
････････････････････ 4
!FUNCTIONS････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･
････
･･ 5
!SPECIFIC SERVICE INSTRUCTIONS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･････････････
･･････････････････････････
･････････････ 6
!SERVICE ADJUSTMENTS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･････････････････････
･･････････････････････････････････････････
･････････････････････ 10
!PARTS LIST････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･
･･
･25
★
OPERATING INSTRUCTIONS
★
STANDARD CIRCUIT DIAGRAM ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････
････････････････････････････････
････････････････ 2-1
SERVICE MANUAL
COLOR TELEVISION
BASIC CHASSIS
FV4

No.51833
A
V-N29220
2
SPECIFICATIONS
Contents
Items AV-N29220/R AV-N29220/S
Dimensions (W×
××
×H×
××
×D) 654mm×593mm×495mm
Mass 31.1 kg
TV RF System CCIR(M)
Color Sound System NTSC, BTSC System (Multi Channel Sound)
TV Receiving Channels and Frequency
VL Band
VH Band
UHF Band
(02～06) 54MHz～88MHz
(07～13) 174MHz～216MHz
(14～69) 470MHz～806MHz
CATV Receiving Channels and Frequency
Low Band
High Band
Mid Band
Super Band
Hyper Band
Ultra Band
Sub Mid Band
TV/CATV Total Channel
(02～06, A-8) by (02～06&01)
(07～13) by (07～13)
(A～1) by (14～22)
(J～W)by(23～36)
(W+1～W+28) by (37～64)
(W+29～W+84) by (65～125)
(A8, A4～A1) by (01, 96～99)
180 Channels
Intermediate Frequency
Video IF Carrier
Sound IF Carrier
Color Sub Carrier
45.75MHz
41.25MHz (4.5MHz)
3.58MHz
Power Input
Power Consumption 120V AC, 60Hz
113W
Picture Tube
High Voltage 29” (68cm) Measured Diagonally
29kV±1kV (at zero beam current)
Speaker
Audio Power Output 5×9cm Oval type×2
1.2W×2
Input Video Input 1Vp-p, 75Ω(RCA pin jack)
Audio Input (R/L) 500mVrms ( -4dBs ), High Impedance (RCA pin jack)
S-Video Y: 1Vp-p Positive (negative sync provided, when terminated with 75Ω)
C: 0.286Vp-p (burst signal, when terminated with 75Ω)
Variable Audio Output (R/L) More than 0～1550mVrms (+6dBs)
Low impedance (400Hz when modulated 100%)
(RCA pin jack)
Antenna terminal 75Ω(VHF/UHF) Terminal, F-Type Connector
Remote Control Unit RM-C306
(AA/R6/UM-3 battery×2)
Design & specifications are subject to change without notice.
(54MHz～804MHz)

No.51833
A
V-N29220
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. Qualified personnel should perform Service 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 that 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 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.51833
A
V-N29220
4
FEATURES
"New chassis design enables use of a single board with simplified
circuitry.
"Provided with miniature tuner (TV/CATV).
"Multifunctional remote control permits picture adjustment.
"Adoption of the CHANNEL GUARD function prevents the specific
channels from being selected, unless the “ID number” is key in.
"I
2C bus control utilizes single chip ICs.
"Adoption of the VIDEO STATUS function.
"Adoption of the ON/OFF TIMER function.
"Built-in V-CHIP system.
"With 75ΩV/U in common (F-Type) ANT Terminal.
"SLEEP TIMER for setting in real time.
"Closed-caption broadcasts can be viewed.
"Audio Video input terminal.
"Built-in MTS system.
"Built-in HYPER-SURROUND system.
"S-VIDEO input terminal for taking best advantage of Super VHS.
"Variable Audio output terminal.
"2 LINE Digital Comb filter Improved picture quality.
MAIN DIFFERENCE LIST
!
!!
!Model name
Parts Name AV-N29220/R AV-N29220/S
MAIN PWB SFV-1071A-M2 SFV-1074A-M2
!PICTURE TUBE (ITC) A68ADT25X881 A68QDN891X001
HOW TO IDENTIFY MODELS
The difference between AV-N29220/R and AV- N29220/S is in the PICTURE TUBE.
As the result of the difference in PICTURE TUBE, the MAIN PWB also differ.
!MODEL
Parts name AV-N29220/R AV-N29220/S
!RATING LABEL GQ20001-001A-A
←
←←
←
INDICATED AV-N29220 INDICATED AV-N29220
INDICATED“
““
“R”
””
”INDICATED“
““
“S”
””
”

No. 51833
A
V-N29220
5
FUNCTIONS
■
■■
■REMOTE CONTROL UNIT ■REAR TERMINAL
①
INPUT1 (S-VIDEO, V, L/MONO, R) terminal
②
AUDIO OUTPUT terminal (Variable)
③
ANTENNA terminal
123
①
TV / CATV select key
②
VCR / DVD select keys
③
VIDEO STATUS key
④
DISPLAY key
⑤
SLEEP TIMER key
⑥
HYPER SURROUND key
⑦
MUTING key
⑧
MENU key
■FRONT CONTROL KEYS
12 3 4 5 6 7 8 9
①
INPUT 2 (V, L/MONO, R) terminals
②
MENU button
③
CHANNEL - (Operate ) button
④
CHANNEL + (Operate ) button
⑤
VOLUME - button
⑥VOLUME + button
⑦REMOCON window
⑧INDICATOR lamp (TIMER / POWER)
⑨POWER button
3
4
5
6
11
10
13
14
7
8
1
2
9
12
15 ⑨
POWER key
⑩
INPUT key
⑪
CHANNEL select key
⑫
V-CHIP key
⑬
FUNCTION key
⑭
EXIT key
⑮
VCR / DVD control key

No.51833
A
V-N29220
6
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power supply cord.
2. Remove the 7 screws marked !
!!
!and 2 screws marked "
""
"as
shown in Fig.1.
3. Withdraw the REAR COVER toward you.
[CAUTION]
"When reinstalling the rear cover, carefully push it inward after
inserting the MAIN PWB into the rear cover groove.
REMOVING THE MAIN PW BOARD
"After removing the rear cover.
1. Pick this side of the MAIN PWB and raise one slightly, take off
the PWB stopper marked #
##
#from the cabinet bottom.
2. Pull out the MAIN PWB as it is.
(If necessary, take off the wire clamp and connectors, etc.)
REMOVING THE SPEAKER
"After removing the MAIN PW board.
1. Remove the 2 screws marked $
$$
$as shown in Fig.1.
2. Withdraw the speaker backward.
3. 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 MAIN PWB. (Refer to REMOVING THE MAIN
PWB).
2) Erect the chassis vertically so that you can easily check the
back side of the MAIN PW Board.
[CAUTION]
"When erecting the MAIN PWB, be careful so that there will be no
contacting with other PW Board.
"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.51833
A
V-N29220
7
FRONT CABINET
CRT SOCKET PWB
(Within MAIN PWB)
SPEAKER
REAR COVER
Fig.1
A
CONTROL KNOB
MAIN PWB
B
D
PB STOPPER C
SPEAKER
D

No.51833
A
V-N29220
8
MEMORY IC REPLACEMENT
1. Memory IC
This model use a memory IC.
This memory IC stores data for proper operation of the 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
Initial value must be entered into the new IC.
(3) Power on
Connect the power cord to the outlet and switch on the power.
(4) System constant check and setting
1) Press
SLEEP TIMER key and, while the indication of “SLEEP TIMER 0
MIN.” is being displayed, press DISPLAY key and VIDEO STATUS key
on the remote control unit simultaneously.
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 MENULEFT/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.
SERVICE MENU
PICTURE SOUND
GAME
LOW LIGHT HIGH LIGHT
RF AFC CHK
VCO
(
CW
)
SELECT BY EXIT BY
OPERATE BY EXIT
Fig.1
SYSTEM CONSTANT
MODEL :
********
****************
********
V-CHIP : YES
CAN V-CHIP : YES
********
****************
********
-
*****
**********
*****
SELECT BY EXIT BY
OPERATE BY EXIT
Fig.2
Indicated Model No.

No.51833
A
V-N29220
9
TABLE 1 (System Constant setting) Setting value
Setting item Setting content AV-N29220/R AV-N29220/S
MODEL Display the each application model Comfortable model name
V-CHIP YES YES
CAN V-CHIP YES YES
TABLE 2 (User setting value)
Setting item Setting value
1. Use remote controller keys
POWER
CHANNEL
CHANNEL PRESET
VOLUME
INPUT (TV/VIDEO)
OFF
CH 02
See OPERATING INSTRUCTIONS.
10
TV
DISPLAY
SLEEP TIMER
VIDEO STATUS
HYPER SURROUND
OFF
0
STANDARD
OFF
2. Setting of MENU
TINT
COLOR
PICTURE
BRIGHT
DETAIL
CENTER
CENTER
CENTER
CENTER
CENTER
NOISE MUTING
SET VIDEO STATUS ON ALL CENTER
BASS
TREBLE
BALANCE
MTS
TV SPEAKER
CENTER
CENTER
CENTER
STEREO
ON
SET CLOCK
ON/OFF TIMER
LANGUAGE
CLOSED CAPTION
BACKGROUND
Unnecessary to set
NO
SPANISH
OFF
BLACK
AUTO TUNER SETUP
CHANNEL SUMMARY
V-CHIP
SET LOCK CODE
TUNER MODE : AIR
Unnecessary to set
OFF
Unnecessary to set
YES NO
YES NO

No.51833
A
V-N29220
10
SERVICE ADJUSTMENTS
ADJUSTMENT PREPARATION
1. You can make the necessary adjustments for this unit with
either the Remote Control Unit or With the adjustment
tools 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 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 STANDARD
BASS, TREBLE,
BALANCE CENTER
HYPER SURROUND OFF
TINT, COLOR,
PICTURE, BRIGHT,
DETAIL CENTER
ADJUSTMENT EQUIPMENT
1. DC voltmeter (or digital voltmeter)
2. Oscilloscope
3. Signal generator (Pattern generator)［NTSC］
4. Remote control unit
5. TV audio multiplex signal generator.
6. Frequency counter
ADJUSTMENT ITEMS
Adjustment items Adjustment items Adjustment items
B1 POWER
SUPPLY WHITE BALANCE
(Low Light) MTS INPUT LEVEL check
IF VCO WHITE BALANCE
(High Light) MTS STEREO VCO
RF. AGC SUB BRIGHT MTS SAP VCO
FOCUS SUB CONTRAST MTS FILTER check
V. SIZE SUB COLOR MTS
SEPARATION
H. POSITION SUB TINT
MAIN PWB
CRT SOCKET PWB
(
Within MAIN PWB ASS'Y
)
U
T
TP-E
POWER
(
SOLDER SIDE
)
TOP
FRONT
IC421
Q522
HV
UPPER : FOCUS
LOWER : SCREEN
U
T
TUNER
IC201
IC702IC701
F901
IC921
T522
MPX 51
T131 CW
TP-12B
31
CW
R926
F902 TP-91
(B1)
PW
DEG.
CRT EARTH
(BRAIDED ASS'Y)
E1
TP-R
S
STEREO
AV IN OUT
S-IN
TP-E
( )
R927
VOL+ VOL- CH+ CH- MENU
MEMORY
ADJUSTMENT LOCATIONS

No. 51833
A
V-N29220
11
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.
"PICTURE････････････････････ This sets the setting values (adjustment values) of the VIDEO/CHROMA and DEFLECTION circuits.
"SOUND ･････････････････････ This sets the setting values (adjustment values) of the AUDIO circuit.
"GAME･･･････････････････････ This is used when the GAME MODE is adjusted.
"LOW LIGHT･･････････････････ This sets the setting values (adjustment values) of the WHITE BALANCE circuit.
"HIGH LIGHT ･････････････････ This sets the setting values (adjustment values) of the WHITE BALANCE circuit.
"RF AFC CHK･････････････････ This is used when the IF VCO is adjusted. [Do not adjust]
"VCO (CW) ･･･････････････････ This is used when the IF VCO is adjusted.
3. Basic Operations of the SERVICE MENU
(1) How to enter the SERVICE MENU.
Press SLEEP TIMER key and, while the indication of “SLEEP TIMER 0 MIN.” is being displayed, press DISPLAY key and VIDEO
STATUS key on the remote control unit simultaneously to enter the SERVICE MENU screen ①shown in the next figure page.
(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
●GAME
●LOW LIGHT ●HIGH LIGHT
●RF AFC CHK
●VCO(CW)
(3) Enter the any setting ( adjustment ) mode
"PICTURE and SOUND mode
1) If select any of PICTURE or SOUND 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 ④is displayed, and the PICTURE
or SOUND setting can be performed.
"GAME, LOW LIGHT, HIGH LIGHT, RF AFC CHK and VCO (CW) mode
1) If select any of GAME / LOW LIGHT / HIGH LIGHT / RF AFC CHK / VCO (CW) items, and the LEFT / RIGHT key is pressed from
SERVICE MENU ( MAIN MENU ), the screens ⑤⑥⑦⑧⑨will be displayed as shown in figure page later.
2) Then the settings or verifications can be performed.

No. 51833
A
V-N29220
12
SELECT BY EXIT BY
IT
EXIT
BRIGHT EXIT BY
IT
BRIGHT
EXIT
***
******
***
***
******
*** *
**
*** ***
** ***** ***
** ***
SELECT BY
OPERATE BY EXIT BY
IT
1. BRIGHT
EXIT
STATUS
***
******
***
********
****************
********
EXIT BY
IT
HIGH LIGHT
EXIT
***
******
***
EXIT BY
IT
TOO HIGH
ABOVE REFERENCE
BELOW REFERENCE
TOO LOW
SYNC : YES
EXIT
SELECT BY
OPERATE BY EXIT BY
IT
RF AFC
FINE
STATUS
EXIT
①
①①
①
SERVICE MENU (MAIN MENU)
②
②②
②
SCREEN
⑦
⑦⑦
⑦
HIGH LIGHT MODE
***
******
***
⑨
⑨⑨
⑨
VCO (CW) MODE
⑤
⑤⑤
⑤
GAME MODE
SELECT BY
OPERATE BY EXIT BY
IT
TINT
COLOR
PICTURE
BRIGHT
DETAIL
EXIT
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
⑧
⑧⑧
⑧
RF AFC CHK MODE[DO NOT ADJUST]
ON
********
****************
********
⑥
⑥⑥
⑥
LOW LIGHT MODE
③
③③
③
PICTURE MODE
***
******
***
④
④④
④
SOUND MODE
SELECT BY
OPERATE BY EXIT BY
IT
1. IN LEVEL
EXIT
STATUS
***
******
***
********
****************
********
SERVICEMENU
PICTURE SOUND
GAME
LOW LIGHT HIGH LIGHT
RF AFC CHK
VCO(CW)
SELECT BY EXIT BY
OPERATE BY
IT
EXIT

No. 51833
A
V-N29220
13
(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.
(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. IN LEVEL
STATUS
EXIT
***
******
***
********
****************
********
SOUND MODE
SELECT BY
OPERATE BY EXIT BY
IT
1. BRIGHT
EXIT
STATUS
***
******
***
********
****************
********
PICTURE MODE
INITIAL
SETTING VALUE
↓(Adjust)
SETTING VALUE
SETTING
ITEM
SELECT BY
OPERATE BY EXIT BY
IT
TINT
COLOR
PICTURE
BRIGHT
DETAIL
EXIT
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
The letter of the selected
Items are displayed in yellow.
GAME MODE

No. 51833
A
V-N29220
14
INITIAL SETTING VALUE OF SERVICE MENU
1. Adjustment of theSERVICE MENU is made onthe basis of the initialsetting 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.7 EXT BRI., No.8 EXT PIC., No.11 EXT TINT and No.12 EXT COL. are linked to the items in
the TV MODE No.1 BRIGHT, No.2 PICTURE, No.5 TINT and No.6 COLOR, 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.7, 8, 11 and 12) are adjusted in the video mode, the setting values in each item are revised independently.
No. Setting (Adjustment) items Variable range initial setting value
1. BRIGHT 0 ～127 64
2. PICTURE 0 ～127 77
3. TV DTL(TV DETAIL) 0 ～63 26
4. TV BPF(TV B.P.FILTER) 0 / 1 0
5. TINT 0 ～127 66
6. COLOR 0 ～127 50
7. EXT BRI.(EXT.BRIGHT) ±25 (-2)
8. EXT PIC.(EXT.PICTURE) ±25 (±0)
9. EXT DTL(EXT.DETAIL) 0 ～63 26
10. EXT BPF(EXT.B.P.FILTER) 0 / 1 0
11. EXT TINT ±25 (±0)
12. EXT COL.(EXT.COLOR) ±25 (+1)
13. V SIZE 0 ～63 38
14. V CENT.(V.CENTER) 0 ～7 0
15. H POS.(H.POSITION) 0 ～31 18
16. OSD HP (OSD H POSITION) 0 ～31 23
17. OSD VP (OSD V POSITION) 0 ～15 14
18. H. AFC 0 / 1 0
19. RF AGC 0 ～63 40
"SOUND MODE
No. Setting (Adjustment) item Variable range Initial setting value
1. IN LEVEL (INPUT LEVEL) 0～63 29
2. FH MON. (FM MONITOR) 0 / 1 0
3. ST VCO (STEREO VCO) 0～63 20
4. PILOT (PILOT CANCELER) 0 / 1 0
5. FILTER 0～63 25
6. LOW SEP. (LOW SEPARATION) 0～63 32
7. HI SEP. (HI SEPARATION) 0～63 16
8. 5FH MON. (5FH MONITOR) 0 / 1 0
9. SAP VCO 0～63 14
10. FIL. OFF. ±10 0

No. 51833
A
V-N29220
15
"GAME MODE
Setting (Adjustment) item Variable range Initial setting value
TINT ±20 ±0
COLOR ±20 ±0
PICTURE ±20 -10
BRIGHT ±20 -5
DETAIL ±15 +5
"LOW LIGHT MODE
Setting (Adjustment) item Variable range initial setting value
R CUTOFF
G CUTOFF
B CUTOFF
0 ～255
0 ～255
0 ～255
20
20
20
"HIGH LIGHT MODE
Setting (Adjustment) item Variable range initial setting value
G DRIVE
B DRIVE
0 ～255
0 ～255
128
128
"RF AFC CHECK MODE
Setting (Adjustment) item Variable range initial setting value
RF AFC
FINE
ON / OFF
-77 ～+77
ON
±××
DO NOT
ADJUST

No. 51833
A
V-N29220
16
■
■■
■ADJUSTMENTS
B1 POWER SUPPLY
Item Measuring
instrument Test point Adjustment part Description
Check of
B1 POWER
SUPPLY
DC Voltmeter TP-91 (B1)
TP-E("
""
")
1.Receive a black-and-white signal.
2.Connect the DC Voltmeter to TP-91 (B1) and TP-E("
""
").
3.Confirm that the voltage is DC134V .
ADJUSTMENT OF VIDEO / DEF. CIRCUIT
Item Measuring
instrument Test point Adjustment part Description
IF VCO
adjustment Signal generator CW TRANSF. (T131)
[VCO(CW)] MODE
"Under normal conditions, no adjustment is required.
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.
RF. AGC
adjustment No.19 RF AGC 1.Receive a broadcast.
2.Select “No.19 RF AGC” of the PICTURE MODE.
3.Press the MUTING key and turn off color.
4.With the MENU LEFT key, get noise in thescreen 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.
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.
+2V
-2.5V
EXIT BY
IT
TOO HIGH
ABOVE REFERENCE
BELOW REFERENCE
TOO LOW
SYNC : YES
EXIT
YELLOW

No. 51833
A
V-N29220
17
Item Measuring
instruments Test point Adjustment part Description
V.SIZE
Adjustment Signal generator No.13 V.SIZE 1.Receive a crosshatch signal.
2.Select No.13 V.SIZE in the PICTURE MODE.
3.Set the initial setting value of No.13 V.SIZE with the LEFT /
RIGHT key of the MENU.
4.Adjust No.13 V.SIZE until the vertical screen size is 92%.
H.POSITION
Adjustment Signal generator No.15 H.POS 1.Receive a crosshatch signal.
2.Select the No.15 H.POS of the PICTURE MODE.
3.Set the initial setting value of the No.15 H.POS with the LEFT /
RIGHT key of the MENU.
4.Adjust the No.15 H.POS until the screen will be horizontally
centered.
Screen size
Picture size 100%
Screen
size
92%
Picture
size
100%

No. 51833
A
V-N29220
18
Item Measuring
instruments Test point Adjustment part Description
WHITE
BALANCE
(Low Light)
Adjustment
Signal
generator BRIGHT
R. CUTOFF
G. CUTOFF
B. CUTOFF
SCREEN VR
[In HVT]
1.Receive a black-and-white signal.(Color off)
2.Select the LOW LIGHT MODE from the SERVICE MENU.
3.Set the initial setting value of BRIGHT with the LEFT / RIGHT
key of the remote control unit.
4.Set the initial setting value of R CUTOFF, G CUTOFF and B
CUTOFF with the ④to ⑨key of the remote control unit.
5.Display a single horizontal line by pressing the ①key of the
remote control unit.
6.Turn thescreen VR all the way to the left.
7.Turn the screen VR gradually to the right from the left until
either one of the red, blue or green colors appears faintly.
8.Adjust the two colors which did not appear until the single
horizontal line that is displayed becomes white using the ④
to ⑨keys of the remote control unit.
9.Turn the screen VR to where the single horizontal line glows
faintly.
10.Press the ②key to return to the regular screen.
＊The ③EXIT key is the cancel key for the WHITE
BALANCE.
WHITE
BALANCE
(High Light)
Adjustment
Signal
generator G. DRIVE B. DRIVE 1.Receive a monoscope pattern signal.
2.Select the【HIGH LIGHT】MODE in the SERVICE MENU.
3.Set the initial setting value of G DRIVE and B DRIVE with the
⑤, ⑥, ⑧and ⑨keys of the remote control unit.
4.Adjust the screen until it becomes white using the ⑤, ⑥, ⑧
and ⑨keys of the remote control unit.
＊The ③(EXIT) key is the cancel key for the WHITE
BALANCE.
[HIGH LIGHT] MODE
EXIT BY
IT
HIGH LIGHT
EXIT
***
******
*** ***
******
***
G DRIVE B DRIVE
Remote Control Unit
①key : H.LINE ON
②key : H.LINE OFF
③key : EXIT
⑤key : G DRIVE ▲
⑥key : B DRIVE ▲
⑧key : G DRIVE ▼
⑨key : B DRIVE ▼
[LOW LIGHT] MODE
EXIT BY
IT
EXIT
***
******
***
***
******
***
BRIGHT
***
******
***
BRIGHT
***
******
***
12 3
6
987
54
REMOTE CONTROL UNIT
H.LINE ON EXITH.LINE OFF
R CUTOFF B CUTOFFG CUTOFF
R CUTOFF B CUTOFFG CUTOFF
BRIGHT G CUTOFF
B CUTOFF
R CUTOFF

No. 51833
A
V-N29220
19
Item Measuring
instruments Test point Adjustment part Description
SUB
BRIGHT
Adjustment
No.1 BRIGHT 1.Receive a broadcast.
2.Select No.1 BRIGHT of the PICTURE MODE.
3.Set the initial setting value of the No.1 BRIGHT with the LEFT /
RIGHT key of the MENU.
4.If the brightness is not best with the initial setting value, make
fine adjustment of the No.1 BRIGHT until you get the optimum
brightness.
SUB
CONTRAST
Adjustment
No.2 PICTURE 1.Receive a broadcast.
2.Select No.2 PICTURE of the PICTURE MODE.
3.Set the initial setting value of the No.2 PICTURE with the
LEFT / RIGHT key of the MENU.
4.If the contrast is not best with the initial setting value, make fine
adjustment of the No.2 PICTURE until you get the optimum
contrast.
[ Method of adjustment without measuring instrument ]
1.Receive a broadcast.
2.Select “No.6 COLOR” of the PICTURE MODE.
3.Set the initial setting value of the “No.6 COLOR” with the
LEFT/RIGHT key of the MENU.
4.If thecolor is not the best with the Initial setting value, make fine
adjustment of the “No.6 COLOR” until you get the optimum
color.
SUB COLOR
adjustment Signal generator
Oscilloscope
Remote
control unit
TP-R
TP-E(#
##
#)
[CRT
SOCKET
PWB]
No.6 COLOR
[ Method of adjustment using measuring instrument ]
1.Input the full field color bar signal (75% white).
2.Select “No.6 COLOR” to the PICTURE MODE.
3.Set the initial setting value of the “No.6. COLOR” with the
LEFT/RIGHT key of the MENU.
4.Connect the oscilloscope between TP-R and TP-E.
5.Adjust COLOR and bring the value of (A) intheillustration tothe
voltage +16V (VW-R).
Y
W
WW
W
Cy
G
Mg
R
RR
R
B
(A) 0V
(-)
(+)

No. 51833
A
V-N29220
20
Item Measuring
instruments Test point Adjustment part Description
[ Method of adjustment without measuring instrument ]
1.Receive a broadcast.
2.Select “No.5 TINT” of the PICTURE MODE.
3.Set the initial setting value of the “No.5 TINT” with the
LEFT/RIGHT key of the MENU.
4.If the tint is not the best with the initial setting value, make fine
adjustment of the “No.5 TINT” until you get the optimum tint.
SUB TINT
adjustment Signal generator
Oscilloscope
Remote
control unit
TP-R
TP-E(#
##
#)
[CRT
SOCKET
PWB]
No.5 TINT
[ Method of adjustment using measuring instrument ]
1.Input the full field color bar signal (75% white).
2.Select “No.5 TINT” to the PICTURE MODE.
3.Set the initial setting value of the “No.5 TINT” with the
LEFT/RIGHT key to the MENU.
4.Connect the oscilloscope between TP-R and TP-E.
5.
Adjust TINT and bring the value of (B) in the illustration to the
voltage +9V (VW-Y).
ADJUSTMENT OF MTS CIRCUIT
Item Measuring
instrument Test point Adjustment part Description
MTS INPUT
LEVEL
check
No.1 IN LEVEL 1.Select the “No.1 IN LEVEL” of the SOUND MODE.
2.Verify that the “No.1 IN LEVEL” is set at its initial setting value.
MTS
STEREO
VCO
adjustment
Signal
generator
Frequency
counter
R OUT
[AUDIO OUT] No.2 FH MON.
No.3 ST VCO
1.Receive a RF signal (nonmodulated sound signal) from the
antenna terminal.
2.Select the “No.2 FH MON.” of SOUND MODE, and change the
setting value from 0 to 1.
3.Connect the Frequency Counter to R OUT RCA pin of the
AUDIO OUT.
4.Select the “No.3 ST VCO”.
5.Set the initial setting value of the “No.3 ST VCO” with the
LEFT/RIGHT key of the menu.
6.Adjust the “No.3 ST VCO” so that the Frequency Counter will
display 15.73kHz±0.1kHz.
7.Select the “No.2 FH MON.” of the SOUND MODE, and reset
the setting value from 1 to 0.
Y
YY
Y
W
WW
W
Cy
G
Mg
R
B
(B)
0V
(-)
(+)