JVC C-N21102/S User manual

No.51830
Aug. 2001
C-N21102
C-N21210
A
V-N21202
1COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD. Aug. 2001
C-N21102/S
C-N21210/S
AV-N21202/S
CONTENTS
!SPECIFICATIONS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･････････････････････････････
･･････････････････････････････････････････････････････････
･････････････････････････････ 2
!SAFETY PRECAUTIONS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･･････････････････････
･･････････････････････････････････････････････
･･･････････････････････ 3
!FEATURES････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･･
･･････
･･･ 4
!MAIN DIFFERENCE LIST ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･･････････････････････
･･････････････････････････････････････････････
･･･････････････････････ 4
!SPECIFIC SERVICE INSTRUCTIONS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･････････････
･･････････････････････････
･････････････ 5
!SERVICE ADJUSTMENTS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･････････････････････
････････････････････････････････････････････
･･････････････････････ 9
!PARTS LIST････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･
･･
･25
★
OPERATING INSTRUCTIONS
★
STANDARD CIRCUIT DIAGRAM ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････
････････････････････････････････
････････････････ 2-1
SERVICE MANUAL
COLOR TELEVISION
BASIC CHASSIS
FV4

No. 51830
C-N21102
C-N21210
A
V-N21202
2
SPECIFICATIONS
Contents
Items C-N21102/S C-N21210/S AV-N21202/S
Dimensions (W×
××
×H×
××
×D) 50.3cm×45.2cm×49.3cm
Mass 19.6 kg 19.9 kg
TV RF System CCIR(M)
Color Sound System NTSC 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
45.75MHz
41.25MHz
3.58MHz
Power Input 120V AC, 60Hz
Power Consumption 87W
Picture Tube 21” (51cm) Measured Diagonally
High Voltage 26.5kV±1kV (at zero beam current)
Speaker 5×9cm
Oval type×15×9cm Oval type×2
Audio Power Output 1W 1W+1W
Input Video Input
Audio Input 1Vp-p, 75Ω(RCA pin jack)
500mVrms ( -4dBs ) ,High Impedance (RCA pin jack)
Variable Audio Output More than 0～
1550mVrms(+6dBs)
Low impedance (400Hz
when modulated 100%)
(RCA pin jack)
Headphone Jack 3.5mm stereo mini jack
(Sound is monaural) 3.5mm stereo mini jack (Sound is stereo)
Antenna Terminal 75(VHF/UHF) Terminal, F-Type Connector
Remote Control Unit RM-C205
(AA/R6/UM-3 battery×2) RM-C307 (AA/R6/UM-3 battery×2)
Design & specifications are subject to change without notice.
(54MHz～804MHz)

No. 51830
C-N21102
C-N21210
A
V-N21202
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. 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 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.
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 10kΩ2W resistor to the anode
button.
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.
10. 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, screwheads, 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
1100V 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 1500Ω10W 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.).
0.15
μ
F AC-TYPE
1500
Ω
10W
GOOD
EARTH
GROUND
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART
AC VOLTMETER
(HAVING 1000
Ω
/V,
OR MORE SENSITIVITY)
11. High voltage hold down circuit check.
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".
A V
This mark shows afast
operating fuse, the
letters indicated below
show the rating.
POWER CORD
REPLACEMENT WARNING.
Connecting the white line side of power
cord to “WHT” character side.

No.51830
C-N21102
C-N21210
A
V-N21202
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.
"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.
"Variable Audio output terminal. (Only for AV-N21202/s)
"Built-in MTS system. (Only for AV-N21202/s)
MAIN DIFFERENCE LIST
[Between C-N21102/S, C-N21210/S and AV-N21202/S]
Monaural model Monaural model Stereo model
!
!!
!
Model
Parts Name C-N21102/S C-N21210/S AV-N21202/S
MAIN PWB SFV-1069A-M2 SFV-1068A-M2 SFV-1070A-M2
!FRONT CABINET GQ10020-003A-A LC10109-018A-A GQ10020-002A-A
!REAR COVER GQ10013-003A-A LC10108-002E-A GQ10013-002A-A
REMOTE CONTROL UNIT RM-C205-1C ←RM-C307-1A
PACKING CASE GQ10009-017A-A LC10181-016A-A GQ10009-011A-A

No. 51830
C-N21102
C-N21210
A
V-N21202
5
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power supply cord.
[For C-N21102/S]
2. Remove the 9 screws marked !
!!
!and a screw marked "
""
"as
shown in Fig.1.
[For C-N21210/S ]
2. Remove the 5 screws marked !
!!
!and a screw marked "
""
"as
shown in Fig.1.
[For AV-N21202/S]
2. Remove the 9 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 $
$$
$.
[For C-N21102/S and C-N21210/S]
SPEAKER (×1)
[AV-N21202/S]
SPEAKER (×2)
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
backside 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. 51830
C-N21102
C-N21210
A
V-N21202
6
FRONT CABINET
CRT SOCKET PWB
(Within MAIN PWB)
SPEAKER
REAR COVER
Fig.1
A
CONTROL KNOB
MAIN PWB
B
D
PB STOPPER
This exploded view describes
about the AV-N21202.
Although the C-N21102/S and C-
N21210/S is slightly different from
this figure, you can use this figure
for disassembling the C-
N21102/S and C-N21202/S in the
same steps.
D
C
DEG. COIL
BRAIDED ASS’Y

No. 51830
C-N21102
C-N21210
A
V-N21202
7
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 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 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
MODEL :
*******
**************
*******
V-CHIP : YES
CAN V-CHIP : YES
********
****************
********
-
*****
**********
*****
SELECT BY EXIT BY
OPERATE BY EXIT
Fig.2
SERVICE MENU
PICTURE SOUND
GAME
LOW LIGHT HIGH LIGHT
RF AFC CHK
VCO
(
CW
)
SELECT BY EXIT BY
OPERATE BY EXIT
Fig.1
[Only for AV-N21202/S]
Indicated Model No.

No. 51830
C-N21102
C-N21210
A
V-N21202
8
TABLE 1 (System Constant setting)
Setting value
Setting item Setting content C-N21102/S
C-N21210/S AV-N21202/S
MODEL Display the each application model Comformable 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
OFF
0
STANDARD
2. Setting of MENU
TINT
COLOR
PICTURE
BRIGHT
DETAIL
CENTER
CENTER
CENTER
CENTER
CENTER
BASS
TREBLE
BALANCE
MTS
TV SPEAKER
CENTER
CENTER
CENTER
STEREO
ON
NOISE MUTING
SET VIDEO STATUS ON ALL CENTER
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
[Only for AV-N21202/S]
YES NO
YES NO

No. 51830
C-N21102
C-N21210
A
V-N21202
9
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 (Only for AV-N21202/S)
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
(AV-N21202/S)
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
MENU
CH-CH+VOL-
VOL+
F901
IC921
S
MONO
T522
T131 CW
31
CW
R926
F902
TP-91
(B1)
TP-E
( )
PW
DEG.
CRT EARTH
(BRAIDED ASS'Y)
E1
TP-R
AV IN OUT
INDICATOR LAMP
(TIMER/POWER)
REMOCON
RECEIVER
S
STEREO
MPX
TP-12B
(AV-N21202)
(C-N21102)
(C-N21210)
(AV-N21202)
AV-N21202
:AV IN ONLY(MONO)
(
(
:AV IN OUT (STEREO)
C-N21102
C-N21210
ADJUSTMENT LOCATIONS

No. 51830
C-N21102
C-N21210
A
V-N21202
10
BASIC OPERATION 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. [Only for AV-N21202/S]
"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 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[Only for AV-N21202/S]
●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. 51830
C-N21102
C-N21210
A
V-N21202
11
SERVICEMENU
SELECT BY
OPERATE BY EXITBY
IT
PICTURE
GAME
LOW LIGHT HIGH LIGHT
RF AFC CHK
VCO
(
CW
)
EXIT SELECT BY EXITBY
IT
EXIT
BRIGHT EXIT BY
IT
BRIGHT
EXIT
*
**
**
**
**
**
*
*
**
**
**
**
**
* *
**
**
**
**
**
* *
**
**
**
**
**
*
SELECT BY
OPERATE BY EXIT BY
IT
1.BRIGHT
EXIT
STATUS
*
**
**
**
**
**
*
*
**
**
**
***
****
***
**
**
**
**
**
**
**
*
EXITBY
IT
HIGH LIGHT
EXIT
*
**
**
**
**
**
*
EXITBY
IT
TOO HIGH
ABOVE REFERENCE
BELOW REFERENCE
TOO LOW
SYNC : YES
EXIT
SELECT BY
OPERATE BY EXITBY
IT
RF AFC
FINE
STATUS
EXIT
①
①①
①SERVICE MENU
(
MAIN MENU
)
②
②②
②SCREEN
⑦
⑦⑦
⑦HIGH LIGHT MODE
*
**
**
**
**
**
*
⑨
⑨⑨
⑨VCO
(
CW
)
MODE ⑤
⑤⑤
⑤GAME MODE
SELECT BY
OPERATE BY EXIT BY
IT
TINT
COLOR
PICTURE
BRIGHT
DETAIL
EXIT
*
**
**
**
**
**
*
*
**
**
**
**
**
*
*
**
**
**
**
**
*
*
**
**
**
**
**
*
*
**
**
**
**
**
*
⑧
⑧⑧
⑧RF AFC CHK MODE
[
DO NOT ADJUST
]
ON
*
**
**
**
***
****
***
**
**
**
**
**
**
**
*
⑥
⑥⑥
⑥LOW LIGHT MODE
③
③③
③PICTURE MODE
*
**
**
**
**
**
*
④
④④
④SOUND MODE
SELECT BY
OPERATE BY EXIT BY
IT
1. IN LEVEL
EXIT
STATUS
*
**
**
**
**
**
*
*
**
**
**
***
****
***
**
**
**
**
**
**
**
*
SOUND
[
Onl
y
for AV-N21202/s
]
[
Onl
y
for AV-N21202/s
]

No. 51830
C-N21102
C-N21210
A
V-N21202
12
(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
[Only for AV-N21202/S]
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
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
GAME MODE
The letter of the selected
Items are displayed in yellow.

No. 51830
C-N21102
C-N21210
A
V-N21202
13
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.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.
initial setting value
No. Setting (Adjustment) items Variable range C-N21102/s
C-N21210/S AV-N21202/S
1. BRIGHT 0 ～127 64 64
2. PICTURE 0 ～127 95 95
3. TV DTL(TV DETAIL) 0 ～63 26 26
4. TV BPF(TV B.P.FILTER) 0 / 1 0 0
5. TINT 0 ～127 70 70
6. COLOR 0 ～127 48 48
7. EXT BRI.(EXT.BRIGHT) ±25 (-1) (±0)
8. EXT PIC.(EXT.PICTURE) ±25 (±0) (±0)
9. EXT DTL(EXT.DETAIL) 0 ～63 26 26
10. EXT BPF(EXT.B.P.FILTER) 0 / 1 0 0
11. EXT TINT ±25 (±0) (+1)
12. EXT COL.(EXT.COLOR) ±25 (±0) (+3)
13. V SIZE 0 ～63 38 38
14. V CENT.(V.CENTER) 0 ～7 00
15. H POS.(H.POSITION) 0 ～31 20 20
16. OSD HP (OSD H POSITION) 0 ～31 26 26
17. OSD VP (OSD V POSITION) 0 ～15 14 14
18. H. AFC 0 / 1 0 0
19. RF AGC 0 ～63 40 40
20. OSC SEL. 0/1 ――― 0
"SOUND MODE [Only for AV-N21202/S]
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. 51830
C-N21102
C-N21210
A
V-N21202
14
"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 CHK MODE
Setting (Adjustment) item Variable range initial setting value
RF AFC
FINE
ON / OFF
-77 ～+77
ON
±××
DO NOT
ADJUST

No. 51830
C-N21102
C-N21210
A
V-N21202
15
■
■■
■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 MUTE 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 MUTE 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. 51830
C-N21102
C-N21210
A
V-N21202
16
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. 51830
C-N21102
C-N21210
A
V-N21202
17
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 the screen 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 black-and-white signal. (Color off)
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.
[LOW LIGHT] MODE
BRIGHT EXIT BY
IT
BRIGHT
EXIT
***
******
***
***
******
***
***
******
*** ***
******
***
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
[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 ▼

No. 51830
C-N21102
C-N21210
A
V-N21202
18
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.
SUB
COLOR
Adjustment
No.6 COLOR 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 the color is not best with the initial setting value, make fine
adjustment of the No.6 COLOR until you get the optimum
color.
SUB TINT
Adjustment No.5 TINT 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 best with the initial setting value, make fine
adjustment of the No.5 TINT until you get the optimum tint.
ADJUSTMENT OF MTS CIRCUIT [Only for AV-N21202/S]
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 (non-modulated 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.

No. 51830
C-N21102
C-N21210
A
V-N21202
19
Item Measuring
instrument Test point Adjustment part Description
MTS SAP
VCO
adjustment
Signal
generator
Frequency
counter
【
【【
【MPX】
】】
】
Connector
【
【【
【4】
】】
】pin SDA
【
【【
【3】
】】
】pin GND
R OUT
[AUDIO OUT]
No.8 5FH MON.
No.9 SAP VCO
1. Receive a RF signal (non modulated sound signal) from the
antenna terminal.
2. Connect between pin【4】of【MPX】connector and GND (Pin
【3】of【MPX】connector) through 1MΩResistor.
3. Select the “No.8 5FH MON.” of the SOUND MODE, and reset
the setting value from 0 to 1.
4. Connect the Frequency Counter to R OUT RCA pin of the
AUDIO OUT.
5. Select the “No.9 SAP VCO”.
6. Set the initial setting value of “No.9 SAP VCO” with the
LEFT/RIGHT key of the menu.
7. Adjust the “No.9 SAP VCO” so that the Frequency Counter will
display 78.67kHz±0.5kHz.
8. Select the “No.8 5FH MON.” of the SOUND MODE, and reset
the setting value from 1 to 0.
MTS FILTER
check No.5 FILTER 1. Select the “No.5 FILTER” of the SOUND MODE.
2. Verify that the “No.5 FILTER” is set at its initial setting value.
MTS
SEPARATION
adjustment
TV audio
multiplex
signal
generator
Oscilloscope
L OUT
R OUT
[AUDIO OUT]
No.6 LOW SEP.
No.7 HI SEP.
1. Input a stereo L signal (300Hz) from the TV audio multiplex
signal generator to the antenna terminal.
2. Connect an oscilloscope to L OUT RCA pin of the AUDIO OUT,
and display one cycle portion of the 300Hz signal.
3. Change the connection of the oscilloscope to R OUT RCA pin of
the AUDIO OUT, and enlarge the voltage axis.
4. Select the “No.6 LOW SEP.” of the SOUND MODE.
5. Set the initial setting value of the “No.6 LOW SEP.” with the
LEFT/RIGHT key of the menu.
6. Adjust the “No.6 LOW SEP.” so that the stroke element of the
300Hz signal will become minimum.
7. Change the signal to 3kHz, and similarly adjust the “No.7 HI
SEP.”.
L-Channel
signal waveform R-Channel crosstalk portion
Minimum
1 cycle

No. 51830
C-N21102
C-N21210
A
V-N21202
20
PURITY, CONVERGENCE
PURITY ADJUSTMENT
1. Demagnetize CRT with the demagnetizer.
2. Loosen the retainer screw of the deflection yoke.
3. Remove the wedges.
4. Input a green raster signal from the signal generator, and turn
the screen to green raster.
5. Move the deflection yoke backward.
6. Bring the long lug of the purity magnets on the short lug and
position them horizontally. (Fig.2)
7. Adjust the gap between two lugs so that the GREEN RASTER
will come into the center of the screen. (Fig.3)
8. Move the deflection yoke forward, and fix the position of the
deflection yoke so that the whole screen will become green.
9. Insert the wedge to the top side of the deflection yoke so that it
will not move.
10. Input a crosshatch signal.
11. Verify that the screen is horizontal.
12. Input red and blue raster signals, and make sure that purity is
properly adjusted.
CRT
WEDGE DEFLECTION
YOKE
P / C
MAGNETS
P
46
PURITY MAGNETS
Long lug
Short lug
Bring the long lug over the short lug
and position them horizontally.
(
FRONT VIEW
)
GREEN RASTER
CENTER
P : PURITY MAGNET
4 : 4 POLES (convergence magnets)
6 : 6 POLES (convergence magnets)
$P/C MAGNETS
Fig.1
Fig.3
Fig.2