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AV-21AT
No. 56013B
1
BASIC CHASSIS
CG
SERVICE MANUAL
COLOUR TELEVISION
AV-21AT(B)
AV-21AT
COPYRIGHT
© 2000 VICTOR COMPANY OF JAPAN, LTD.
No. 56013B
Nov. 2000
HOW TO IDENTIFY MODEL
While referring to the illustration given below, identify model name on the rating label affixed to the rear cover.
This service manual mainly consists of the following items:
· The items which differ from those for the AV-21AT service manual.
· The initial value for each setting item.
For details other than those described in this manual, please refer to the following service manual.
Reference Service Manual: AV-21AT Service Manual (No. 56013, May 2000)
Note: The page in parentheses shows the one for the AV-21AT service manual (No. 56013, May 2000).
MODEL NO.
XXXXX XXXXXXX
XXXXXXX XXXXX
XXXXXX
XXXXX
XXX XXXXX XXXXX
XXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXX
SERIAL No.
XXXXXX­XXX
XXXX XX XXXX
XXX XX XXXX
Identify model name
Basic model name
AV-21AT
AV-21AT/B


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AV-21AT
No. 56013B
2
AV-21AT
AV-21AT(B)
!
!
!
!
!
REF. NO.
PART NAME
DESCRIPTION
PART No.
PART No.
s EXPLODED VIEW PARTS LIST (Page 28)
!
V01
A51LMV20X
PICTURE TUBE
A51JSY63X15/CM/
PICTURE TUBE
ITC Type
DY01
CE20336-00A
DEF YOKE
!
L01
QQW0006-001
QQW0077-001
DEGAUSSING COIL
8
CE42153-00AJ1
WEDGE ASSY
(x4)
9
A75034-B
PC MAGNET
or CE42378-00B
--
LC40312-011A-H
RUBBER WASHER
(x6)
--
CHGG0021-0A-G
CONNECTOR ASSY
--
LC30601-001A
DEG HOLDER
s PRINTED WIRING BOARD PARTS LIST (Page 30-)
--
SCG-1247A-H2
SCG-1272A-H2
MAIN PWB ASSY
R1904
QRL03EJ-151X
OM R
150
3W
J
C1525
QFZ0200-103
MPP CAP.
0.01
µF
1.5kVH
±3%
QFZ0200-972
MPP CAP.
9700pF
1.5kVH
±3%
C1527
QFZ0199-224
MPP CAP.
0.22
µF
250V
J
QFZ0199-274
MPP CAP.
0.27
µF
250V
J
C1582
QFZ0199-224
MPP CAP.
0.22
µF
250V
J
QFZ0199-204
MPP CAP.
0.2
µF
250V
J
L1551
QQLZ018-430
QQLZ018-460
HEATER CHOKE
PARTS DIFFERENCE TABLE
The different parts between AV-21AT and AV-21AT(B) are described below:


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AV-21AT
No. 56013B
3
SPECIFICATIONS (Page 2)
Item
Content
Dimensions (W
× H × D)
502mm
× 451mm × 480.5mm
Mass
19.5kg
TV RF System
B / G, I, D / K, K1
Colour System
TV Mode
PAL / SECAM
VIDEO Mode
PAL / SECAM / NTSC3.58 / NTSC4.43
Receiving Frequency VHF (VL)
46.25MHz ~ 168.25MHz
VHF (VH)
175.25MHz ~ 463.25MHz
UHF
471.25MHz ~ 863.25MHz
CATV
q Cable TVs of Mid (X-Z, S1-S10)
Super (S11-S20) & Hyper (S21-S41) bands receivable
Intermediate
VIF Carrier
38.0MHz
Frequency
31.5MHz (6.5MHz)
SIF Carrier
32.0MHz (6.0MHz)
32.5MHz (5.5MHz)
33.5MHz (4.5MHz)
Colour Sub Carrier Frequency
PAL (4.43MHz)
SECAM (4.40625MHz / 4.25MHz)
NTSC (3.58MHz / 4.43MHz)
Aerial Input Terminal
75
Unbalanced
Power Input
AC110 ~ 240V, 50 / 60Hz
Power Consumption
105W (Max.)/68W (Avg.)
Picture Tube
Visible size : 51cm measured diagonally
High Voltage
26.5kV
± 1.5kV (at zero beam current)
Speaker
5cm
× 9 cm Oval type × 2
Audio Output
5W (Monaural)
Input
Video
1Vp-p, 75
Audio
500mVrms (
-4dBs), High impedance
Output
Video
1Vp-p, 75
Audio
500mVrms (­4dBs), Low impedance
Headphone Jack
Stereo mini jack (3.5ø)
Remote Control Unit
RM-C364-1H (Battery size : AA/R06/UM-3
× 2)
Design & specifications are subject to change without notice.


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AV-21AT
No. 56013B
4
SETTING OF SYSTEM CONSTANT SET (Page 7)
Table 1
USER SETTING VALUES (Page 7)
Table 2
SPECIFIC SERVICE INSTRUCTIONS
Setting item
Setting value
Setting item
Setting value
SUB POWER
ON
PICTURE MODE (VSM)
BRIGHT
CHANNEL POSITION
1 POSITION
VNR
OFF
OFF TIMER
OFF
LANGUAGE
ENGLISH
VOLUME
Appropriate sound volume
AUTO SHUTOFF
OFF
TV/VIDEO
TV
ECO SENSOR
OFF
ON SCREEN DISPLAY
POSITION NUMBER DISPLAY
BLUE BACK
OFF
COLOUR SYSTEM
AUTO PAL
ON TIMER
PR1
0:00
SOUND SYSTEM
B / G
CHILD LOCK
OFF
Refer to OPERATING
INSTRUCTION
CHANNEL PRESET
Setting item
Setting contents
Setting value
COLOUR
TRIPLE
BILINGUAL
NO
TUNER
MU
ECO SENSOR
YES
LANGUAGE
E/R/C
B/B SOUND
OFF
LOCK
180
COLOUR AUTO
NO
QSS
MINT
ALC
NO
TEXT RATE
20
AMP TUNER
NO
VNR
YES
EW-PIN IC
NO
MULTI.
TRIPLE
PAL
YES
NO
MU
MA
YES
NO
E/R/C/U
E/R/C
E/R/U
E/C
ON
OFF
YES
10
20
...
230
250
240
YES
NO
MINT
MQSS
YES
NO
10
20
40
80
YES
NO
YES
NO
YES
NO


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AV-21AT
No. 56013B
5
SERVICE ADJUSTMENTS
s Initial Setting Value
s IF CIRCUIT ADJUSTMENT -- Adjustment of DELAY POINT (Page 15)
s V/C (VIDEO/CHROMA) CIRCUIT ADJUSTMENT (Page 15)
[SUB MENU 2. V/C]
Adjustment of SUB COLOUR-II (Page 18)
Adjustment of SUB TINT-II (Page 19)
Adjustment part
Description
5. COLOUR
PAL COLOUR
Value (A) in the figure: Set to +6V (W & G).
SECAM COLOUR
Value (A) in the figure: Set to +10V (W & G).
NTSC 3.58 COLOUR
Value (A) in the figure: Set to +2V (W & G).
Adjustment part
Description
6. TINT
NTSC 3.58 TINT
Value (B) in the figure: Set to +2V (W & Cy).
Variable
Initial setting
range
value
Setting (Adjustment) Item
DELAY POINT
(AGC TAKE-OVER)
0 ~ 127
43
Colour system
Variable
Initial setting value
Setting item
range
PAL
SECAM
NTSC 3.58
NTSC 4.43
1. CUT OFF (R / G / B)
-128 ~ +127
-50
bb
b
2. DRIVE (R / B)
-64 ~ +63
0
bb
b
3. BRIGHT
-128 ~ +127
0
bb
b
4. CONT.
-64 ~ +63
0
bb
b
5. COLOUR (P / S / N3 / N4)
-64 ~ +63
0
bb
b
6. TINT (N3 / N4) TV / VIDEO
-64 ~ +63
0 / 0
0 / 0
7. SECAM BL ADJUST
-32 ~ +31
0
bb
b
8. SHARP
TV / VIDEO
-32 ~ +31
-5 / +15
bb
b
: Do not adjust.