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AV-21A4
No. 56017
1
BASIC CHASSIS
CG
SERVICE MANUAL
COLOUR TELEVISION
AV-21A4(BK)
AV-21A4
COPYRIGHT
© 2000 VICTOR COMPANY OF JAPAN, LTD.
No. 56017
May 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-21A4
AV-21A4-BK


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AV-21A4
No. 56017
2
AV-21AT
AV-21A4(BK)
!
!
!
!
!
REF. NO.
PART NAME
DESCRIPTION
PART No.
PART No.
s EXPLODED VIEW PARTS LIST (Page 28)
!
V01
A51LMV20X
A51LEC065X
PICTURE TUBE
DY01
CE20336-00A
CE20332-00A
DEF YOKE
!
T1522
QQH0069-001
QQH0070-001
H.V. TRANSF.
1
GG10047-002A-H
GG10047-005A-H
FRONT CABINET ASSY
!
15
LC20377-010A-H
CM22960-074-H
RATING LABEL
!
18
QMP40D0-200J5
QMPR010-200-E2
POWER CORD
or QMP40D0-200J3
or QMPR010-200-K2
s PRINTED WIRING BOARD PARTS LIST (Page 30)
--
SCG-1247A-H2
SCG-1245A-BK
MAIN PWB ASSY
R1161
NRSA02J-102X
CH MG R
1k
1/10W
J
R1162
NRSA02J-122X
CH MG R
1.2k
1/10W
J
R1163
NRSA02J-222X
CH MG R
2.2k
1/10W
J
R1164
NRSA02J-221X
CH MG R
220
1/10W
J
R1165
NRSA02J-220X
CH MG R
22
1/10W
J
R1166
NRSA02J-821X
CH MG R
820
1/10W
J
R1771
NRSA02J-821X
CH MG R
820
1/10W
J
NRSA02J-222X
CH MG R
2.2k
1/10W
J
R1773
NRSA02J-122X
CH MG R
1.2k
1/10W
J
C1161
NCB21HK-103X
CH C CAP.
0.01
µF
50V K
C1164
NCB21HK-103X
CH C CAP.
0.01
µF
50V K
C1165
NCB21HK-103X
CH C CAP.
0.01
µF
50V K
C1166
NCB21HK-104X
CH C CAP.
0.1
µF
50V K
C1525
QFZ0200-103
MPP CAP.
0.01
µF
1.5kVH
±3%
QFZ0200-962
MPP CAP.
9600pF
1.5kVH
±3%
C1527
QFZ0199-224
MPP CAP.
0.22
µF
250V J
QFZ0199-254
MPP CAP.
0.25
µF
250V J
C1582
QFZ0199-224
MPP CAP.
0.22
µF
250V J
QFZ0199-274
MPP CAP.
0.27
µF
250V J
!
T1522
QQH0069-001
QQH0070-001
H.V. TRANSF.
L1551
QQLZ018-430
QQLZ018-540
HEATER CHOKE
D1705
L-132XND-T16
LED (ORG)
SLR-342MG-T16
LED (GRE)
PARTS DIFFERENCE TABLE
The different parts between AV-21AT and AV-21A4(BK) are described below:


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AV-21A4
No. 56017
3
AV-21AT
AV-21A4(BK)
!
!
!
!
!
REF. NO.
PART NAME
DESCRIPTION
PART No.
PART No.
s PRINTED WIRING BOARD PARTS LIST-Continued (Page 30)
Q1161
2SC2412K/QR/-X
CHIP TRANSISTOR
Q1710
DTC124EKA-X
DIGI TRANSISTOR
IC1701
MN1873287JA
MN1873287JC
IC (MICROCOMPUTER)
IC1702
AT24C08-21FTR
AT24C08-21F4BK
IC (MEMORY)
(Service)
CF1161
SFE5.74MC2
C TRAP
CF1162
SFE5.74MC2
C TRAP
TU1001
QAU0185-001
QAU0186-001
TUNER
s PACKING PARTS LIST (Page 34)
1
GG10056-017A-H
CP11434-063-H
PACKING CASE
5
RM-C364-1H
RM-C368-1H
REMOCON UNIT
!
7
LCT0748-001A-H
LCT0730-001A-H
INST BOOK
!
8
LCT0749-001A-H
DIGEST MANUAL
--
ATEAB001-00A
MATCHING BOX


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AV-21A4
No. 56017
4
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
Stereo System
Bilingual in A2
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
Rating: AC110 ~ 240V, 50/60Hz
Operating: AC90 ~ 260V, 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-C368-1H (Battery size : AA/R06/UM-3
× 2)
Design & specifications are subject to change without notice.
SPECIFICATIONS (Page 2)


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AV-21A4
No. 56017
5
Setting item
Setting value
Setting item
Setting value
SUB POWER
ON
PICTURE MODE (VSM)
BRIGHT
CHANNEL POSITION
1 POSITION
OFF TIMER
OFF
LANGUAGE
THAI
AUTO SHUTOFF
OFF
VOLUME
Appropriate sound volume
ECO SENSOR
OFF
TV/VIDEO
TV
BLUE BACK
OFF
ON SCREEN DISPLAY
POSITION NUMBER DISPLAY
ON TIMER
PR1
0:00
COLOUR SYSTEM
AUTO PAL
CHILD LOCK
OFF
SOUND SYSTEM
B / G
PICTURE BOOSTER
OFF
BILINGUAL MODE
I
SETTING OF SYSTEM CONSTANT SET (Page 7)
Table 1
USER SETTING VALUES (Page 7)
Table 2
Refer to OPERATING
INSTRUCTION
CHANNEL PRESET
SPECIFIC SERVICE INSTRUCTIONS
Setting item
Setting contents
Setting value
COLOUR
TRIPLE
BILINGUAL
YES
TUNER
MU
ECO SENSOR
YES
LANGUAGE
E/T
B/B SOUND
OFF
LOCK
180
COLOUR AUTO
NO
QSS
MINT
ALC
NO
TEXT RATE
20
AMP TUNER
YES
VNR
NO
MULTI.
TRIPLE
PAL
YES
NO
MU
MA
YES
NO
E/T
E
ON
OFF
YES
10
20
...
230
250
240
YES
NO
MINT
MQSS
YES
NO
10
20
40
80
YES
NO
YES
NO