JVC AV-21TS2EK Service Manual

JVC AV-21TS2EK
General Information
Also Covers
AV-21TS2EN
JE Chassis
Matrix
Item
Safety Precautions .......................................................... JVC AV-28WFR1 EKS
Other Adjustments ................................................................. JVC AV-29TS2 EK
Recommended Safety Parts
Item Part No. Description
[AV-21TS2EK]
1 CM12774-A01-E REAR COVER
5 CQ40319-001-E INST BOOK
10 AEEMP003-185 POWER CORD
11 CM46618-A01-E POWER CORD CLAMP
12 CM22875-014-E RATING LABEL
13 CM23158-002-E RATING LABEL For GBR/ESP
9500pF 2000V ±2.5%
C1521 QFZ0125-952N MPP CAP.
0.25µF 200V ±3%
C1524 QFZ0119-254S MPP CAP.
0.15µF 200V ±3%
C1531 QFZ0119-154S MPP CAP.
C1902 QCZ9034-472A C CAP. 4700pFAC400V
C1903 QCZ9034-472A C CAP. 4700pFAC400V
C1904 QCZ9034-472A C CAP. 4700pFAC400V
C1992 QCZ9041-471A C CAP. 470pFAC400V
C1993 QCZ9041-332A C CAP. 3300pFAC400V
C8901 QFZ9040-474N MF CAP. 0.47µFAC275V
C8904 QFZ9040-473N MM CAP. 0.047µFAC275V
CP1952 ICP-N50-Y I.C. PROTECT
CP1953 ICP-N50-Y I.C. PROTECT
D1901 D3SBA60 DIODE BRIDGE
F8901 QMF51D2-3R15J1 FUSE 3.15A
FR1551 QRZ0054-4R7M F R 4.7Ω 1/4W
FR1552 QRH017J-1R0M F R 1Ω 1W
FR1553 QRH017J-1R0M F R 1Ω 1W
FR1954 QRH017J-1R2M F R 1.2Ω 1W
FR1968 QRZ0054-331M F R 330Ω 1/4W
IC1902 TLP721F (D4-GR) I.C. (PH.COUPLER)
L01 CELD018-005J7 DEGAUSSING COIL
LF8901 AEELF002-001 LINE FILTER
Q1521 BU2506DX POWER TRANSISTOR H OUT
R0403 QRZ0054-470M F R 47Ω 1/4W
R1585 QRV141F-2941AY MF R 2.94kΩ 1/4W
R1586 QRV141F-1582AY MF R 15.8kΩ 1/4W
R1991 QRZ0057-825 C R 8.2MΩ 1W
S8901 QSP4K21-C01 PUSH SWITCH MAIN POWER
SK3001 CE42535-001J1 C.R.T.SOCKET
T1551 QQH0018-001 FLYBACK TRANSF.
T1901 CETS085-001J4 SWITCH.TRANSF.
TH8901 CEKP010-001J2 W.P. THERMISTOR
V01 A51EAL155X01 PICTURE TUBE (ITC)
[AV-21TS2EN Only]
5 CQ40317-001-E INST BOOK For GBR/GER/FRA/NED/ITA/ESP
6 CQ40318-001-E INST BOOK For FIN/NOR/DEN/SWE/POR
10 AEEMP001-185 POWER CORD
12 CM23156-A04-E RATING LABEL For GBR/GER/ITA
SAFETY PRECAUTIONS - See Matrix
FEATURES
1. The TELETEXT SYSTEM has a built-in
FASTEXT, TOP & WST system.
2. By means of AUTO SET, the TV stations can
be selected automatically and the TV
channels can also be rearranged automati-
cally.
FEATURES
3. Built-in ECO (ECONOMY, ECOLOGY)
1.The TELETEXT SYSTEM has a built-in
MODE
FASTEXT & WST system.
In accordance with the brightness in a room,
2. By means of AUTO SET, the TV stations can
the brightness and/or contrast of the picture
be selected automatically and the TV channels
can be adjusted automatically to make the
can also be rearranged automatically.
optimum picture which is easy on the eye.
3. Built-in ECO (ECONOMY, ECOLOGY) MODE
4. The audio circuit has a built-in A2/NICAM
In accordance with the brightness in a room,
stereo system.
the brightness and I or contrast of the picture
5. The EXT-2 TERMINAL (21-pin Euro
can be adjusted automatically to make the
connector) can select the output circuit as
optimum picture which is easy on the eye.
shown in Fig.
4. The audio circuit has a built-in NICAM stereo
system.
5. The EXT-2 TERMINAL (21-pin Euro connector)
can select the output circuit as shown in Fig.
MAIN DIFFERENCE PARTS LIST
(See table opposite).
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
See Model Vol
1. Unplug the power cord.
2. Remove the 6 screws marked X as shown in
the figure.
8
3. Withdraw the rear cover toward you.
6
REMOVING THE CHASSIS
• After removing the rear cover.
1. Slightly raise the both sides of the chassis by
hand and remove the two claws under the both
sides of the chassis from the front cabinet.
2. Withdraw the chassis backward. (If necessary,
take off the wire clamp, connectors etc.)
REMOVING THE AV TERMI. BOARD
• After removing the rear cover.
1. While raising the claw marked A, remove the
top of the AV TERMI. board slightly in the
direction of arrow B as shown in Fig. 1.
2. Pressing the claws marked C, remove the AV
TERMI. Board in the arrow direction marked D
P
as shown in Fig. 2 (Opposite).
P
P
REMOVING THE CONTROL BASE
K
M 1. While pushing down the claws marked E
M
remove the CONTROL BASE in the arrow
M
direction F as shown in Fig. 3. (If necessary,
take off the wire clamp, connectors etc.)
REMOVING THE SPEAKER
J
• After removing the rear cover.
J
1. Remove the two screws marked Y as shown in
J
figure.
J
J 2. Follow the same steps when removing the
other hand speaker.
CHECKING THE PW BOARD
J 1. To check the back side of the PW Board.
F
1) Pull out the chassis. (Refer to REMOVING THE
F
CHASSIS).
J
2) Erect the chassis vertically so that you can
easily check the back side of the PW Board.
[CAUTION]
• When erecting the chassis, be careful so that
there will be no contacting with other PW
Board.
• Before turning on power, make sure that the
wire connector is properly connected.
WIRE CLAMPING AND CABLE TIES
1. Be sure to 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.
SETTING VALUES OF SYSTEM CONSTANT
SET
Setting item
1. COUNTRY
Setting content
Setting item
2. INCH
Setting value [AV-21TS2EN]
EN
21"
Setting value [AV-21TS2EK]
UK
21"
USER SETTING VALUES - See Matrix
SERVICE MENU SETING ITEMS
Setting item:
1. IF
Setting value:
1. VCO
2. DELAY POINT
Setting item:
2. V/C
Setting value:
1. CUT OFF
2. DRIVE
3. BRIGHT
4. CONT.
5. COLOUR(PAL./SECAM/NTSC)
6. TINT(NTSC)
7. BLACK OFFSET(SECAM)
8. SHARP (Do not adjust)
9. TEXT(RGB) CONT (Do not adjust)
10. DC TRAN RATE (Do not adjust)
11. BLACK STRETCH (Do not adjust)
12. B.S.OFF (Do not adjust)
Setting item:
3. AUDIO (Do not adjust)
Setting value:
1. CONC LIMIT
2. A2 ID THR
Setting item:
4. DEF.
Setting value:
2. V-SHIFT
3. V-SIZE
4. H-CENT
7. V-S. CR (Fixed)
10. ABL POINT (Do not adjust)
11. ABL GAIN (Do not adjust)
Setting item:
5. VSM PRESET (COOL/NORMAL/WARM)
Setting value:
1. BRIGHT
2. CONT.
3. COLOUR
4. SHARP
5. TINT
6. R DRIVE
7. B DRIVE
8. BASS
9. TREBLE
Setting item:
6. VPS (Do not adjust)
Setting value:
VPS
Setting item:
7. AUTO PROGRAM (Do not adjust)
Setting value:
ON/OFF
BEFORE STARTING SERVICE ADJUST-
MENTS - See Matrix
BASIC OPERATION OF SERVICE MENU -
See Matrix