JVC AV-29BD3EN Service Manual

JVC AV-29BD3 EK
General Information
Also Covers
JVC AV-29BD3 EN
JE Chassis
Matrix
Item
Safety Precautions ............................................................. JVC AV-28WFR1 EKS
Features ................................................................................... JVC AV-25BD3 EK
Other Adjustments .................................................................... JVC AV-29TS2 EK
Recommended Safety Parts
Item Part No. Description
AV-29BD3EN
1 LC10079-001B-U REAR COVER
3 LC10093-001B-U CHASSIS BASE
5 LCT0133-001A-U INST. BOOK For ENG/GER/FRA/NED/ITA/ESP
6 LCT0134-001A-U INST. BOOK For FIN/NOR/DEN/SWE/POR
10 AEEMP001-185 POWER CORD
11 CM46618-A01-E POWER CORD CLAMP
12 LC20076-001A-U RATING LABEL For ENG/GER/ITA
13 LC20077-002A-U RATING LABEL For ENG/ESP
C1521 QFZ0152-4001 MPP CAP. 4000pF 1.5kVH±2.5%
C1522 QFZ0152-9501 MPP CAP. 9500pF 1.5kVH±2.5%
C1523 QFP32GJ-223 PP CAP. 0.022µF 400V
C1525 QFZ0119-684 MPP CAP. 0.68µF
C1531 QFZ0119-154 MPP CAP. 0.15µF
C1902 QCZ9086-472 C CAP. 4700pFAC400V
C1903 QCZ9086-472 C CAP. 4700pFAC400V
C1904 QCZ9086-472 C CAP. 4700pFAC400V
C1992 QCZ9079-471 C CAP. 470pFAC250V
C1993 QCZ9079-332 C CAP. 3300pFAC250V
C8901 QFZ9040-474N MF CAP. 0.47µF AC275V
C8904 QFZ9040-473N MF CAP. 0.047µF AC275V M
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 QRZ9017-4R7 4.7Ω 1/4W J
FR1552 QRZ9021-1R0 1.0Ω 1W J
FR1553 QRZ9021-1R0 1.0Ω 1W J
FR1954 QRZ9022-R82 0.82Ω 1W K
IC1902 TLP721F(D4-GR) IC. (PH.COUPLER)
L01 CELD020-004J7 DEGAUSSING COIL
LF8901 CE42144-001J2 LINE FILTER
Q1521 BU2508AX POWER TRANSISTOR
R0403 QRZ9017-470 F R 47Ω 1/4W
R1466 QRJ146J-2R2X C R 2.2Ω 1/4W
R1585 QRA14CF-2941Y MF R 2. 94kΩ 1/4W
R1586 QRA14CF-1582Y 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 CETH019-00AJ1 H.V. TRANSF. (SERVICE)
T1901 CETS083-001J7 SWITCH. TRANSF.
TH8901 CEKP010-001J2 W. P. THERMISTOR
V01 A68ESF002X011 ITC PICTURE TUBE(Inc. DY. PC, WED)
AV-29BD3EK Only
5 LCT0131-001A-U INST. BOOK
10 AEEMP001-185A POWER CORD
12 LC20075-002A-U RATING LABEL
SAFETY PRECAUTIONS - See Matrix
FEATURES - See Matrix
MAIN DIFFERENCE PARTS LIST - See book-
marks section
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power cord
2. Remove the 12 screws marked "X" as shown
in the figure.
See Model Vol
3. Withdraw the rear cover toward you.
REMOVING THE CHASSIS
8
• After removing the rear cover.
8
1. Slightly raise the both sides of the chassis by
6
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. Remove the claws marked "C" under the AV
TERMI. Board remove the AV TERMI. Board in
the arrow direction marked "D" as shown in Fig. 2
REMOVING THE CONTROL BASE
1. While pushing down the claws marked "E",
remove the CONTROL BASE in the arrow
direction "F" as shown in Fig. 3. (If necessary,
take off the wire clamp, connectors etc.)
REMOVING THE SPEAKER ADAPTER
J
• After removing the rear cover.
200V±3%
1. Remove the two screws marked "Z" as shown
200V±3%
in figure.
P
2. Follow the same steps when removing the
P other hand speaker adapter.
P
REMOVING THE SPEAKER
K
• After removing the rear cover.
K
1. Remove the 4 screws marked "Y" as shown in
M
figure.
2. Follow the same steps when removing the
other hand speaker.
CHECKING THE PW BOARD
1. To check the back side of the PW Board.
1) Pull out the chassis. (Refer to REMOVING THE
CHASSIS).
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
H OUT
Board.
J • Before turning on power, make sure that the
wire connector is properly connected.
J
F
WIRE CLAMPING AND CABLE TIES
F
1. Be sure to clamp the wire.
J
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
REPLACEMENT OF MEMORY ICs - See Matrix
SETTING VALUES OF SYSTEM CONSTANT
SET
Setting item
1. COUNTRY
Setting content
Setting item Item
2. INCH Adjustment of SUB COLOUR II
Setting content Measuring instrument
Signal Generator
Oscilloscope
Setting value Remote Control Unit
AV-29BD3EN: EN (29")
AV-2SBD3EK: UK (29") Test point
TP-47B
USER SETTING VALUES - See Matrix TP-E
[CRT SOCKET PWB]
SERVICE MENU SETTING ITEMS - See Matrix
Adjustment part
BEFORE STARTING SERVICE ADJUSTMENTS 5.COLOUR (PAL~NTSC)
- See Matrix
Description
BASIC OPERATION OF SERVICE MENU - See [Method of adjustment using measuring instru-
Matrix ment]
For B1 POWER SUPPLY CHECK, FOCUS, IF Adjustment part
CIRCUIT, and VSM PRESET ADJUSTMENTS - PAL COLOUR
See Matrix
Description
VIDEO/CHROMA CIRCUIT ADJUSTMENT - See (PAL COLOUR)
Matrix
For Adjustments of WHITE BALANCE, SUB
BRIGHT, SUB CONT., SUB COLOUR I, SUB
TINT, BLACK OFFSET (SECAM) - See Matrix.
1. Receive a PAL full field colour bar signal
(75% white).
2. Select 2.V/C from the SERVICE MENU.
3. Select 7.COLOUR with the FUNCTION UP/
DOWN key.
4. Set the initial setting value for PAL COLOUR
with the FUNCTION - or + key.
5. Connect the oscilloscope between TP-47B
and TP-E
6. Adjust PAL COLOUR and bring the value of
(A) in the illustration to 0V (voltage differ-
ence between white and blue).
7. Press the MENU key and memorize the
setting value.
Adjustment part
SECAM COLOUR (AV-29BD3EN)
Description
(SECAM COLOUR)
1. Receive a SECAM full field colour bar signal
(75% white).
2. Set the initial setting value of SECAM
COLOUR with the FUNCTION -/+ key.
3. Adjust SECAM COLOUR and bring the
value of (A) of the illustration to +5V (W~B).
4. Press the MENU key and memorize the
setting value.
Adjustment part
NTSC 3.58 COLOUR
Description
(NTSC 3.58 COLOUR)
1. Input a NTSC 3.58MHz COMPOSITE
VIDEO signal (full field colour bar with 75%
white) from the EXT terminal.
2. Set the initial setting value of NTSC 3.58
COLOUR with the FUNCTION -/+ key.
3. Adjust NTSC 3.58 COLOUR and bring the
value of (A) of the illustration to 0V (W~B).
4. Press the MENU key and memorize the
setting value.
(NTSC 4.43 COLOUR)
1. When NTSC 3 58 is set, NTSC 4.43 will be
automatically set at the respective values.
The End