JVC AV29W33/T Repair Manual

AV-29W33
AV-29W33B
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE TWIN PORT BASS BLASTER UNITREMOVING THE SPEAKER
[AV-29W33B/T only]After removing the rear cover.
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1. Remove the 2 screws marked as shown in Fig.1.
1. Unplug the power supply cord.�
2. Withdraw the speaker backward.
2. Disconnect the Twin Port Bass Blaster UnitOs cord from the rear of
3. Follow the same steps when removing the other hand speaker.
the TV set.
3. Remove the Twin Bass Blaster Unit by pulling it upwards.
[REMARK]CHECKING THE MAIN PW BOARD
After removing the Twin Port Bass Blaster Unit, proceed to the fol-1. To check the back side of the Main PWB.
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lowing procedure.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 Main PWB.
REMOVING THE REAR COVER[CAUTION]
When erecting the chassis, be careful so that there will be no con-
1. Unplug the power supply cord.Y
tacting with other PW Board.
2. Remove the 16 screws marked A as shown in Fig.1.
Before turning on power, make sure that the CRT earth wire and
3. Withdraw the Rear cover toward you.Y
other connectors are properly connected.
When repairing, connect the Deg. coil to the DEG. connector on the
[CAUTION]Y
Main PWB.
When reinstalling the rear cover, carefully push it inward after in-
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serting the Main PWB into the rear cover groove.
WIRE CLAMPING AND CABLE TYING
REMOVING THE CHASSIS (CHASSIS BASE AND1. Be sure to clamp the wire.
CONTROL BASE)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
After removing the rear cover.
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new cable tie.
1. Slightly raise the both sides of the chassis by hand and remove the
2 claws marked Å¡ under the chassis from the front cabinet as shown
in Fig.1.
2. Withdraw the chassis backward.
(If necessary, take off the wire clamp, connectorOs etc.)
When conducting a check with power supplied, be sure to confirm
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that the CRT earth wire is connected to the CRT SOCKET PWB
and the Main PWB.
REMOVING THE AV TERMINAL BOARD
After removing the rear cover.
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1. Remove the 4 screws marked � as shown in Fig.1.
2. When you pull out the AV Terminal board in the direction of arrow
marked � as shown in Fig.1, it can be removed.
REMOVING THE CONTROL BASE
After removing the rear cover and the chassis.
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1. While pushing down the 2 claws marked ´ as shown in Fig. 2 and
pull out the Control base in the direction of arrow marked I as
shown in Fig. 2, the control base can be removed.
(If necessary, take off the wire, connectorOs etc.)
6No. 52080