JVC AV-29VT31P
Manual de Servicio

SECTION 3 DISASSEMBLY
3.1 DISASSEMBLY PROCEDURE 3.1.1 REMOVING THE TWIN PORT BASS BLASTER UNIT [AV-29VT31/P] � Unplug the power supply cord. (1) Disconnect the TWIN PORT BASS BLASTER UNIT's cord from the rear of the TV set. (2) Remove the TWIN PORT BASS BLASTER UNIT by pulling it upwards. NOTE: After removing the TWIN PORT BASS BLASTER UNIT, proceed to the following procedure. 3.1.2 REMOVING THE REAR COVER � Unplug the power cord. (1) Remove the 16 screws [A] as shown in Fig.1. (2) Withdraw the REAR COVER toward you. CAUTION: When reinstalling the rear cover, carefully push it inward after inserting the MAIN PWB into the REAR COVER groove. 3.1.3 REMOVING THE CHASSIS (CHASSIS BASE AND CONTROL BASE) � Remove the REAR COVER. (1) Slightly raise the both sides of the CHASSIS by hand and remove the 2 claws [B] under the CHASSIS from the front cabinet as shown in Fig.1. (2) Withdraw the CHASSIS backward. (If necessary, take off the wire clamp, connector's etc.) NOTE: When conducting a check with power supplied, be sure to confirm that the CRT earth wire is connected to the CRT SOCKET PWB and the MAIN PWB. 3.1.4 REMOVING THE AV TERMINAL BOARD � Remove the REAR COVER. (1) Remove the 4 screws [C] as shown in Fig.1. (2) When you pull out the AV TERMINAL BOARD in the direction of arrow [D] as shown in Fig.1, it can be removed. 3.1.5 REMOVING THE CONTROL BASE � Remove the REAR COVER. � Remove the CHASSIS. (1) While pushing down the 2 claws [E] as shown in Fig. 2 and pull out the CONTROL BASE in the direction of arrow [F] as shown in Fig. 2, the control base can be removed. (If necessary, take off the wire, connector's etc.) 3.1.6 REMOVING THE SPEAKER � Remove the REAR COVER. (1) Remove the 2 screws [G] as shown in Fig.1. (2) Withdraw the SPEAKER backward. (3) Follow the same steps when removing the other hand SPEAKER. 3.1.7 CHECKING THE MAIN PW BOARD � To check the back side of the MAIN PWB. (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. CAUTIONS: � 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 CRT earth wire and other connectors are properly connected. � When repairing, connect the DEG. COIL to the DEG. connector on the MAIN PWB. 3.1.8 WIRE CLAMPING AND CABLE TYING (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.

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