Specific Service Instructions - JVC AV-21F1P Service Manual

AV-21F1P
FEATURES
New chassis design enables use of an interactive on-screen control.
Wide range voltage for AC power input.
With AUDIO / VIDEO INPUT & OUTPUT terminals.
MUTING button can reduce the audio level to zero instantly.
Functional remote control to operate TV set (for channel select, volume control, power ON/OFF, etc.) from a distance.
I 2 C bus is used to control V/C & DEF 1 chip IC, tuner, etc.
By means of AUTO PROGRAM, the TV stations can be selected automatically and the TV channels can also be rearranged
automatically.
Built-in RETURN +.
Built-in RTC (real-time clock) enables ON/OFF timer settings.

SPECIFIC SERVICE INSTRUCTIONS

DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the AC power cord.
2. Remove the 6 screws marked "A" and 2 screws marked "B".
3. Withdraw the rear cover backward.
REMOVING THE MAIN PW BOARD
After removing the rear cover.
1. Slightly raise both sides of the Main PW Board by hand and
withdraw it backward.
(If necessary, take off the wire clamp, connectors etc.)
REMOVING THE SPEAKER
After removing the rear cover.
1. Remove the 2 screws marked "C".
2. Follow the same step for removing the other hand speaker.
CHECKING THE MAIN PW BOARD
To check the back side of the Main PW Board, follow the next steps.
1. Pull out the Main PW Board. (Refer to "REMOVING THE MAIN
PW BOARD".)
2. Erect the Main PW Board vertically so that you can easily check
its back side.
CAUTION:
When erecting the Main PW Board, be careful so that there will
be no contacting with other PW Board.
Before turning on power, make sure that all connectors are prop-
erly connected.
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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