AV-21F9
FEATURES
l New chassis design enables use of an interactive on-screenl Built-in ECO MODE (ECONOMY, ECOLOGY)
control.In accordance with the brightness in a room, the brightness and/
l Wide range voltage for AC power input.or contrast of the picture can be adjusted automatically to make
l With AUDIO / VIDEO / S-VIDEO INPUT & OUTPUT terminals.the optimum picture which is easy on the eye.
l MUTING button can reduce the audio level to zero instantlyl Built-in ON .TIMER & RETURN +.
l Functional remote control to operate TV set (for channel select,l By means of ALC (Auto Level Control), the audio output is auto-
volume control, power ON/OFF, etc.) from a distance.matically controlled at a constant level.
l I2C bus control utilizes single chip ICs for IF, V/C (Video/Chroma)
and VSM (Video Status Memory).
l By means of AUTO PROGRAM, the TV stations can be selected
automatically and the TV channels can also be rearranged au-
tomatically.
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVERREMOVING THE SPEAKER
1. Be sure that the AC power cord is unplugged.l After removing the rear cover.
2. Remove the 8 screws marked "A". (See Fig. 4.)1. Remove the 2 screws marked "H". (See Fig. 4.)
3. Withdraw the rear cover backward.2. Follow the same step for removing the other hand speaker.
REMOVING THE CHASSIS BASECHECKING THE MAIN PW BOARD
l After removing the rear cover.To check the back side of the Main PW Board, follow the next steps.
1. Slightly raise both sides of the chassis base by hand and re-1. Pull out the chassis base. (Refer to "REMOVING THE CHAS-
move the 2 claws under both sides of the chassis base from theSIS BASE".)
front cabinet. (See Fig. 4.)2. Erect the chassis base vertically so that you can easily check
2. Withdraw the chassis base backward.the back side of the Main PW Board.
(If necessary, take off the wire clamp, connectors etc.)CAUTION:
l When erecting the chassis base, be careful so that there will be
REMOVING THE AV TERMINAL BOARDno contacting with other PW Board.
l After removing the rear cover.l Before turning on power, make sure that the CRT earth wire
1. Remove the 2 screws marked "B". (See Fig. 4.)and other connectors are properly connected.
2. While raising the claw marked "C", remove the top of the AlVWhen repairing, connect the Deg. coil to the DEG. connector
TERMINAL board. (See Fig. 1.)on the Main PW Board.
3. Pressing the claws "D", remove the AV TERMINAL board back-
ward (in the arrow direction marked "E"). (See Fig. 2.)WIRE CLAMPING AND CABLE TYING
1. Be sure to clamp the wire.
REMOVING THE CONTROL BASE2. Never remove the cable tie used for tying the wires together.
l After removing the rear cover and the chassis base.Should it be inadvertently removed, be sure to tie the wires with
1. While pushing down the claws marked "F", remove the CON-a new cable tie.
TROL BASE forward (in the arrow direction marked "G "). (See
Fig. 3.)
(If necessary, take off the wire clamp, connectors, etc.)
[FRONT SIDE]
AV TERMINAL BOARD
FCONTROL BASE
[REAR SIDE]
C
D
CEG
D[REAR SIDE]CHASSIS
BASE
AV TERMINAL BOARD
Fig. 1Fig. 2Fig. 3
No. 560374 |
ACEC
JVC
