[TechAssist] Re: JVC Model# AV-27D303 Service Mode
- From: <agower@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 27 Apr 2005 23:29:12 -0700
No. 51867
AV-36P902
10
CAUTION AT DISASSEMBLY
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
" Unplug the power supply cord.
1. Remove the 15 screws marked ! as shown in Fig.2.
2. Remove the rear cover toward you.
* When reinstalling the rear cover, carefully push it inward after
inserting the chassis into the rear cover groove.
REMOVING THE CHASSIS
" After removing the rear cover.
1. Slightly raise the both sides of the chassis by hand and remove
the 2 claws under the both sides of the chassis from the front
cabinet.
2. Draw the chassis backward along the rail in the arrow direction
marked " as shown in the Fig.2.
(If necessary, take off the wire clamp, connector's etc.)
* 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 or DEF.POWER PWB.
REMOVING THE TERMINAL BOARD
" After removing the rear cover.
1. Remove the 5 screws marked # as shown in Fig.2.
2. When you pull out the TERMINAL BOARD in the direction of
arrow marked " as shown in Fig.2, it can be removed.
REMOVING THE CONTROL BASE
" After removing the rear cover and the chassis.
1. As shown in Fig.1. while pushing down the claws marked $.
2. Remove the CONTROL BASE in the arrow direction
marked%&.
( If necessary, take off the wire clamp, connectors etc. )
REMOVING THE SPEAKER / SPEAKER HOLDER
" After removing the rear cover and the chassis.
1. Remove the 2 screws marked 'as shown in Fig.2, then remove
the speaker holder toward you.
2. Remove the 2 screws marked (as shown in Fig.2.
3. Draw the speaker toward you.
4. Follow the same steps when removing the other hand speaker.
REMOVING THE DIGITAL IF PWB (MODULE)
" After removing the rear cover and terminal board.
1. Remove the 2 screws marked )as shown in Fig.2.
2. Remove the DIGITAL IF PWB in the arrow direction marked *
* If necessary, take off the wire clamp, connectors etc.
CHECKING THE PW BOARD
1. To check the backside of the circuit Board.
(1) Pull out the chassis. (Refer to REMOVING THE CHASSIS).
(2) Erect the chassis vertically so that you can easily check the
backside of the PW Board.
[CAUTION]
. When erecting the chassis, be careful so that there will be no
contacting with other PWB.
. Before turning on power, make sure that the CRT earth wire and
other connectors are properly 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.
SB
connector
Fig. 1
D
E
CONTROL
BASE
CHASSIS
BASE
POWER CORD
" Prior to disassembly, unplug the power code from the AC outlet
without fail.(Turn the power "off".)
" Short the SB connector (1) pin and (2) pin of the digital input
unit. (At the time of assembling)
" Before the rear cover is inserted into the cabinet, release the
short-circuit between the SB connector (1) pin and (2) pin of
the digital input unit.
" After releasing the short-circuit between the SB connectors, do
not turn the power on until the rear cover is inserted into the
cabinet.
* Negligence in carrying out the above steps may cause the
inactivation of the TV.
TERMINAL BOARD
36P902CP-S ( )
DIGITAL IF MODULE
SSB-7801A-M2
WJJ0247-001A
agower@xxxxxxxxxxxxx
Cordova TV
Adolph Gower
3415 Comet Court
Sacramento, Ca. 95827-2924
Phone: (916) 698-6565
Fax: (916) 363-8359
----- Original Message -----
From: "Mouton Electronics L.L.C." <moutons@xxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: 2005Äê4ÔÂ27ÈÕ 13:08
Subject: [TechAssist] JVC Model# AV-27D303 Service Mode
> How do you get into the service mode on this JVC I need to make some bias
> adjustments to get grey scale.
> Thanks
>
> Jason
> Moutons Electronics
>
>
>
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