Panasonic CT-34WX50 Service Manual ▷ View online
- 9 -
Service Hints
Before servicing
(1) Remove the screws fixing the rear cover (11 pcs.: Refer
to Fig. 1).
(2) Remove the rear cover by raising the chassis a little
and pulling to the rear
. (Refer to Fig. 2.)
*
At this time, disconnect the coupler P11, the ring
clamper, etc. as required to facilitate the pulling out of the
chassis.
clamper, etc. as required to facilitate the pulling out of the
chassis.
*
After completion of servicing, any disconnected couplers
and clampers must be restored to their original condition.
and clampers must be restored to their original condition.
In regard to inspection of A-Board
and D-Board
and D-Board
The A-Board and D-Board can be inspected from the pat-
tern side when the chassis is pulled out and tilted up.
(Refer to Fig. 3.)
tern side when the chassis is pulled out and tilted up.
(Refer to Fig. 3.)
*
At this time, disconnect the coupler P11, the clamp, etc.
as required to facilitate tilting of the chassis.
as required to facilitate tilting of the chassis.
*
When tilting the chassis, pay sufficient attention to the L-
Board at the neck of the picture tube
Board at the neck of the picture tube
Fig.1 Positions of the screws fixing the rear cover
Fig.2 How to tilt the chassis
Fig.3 Inspection of the A-Board and D-Board
1
2
10
5
9
11
6
7
1
2
3
4
8
1
2
Insert a cloth or similar so that
the Board will not have contact.
the Board will not have contact.
A-Board
D-Board
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P3
P2
P1
D3
8pin Cable
8pin Cable
D2
D1
3pin Cable
Inspection of the P-Board
As the P-Board can not be inspected from the pattern
side, refer to the pattern side/parts side of the circuit dia-
gram (Page 66, 67), and perform the inspection by bring-
ing the tester into contact with the jumper wires and
parts.
side, refer to the pattern side/parts side of the circuit dia-
gram (Page 66, 67), and perform the inspection by bring-
ing the tester into contact with the jumper wires and
parts.
Parts exchange for the
P-Board
(1) When parts are to be exchanged, first remove the screws
(3 screws: to Refer to Fig. 4) fixing the print holder.
(2) Next, remove the screws (3 screws: to :Refer to
Fig.4)
(3) Remove the P-Board from the D-Board (3 connectors: P1
to P3: Refer to Fig. 4), and then exchange the parts.
*
Pay attention to the earthing of HOT and COLD parts and
perform inspection.
perform inspection.
(1) Remove the rear panel fixing screw (6 screws: to )
and the fixing tabs (2 place). (Refer to Fig. 5)
(2) Tilt the H-Module to the front and pull it out, and then
exchange the H-Module.
Fig.4
Inspection of the P-Board
Fig.5
H-Module exchange
1
6
2
5
4
3
Front
Top View
Rear View
P-Board
Print Holder
2
1
3
5
6
4
Tab
H-Module
Rear Bracket
1
3
4
6
!
1
6
"#$%&$'($)($%($($%$
(($$$
!
*"+,-./''
- 11 -
Exchange method for CC-Module, U-Moudle, AG-Module, DG-Module and Q-Module
*Remove the H-Module in advance. (Refer to the preceding item)
(1) Remove the screw (1 screw: )
(2) Remove the lead wire.
(3) Remove the tab.
(4) Remove the module plate.
(5) Pull out each module.
(6) Exchange module.
1
Module Plate
U-Module
AG-Module
Tab
CC-Module
DD-Module
DG-Module
Lead Wire
1
U-Module
CC-Module
DG-Module
AG-Module
Q-Module
Fig. 7 Exchange of each module-2
$0
Fig. 6 Exchange of each module-1
(View from above)
(View from above)
- 12 -
Entry into service adjustment mode
Hold the "VOL -" button inside the door of the operation section of this unit pressed and press the "RECALL" button on the remote
control three times in a row (within 2 sec.). (Refer to Fig. 1.)
control three times in a row (within 2 sec.). (Refer to Fig. 1.)
Fig.1
Entry into service adjustment mode
At the time of service adjustment
As the values entered in service adjustment mode differ according to the set, perform adjustment operation in service adjustment
mode after the values for each item have been prepared.
mode after the values for each item have been prepared.
ACTION
CBL
DBS
RCVR
AUX
VCR
TV
DTV
DVD
AV-ADL
EXIT
VCR REC
GUIDE
MENU
NORMAL
GAME
INFO/RECALL
RH-SPLIT
CH
CH
VOL
VOL
POWER
MUTE
ASPECT
LIGHT
TV/VIDEO
[VOLUME-] Button
[RECALL]
Button
Button
Fig.2
Initial screen for service adjustment mode
The service adjustment mode has four modes, and only
the "Concurrent mode" can be opened. (Refer to Fig. 2.)
the "Concurrent mode" can be opened. (Refer to Fig. 2.)
(1) Concurrent mode> Select this mode for performing the
various adjustments.
Cancellation
Switch off the power or press POWER on the remote control.
Inter CAT 1999
Concurrent 97/98/99
I, Trace 94-96
Premium 94
eXtended 92-93/95
I, Trace 94-96
Premium 94
eXtended 92-93/95
hyper One 94
1. Concurrent Mode
Fig.3
Remote control
Adjustment method
... Use the remote control (refer to
Fig. 3)
Select "Concurrent mode" with the cursor keys [
] and
[
] of the remote control, and press the "ACTION" key to
display the adjustment screen.
(1)Button:
Selection of main items in forward direction
(2)Button:
Selection of main items in reverse direction
(3)Button:
Selection of sub-items in forward direction
(4)Button:
Selection of sub-items in reverse direction
(5)Button: One horizontal line at the time of hybrid
gamma adjustment
(6)Button: Single-color screen at the time of hybrid
gamma adjustment Only R, G, B, Cut-off
(8)Button: Built-in cross-hatch pattern
“ACTION” Button: switch main items and sub-items
*
(volume +, -) buttons: For adjustment
*
Press the NORMAL button for 3 seconds
1.Copy function: (Only hybrid gamma, G cut-off) -> Refer
1.Copy function: (Only hybrid gamma, G cut-off) -> Refer
to page 31.
2.Offset function: Only distortion correction -> Refer to
page 33.
To select Item
To select Item
To select the Data
ACTION
CBL
DBS
TV
DTV
AV-ADL
EXIT
SEARCH
SPLIT
VCR REC
GUIDE
MENU
NORMAL
GAME
INFO/RECALL
RH-SPLIT
CH
CH
VOL
VOL
(REW)
STOP
PLAY
(FF)
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