Panasonic PT-56DLX25 Service Manual page 29

REMOVAL OF THE FRONT JACK C.B.A. (CIRCUIT BOARD FJ), THE CARD C.B.A., THE
REAR JACK C.B.A., THE POWER C.B.A. (CIRCUIT BOARD P), THE MAIN C.B.A.
(CIRCUIT BOARD DG) AND THE BASE C.B.A. (CIRCUIT BOARD A) FROM THE TV UNIT
1. CAUTION:
Be sure to make a note of the CURRENT LAMP value (value A) in Service Mode (1/4):
LAMP OPERATION TIME is stored in EEPROM on the Main C.B.A. Therefore, before removing the Main C.B.A. or the TV Unit at
the user's location, make a note of the CURRENT LAMP value (value A) in Service Mode (1/4).
Then, after installing the new Main C.B.A. or the TV Unit at the user's location, set the CURRENT LAMP value to the original value
(value A) in Service Mode.
Otherwise, OSD and LED Lamp replacement indications will be displayed at the wrong time.
Note:
In case it is impossible to make a note of the CURRENT LAMP value because of a defective Main C.B.A., ask the customer
their daily average use and the approximate age of the current Lamp. Then, calculate the CURRENT LAMP value as follows
and make a note.
2. Remove the TV Unit. Refer to Steps 1~3 in "REMOVAL OF THE TV UNIT FROM THE CABINET."
3. 1) Remove the Front Jack Earth Plate by removing Screw (402).
2) Disconnect Connectors P3901, P3902, P3903.
3) Remove the Front Jack C.B.A. by removing the 2 Screws (421).
4) Remove the Front Jack Holder with the Card C.B.A. by removing Screw (402) then releasing the 2 Locking Tabs.
5) Remove the Card C.B.A. by removing the 2 Screws (421).
Front Jack
Earth Plate
421
402
P3901
Card C.B.A.
421
Replacement Note for Card C.B.A.:
These parts will be necessary when replacing. Set aside, keep, and re-use.
- P9003 Connector Cable
Daily average use Approx. age
X
(hours) (days)
421
P3902
Front Jack C.B.A. (Circuit Board FJ)
P3903
402
Connector
P9003
Cable
421
Fig. D4-2
27
CURRENT LAMP
=
(hours)
Front Jack Holder
Locking Tabs
Clampers
PT-56DLX75 / PT-61DLX75