Panasonic PT-43LCX64 Service Manual page 51

REMOVAL OF THE TUNER C.B.A., THE DTV TUNER UNIT, THE MAIN C.B.A., THE
DIGITAL TUNER POWER C.B.A., THE REAR JACK C.B.A., THE AUDIO AMP C.B.A., THE
POWER C.B.A. FROM THE TV/TUNER UNIT
CAUTION:
1. Be sure to make a note of the CURRENT LAMP value (value A) in Service Mode (1/3):
LAMP OPERATION TIME is stored in EEPROM on the Main C.B.A. Therefore, before removing the Main C.B.A. or the TV/Tuner
Unit at the user's location, make a note of the CURRENT LAMP value (value A) in Service Mode (1/3).
Then, after installing the new Main C.B.A. or the TV/Tuner 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.
1. Remove the TV/Tuner Unit and the Ballast C.B.A. Refer to Steps 1~7 in "REMOVAL OF THE BALLAST C.B.A. AND THE TV/
TUNER UNIT FROM THE CABINET."
2. 1) Disconnect Connectors P6003, P5601, P7002, P7008, P3604, P3503, Tuner terminal and release from the clampers.
2) Remove the Tuner C.B.A. by removing the 3 Screws (402).
3) Remove the Fan5 by removing the 2 Screws (435).
Tuner C.B.A.
P7002
402
P7008
P7007
Daily average use
X
(hours)
402
Approx. age CURRENT LAMP
=
(days) (hours)
435
Air Flow
P6003
P5601
Clampers
Fig. D3-1-1
435
Fan 5
Name
Plate
Tuner
terminal
P3604
P3503