Panasonic LCD-201411 / AVC-201411 / AX900 Service Manual / Other ▷ View online
7. Other Information
53
New heat dissipation specifications (PCS) for A-Board
AX900/AX850/X940
< Applicable Model : AX900, AX850, X940 (Peaks Pro5 model) >
Peaks Pro5 IC use a new type of heatsink sheet (
PCS
: Phase Change Sheet,
20mm x20mm x 0.41mm
).
This sheet
can not be used again
after removal. If we remove the heatsink (heat dissipation plate)
from Peaks Pro5 IC, a new sheet must be applied.
#Spare parts for A board including heat dissipation plate.
PCS
(backside)
(backside)
Rear side of A board
Heat dissipation plate
b
Caution:
Don’t keep power on without
heat dissipation plate and
foundation heatsink.
The Peaks Pro5 will be damaged.
Don’t keep power on without
heat dissipation plate and
foundation heatsink.
The Peaks Pro5 will be damaged.
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a
c
PCB
基板取り付け土台（ヒートシンク）
PCS
Peaks Pro5
Heat transfer rubber
Other IC
Other IC
Heat transfer rubber
Heat dissipation plate
Heat transfer rubber
LCD Panel
HEATSINK
FOUNDATION HEATSINK
a
b
c
Heat dissipation plate
Notes on P PCB during exchange (85AX900)
The power supply of 85 inch model is configured P board and PB board.
If P or PB board is replaced, discharging the capacitor of PB board is required.
If P or PB board is replaced, discharging the capacitor of PB board is required.
P board may be broken without discharging.
AX850/X940
< Applicable Model : 85AX850, 85X940 (85 inch model) >
PB Board
P Board
Discharge point A
(insert the lead of resister
to touching the solder
of back side)
of back side)
Discharge point B
(=touching to the
lead of capacitor)
lead of capacitor)
< Discharge method of P/PB board >
1. Don’t disconnect the cable except AC plug.
Discharge with the recommended resistance
to the discharge point A or B (printed on the PB board).
to the discharge point A or B (printed on the PB board).
2. After discharging (about 15 seconds), measure the voltage
at discharge point B. After confirming less than 15V, replace
the P/PB board.
(#The maximum voltage of discharge point is 390V)
the P/PB board.
(#The maximum voltage of discharge point is 390V)
*If replacing only panel module, unnecessary discharging.
Recommended resistance: ERG5SJ102 (5W, 1kΩ)
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Revision History
Version
Issued/Revised
date
date
Revised content
Ver. 1.0
19th.Nov.2014
First version
56
