CONTROL BOARD
P/N: EBR71200701
X1
25 MHz
IC702
MCM
IC101
IC701
IC22
Serial
Flash
D1
IC703
L1
P105
P107 P108
P22 n/c
Auto Gen
VS_DA
P2
P106
IC53
IC11
3.3V from IC53
Pins 41~43
n/c Upgrades
3.3V from IC53
Pins 8~10
4.94V
1.05V
1.06V
1.05V
3.3V 1.8V
1.8V On
3.31V
3.27V
42PW350 Control Board Layout Drawing
113
June 2011 42PW350 Plasma
TESTING THE CONTROL BOARD:
Disconnect all connectors.
Jump STBY 5V from SMPS P813 Pin 13 to pin 3 (top leg) of IC701
Apply AC and turn on the Set. Observe Control board LED D1,
if it’s blinking, most likely Control board is OK.
NO VIDEO or ABNORMAL VIDEO:
* If the complaint is no video running the Panel Test causes video to
appear or appear normal, suspect the Main board or LVDS cable.
Note: LVDS Cable must be removed for Auto Gen to work.
3.3V and X-Drive
Right RGB Signals
Ribbon Cable
Y-SUS and Y Drive Signals
To Y-SUS
With the unit on, if D1 is not on, check 5V supply. Note: In this set M5V is routed from the SMPS (P811 pin 6)
to the Z-SUS (P205), from the Z-SUS to the Y-SUS, from the Y-SUS to the Control board, from Control to Z-
SUS, Pins 4~7 of P101. If present replace the Control Board. If missing, see (To Test Control Board)
LVDS Video
from Main
Z-Drive Creation Signals
M5V and 18V to Z-SUS
PANEL TEST:
Disconnect P106 and
Remove LVDS Cable. Short across
Auto Gen TPs to generate a test
pattern when A/C power is applied.
IC53 Diode Check Pin 2 (3.3V)
All Connectors Connected
0.52V Red Lead
0.31V Blk Lead
All Connectors Removed
0.66V Red Lead
0.36V Blk Lead
18V generated by D506 on Y-SUS
1~3 (18V)
4-7 (M5V)
IC701 (1.8V Regulator)
(1) Gnd
(2) 1.8V
(3) 3.31V
3.3V and X-Drive
Left RGB Signals
IC53 (3.3V Regulator)
(1) 4.94V
(2) 3.32V
(3) Gnd
28~30 (18V)
24-27 (M5V)
IC11
(1) Gnd
(2) 0V
(3) 3.31V
X1
Top: 1.6V
Bottom: 1.7V
IC22
(1) 3.25V
(2) 0V
(3) 3.27V
(4) 0V
(5) 3.28V
(6) 0V
(7) 3.27V
(8) 3.31V
1
2
3
2
1
2
3
2
12
3
(1) 4.94V
(2) 0V
(3) Gnd
(4) Gnd
(5) Gnd
(6) 0.83V
(7) 0.61V
(8) 0.52V
( 9) 1.92V
(10) 1.06V
(11) 1.06V
(12) 1.06V
(13) 6.1V
(14) 4.96V
(15) 3.31V
(16) 5V
IC703 (1.0V Core Regulator)
DDR
Memory
3D-Sync
Pin 50
3.48V p/p 60 Hz
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