NEC PlasmaSync PX-42VM1G, Service Manual

Page: 81 / 172

5-3
METHOD OF ADJUSTMENTS
PWB name Terminal No. Signal name Standard voltage value
MAIN PM
1
M+14V 14V
±
5%
PWC-4418 PM
3
M+7V 7V
±
5%
PN
7 8
D+5V 5V
±
5%
PN
1 2
A+14V 14V
±
5%
PN
5 6
A+7V 6.5V~9.0V
IC9504
3
VDDM5 5V
±
5%
IC9705
3
F+12 12V
±
5%
IC6504
1
VDDP 3.3V
±
0.16V
IC9801
3
VDD3 3.3V
±
0.16V
IC9809
3
VDD3AD 3.3V
±
3.0%
IC9703
3
VDD3B~D 3.3V
±
0.16V
IC9803
3
VDD3E 3.3V
±
0.16V
IC9808
3
VDD3S 3.3V
±
3.0%
IC9804
3
VCC+5 5V
±
5%
IC9802
3
VCC+12 12V
±
5%
VIDEO PV
1
A+14V 14V
±
5%
PWC-4417 PV
3
A+7V 6.5~9.0V
PQ
1
M+14V 14V
±
5%
PQ
3
M+7V 7V
±
5%
IC5816
3
SYNC+5V 5V
±
2.5%
IC5817
3
SYNC+12V 12V
±
3.0%
IC5207
3
A+3.3V 3.3V
±
0.16V
IC5208
3
A+5V 5V
±
3.0%
IC1012
3
A4+9V 9V
±
3.0%
IC5201
3
A1+9V 9V
±
3.0%
IC5202
3
A2+9V 9V
±
3.0%
IC5601
3
A3+9V 9V
±
3.0%
IC5402
3
A+12V 12V
±
3.0%
SUB PQ
1
M+14V 14V
±
5%
PWC-4419 PQ
4
A+7V 6.5~9.0V
IC1008
4
AMP+5V 5
±
0.15V
IC1009
3
RGB+5V 5
±
0.12V
<PWB Adjustments>
1. Setting and confirmation before adjustment
(1) For the adjustment and inspection of the MAIN PWB (PWC-4418) unit, TP9701 and TP9702 should be
short-circuited.
* By this treatment, the action for [6-8. Fan stop detection] is made invalid (disregarded).
If a DC fan or a dummy is used, this short-circuit action is not required.
(2) For the adjustment and inspection of the VIDEO PWB (PWC-4417), or for the adjustment and inspection
using this PWB, the DS connector (73B4V002) to be used for the set Assy should be connected to the DC
connector of the VIDEO PWB (PWC-4417). (If this connection is not made, no signals are generated for the
VIDEO system.)
(3) Confirm that each terminal voltage specified below is kept within the standard range.