Read LG MT-42PM13B (CHASSIS:RF-04GC) Service Manual online
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4-3. HDCP Download Method
(1) Input power of Stand-By 5V.
(Download must be executed only when it is on Stand-by)
(2) The RS-232C(9PIN) must be connected to the COM1 on
the PC.
(3) If all the preparation is completed, click on ‘Download’.
(4) If abnormal state (Fig. 10) display then (3) execute.
5. POWER PCB Assy Voltage
Adjustments
(Va, Vs Voltage Adjustments)
5-1. Test Equipment :
D.M.M. 1EA
5-2. Connection Diagram for Measuring
: Refer to (Fig.11).
5-2. Adjustment method
(P/No 3501V00180A B/D)
(1) Va Adjustment
1) After receiving 100% Full White Pattern, HEAT RUN.
2) Connect + terminal of D.M.M to Va pin of P805, connect
2) Connect + terminal of D.M.M to Va pin of P805, connect
- terminal to GND pin of P805.
3) After turning RV501, voltage of D.M.M adjustment as
same as Va voltage which on lable of panel right/top
(Deviation; ±0.5V)
(Deviation; ±0.5V)
(2) Vs Adjustment
1) Connect + terminal of D.M.M to Vs pin of P805, connect
– terminal to GND pin of P805.
2) After turning RV401, voltage of D.M.M adjustment as
same as Va voltage which on label of panel right/top.
(Deviation; ±0.5V)
(Deviation; ±0.5V)
(Fig. 8)
(Fig. 9) Normal State
Each PCB assembly must be checked by check JIG set.
(Because power PCB Assembly damages to PDP Module,
especially be careful)
(Because power PCB Assembly damages to PDP Module,
especially be careful)
(Fig. 10) Abnormal State
Va ADJ
RV601
P806
P805
P807
Va
GND
NC
VS
VS
DMM
+
-
P804
P801
P802
Vs ADJ
RV401
RV401
P803
<3501V00180A>
Va ADJ
RV501
P806
P805
P807
Va
GND
NC
VS
VS
DMM
+
-
P804
P801
P802
Vs ADJ
RV401
P803
<3501V00182A>
(Fig. 11) connection diagram of power adjustment for measuring.
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