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4. POWER PCB Assy Voltage
Adjustments
(Va, Vs, 5V Vcc Voltage Adjustments)
4-1. Test Equipment :
D.M.M. 1EA
4-2. Diagram for Measuring
Refer to (Fig 8).
4-3. Adjustment Method
(1) Va Adjustment
1) C terminal of D.M.M to Va pin of P805, connect
- terminal to GND pin of P805.
2) Turn RV501, to adjust the Va voltage to match the value
marked on the label on the right/top of the panel.
(Deviation; ±0.5V)
(2) Vs Adjustment
1) C terminal of D.M.M to Vs pin of P805, connect
– terminal to GND pin of P805.
2) Turn RV401, to adjust the Vs voltage to match the value
marked on the label on the right/top of the panel.
(Deviation; ±0.5V)
(3) 5V Voltage Adjustment
1) C terminal of D.M.M to 5V Vcc pin of P804,
connect – terminal of D.M.M to GND pin of P804 on the
left PSU.
Turn RV601, to adjust the voltage value of D.M.M to be
5.3V. (Deviation; ±0.05V)
2) C terminal of D.M.M to 5V Vcc pin of P804,
connect – terminal of D.M.M to GND pin of P804 on the
right PSU.
Turn RV601, to adjust the voltage value of D.M.M to be
5.3V. (Deviation; ±0.05V)
3) C terminal of D.M.M to 5V Vcc pin of P804,
connect – terminal of D.M.M to GND pin of P804 on the
left PSU.
Turn RV601, to adjust the voltage value of D.M.M to be
5.6V. (Deviation; ±0.05V)
4) C terminal of D.M.M to 5V Vcc pin of P804,
connect – terminal of D.M.M to GND pin of P804 on the
right PSU.
Turn RV601, to adjust the voltage value of D.M.M to be
5.6V. (Deviation; ±0.05V)
* Caution 1) Because there are two units in PSU, one of
them fixes to 5.3V voltage and then the other
adjusts to 5.3V voltage. After adjusting 5.3V
voltage with each other, one of them and the
other adjust to 5.6V voltage accordingly.
* Caution 2) Make small adjustments. Great differences
can cause the unit to shutdown.
5. DDC Data Input
5-1. Required Test Equipment
(1) A jig for adjusting PC, DDC (PC serial to D-sub
Connection equipment)
(2) S/W for writing DDC (EDID Data Write & Read)
(3) D-sub 15P Cable, DVI Cable, DVI to HDMI Connector
(HDMI EDID Down load)
5-2. Setting of Device
ADJUSTMENT INSTRUCTIONS
Each PCB assembly must be checked by Check JIG Set
before assembly. (Take special note of the Power PCB, which
can easily damage the PDP module)
(Fig. 8) Connection Diagram for measuring Power Adjustments
(Fig. 9)
