SONY PFM32C1
Instrukcja Serwisowa

Section 3 Troubleshooting
3-1. Judging Method When Image Does Not Appear
1. Flow chart

Picture does not appear
Check the indication on the indicator in the lower right of the front panel. (STAND BY)

STBY LED flashes

2 times

When error code is detected from panel.

3 times

When temperature increases.

4 times

When 5 V digital system power voltage decreases (2.5 V or less) or becomes excess voltage (6 V or more)

5 times

When 3.3 V digital system power voltage decreases (1.6 V or less) or becomes excess voltage (4 V or more)

6 times

When 6 V analog system power voltage decreases (3 V or less) or becomes excess voltage (7.2 V or more)

1

2

3

6

1

2

0.3 0.3 0.3 0.3 3

When the STBY LED does not flash, the power supply circuit is defective.

2. How to find PDP unit trouble 1) The power voltage for the PDP is supplied correctly. The power voltages are supplied from the switching regulator board CN6, CN23, CN33, CN42 and CN52 to the PDP panel. The four types of power voltage that are 3.3 V, 5 V, 55 V and 80 V are supplied.

2) The input signal is supplied to the PDP panel correctly. The LVDS signal is supplied to CN1 of the circuit board in the bottom of the PDP panel. (CN1 pin-1, pin-3, pin-5, pin-7, pin-9, pin-11, pin-13, pin-15, pin-17 and pin-19) If no images appears through the above conditions are satisfied, the PDP unit will be defective. 3-1

PFM-32C1/32C1E