Toshiba 35WP26P PLASMA Service Manual

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1. Power failure
(1) POWER is turned OFF. Turn on the main power switch.

NO Is the POWER LED lit? Is the power plug connected to the wall outlet correctly? YES

NO Poor power plug connection

YES

NO
· To "Flashing in red" (2) (P1-3). (Temperature error detection) · To "Flashing in blue and red" (3) (P1-4) (Panel crack detection) · To "Flashing in blue" (4) (P1-5). (FAN error detection) Is 110-240V AC available behind the fuses F1 and F2? Fuses F1 and F2 have blown out. If the fuses are replaced and they blow out again, the POWER unit is out of order.

YES

NO Is the M+7V output available at Pin 1 of the PM connector? If the PW and RS connectors are disconnected from one after another and an output of M+7V is generated, this is a problem in a circuit beyond the connectora. If no output is generated at that time, then the POWER unit is out of order. NO Is the M+5V output available at Pin 3 (MAIN) of IC9503? S2601 (PWR) and associated circuits are out of order.

YES

From (3): Flashing in blue and red (Panel crack detection) (P1-4)

YES NO Is the M+5V output available at Pin 5 of the LD connector, Pin 4 of the PW connector.
YES IC9501 and peripheral circuits are out of order.

The +5V line is out of order toward the LED PWB, PWR, PWB.

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(Caution) When the LED is flashing (protector in operation), all power lines other than M+7 are automatically turned off. When checking the power lines other than the M+7V system, a circuit tester or the like should be connected to the measuring point in advance, for confirmation.

(2) Flashing in red (Temperature error detection) NO In the cold-start mode, does it take less than 15 seconds after the main power circuit is turned ON and until it is turned OFF? YES Is Potential 0V maintained at Pin 29 (MAIN) of IC9501? NO IC9501 and peripheral circuits are out of order.

YES TH1 in the POWER unit and peripheral circuits are out of order. NO The POWER unit is out of order.

Disconnect the PD, PH, and AD connectors and turn ON the main power circuit. Does the power supply work normally in this state? (Are normal outputs of D+170V, D+60V, and D+5V available? Is Pin of the PM connector maintained at the [H] level? However, no pictures are displayed.)

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YES The MODULE and peripheral circuits are out of order.

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(3) Flashing in green and red (Panel crack detection)

NO Is Potential 0V maintained at Pin 100 (MAIN) of IC9501? YES NO Is Potential 0V maintained at Pin (MAIN) of IC9506? YES Disconnect the PD, PH, and AD2 connectors and turn ON the main power circuit. Does the power supply work normally NO in this state? (Are normal outputs of D+170V, D+60V, and D+5V available? Is Pin 3 of the PM connector maintained at the [H] level? However, no pictures are displayed.) YES The MODULE and peripheral circuits are out of order. YES Is Potential 5V applied to Pin of IC9506? NO Skip to " (1) Power is turned OFF." (P1-2). IC9501 and peripheral circuits are out of order.

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IC9506 and peripheral circuits are out of order.

The POWER unit is out of order.

(Caution) How to cancel the alarm condition: · While flashing in green and red occurs, the power supply cannot be reset by ON/OFF operation at the main power switch, remote control, and wall outlet. · For alarm resetting, keep pressing the input selector key at the main unit of the set and move the mains power switch to [ON] at the main unit. In this state, it is necessary to keep pressing the input selector key of the main unit for more than 2 seconds.

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