How To Check The Pc Board - Toshiba RAS-10SA-E Service Manual

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9-4-1. How to Check the PC Board

(1) Operating precautions
1) When removing the front panel or the PC
board, be sure to shut off the power supply.
2) When removing the PC board, hold the edge
of the PC board and do not apply force to the
parts.
3) When connecting or disconnecting the connec-
tors on the PC board, hold the whole housing.
Do not pull at the lead wire.
(2) Inspection procedures
1) When a PC board is judged to be defective,
check for disconnection, burning, or discolora-
tion of the copper foil pattern or this PC board.
2) The PC board consists of the following 2 parts
a. Main PC board part:
Power relay, indoor fan motor drive circuit
and control circuit, C.P .U. and peripheral cir-
cuits, buzzer drive circuit and buzzer.
b. Infrared rays receive and indication
parts:
Infrared rays receive unit and LED.
– 44 –

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