Precautions On Component Replacement - Toshiba e-STUDIO477S Service Manual

3.1 Precautions on component replacement

(1) Remove the AC cable and the interface cable before replacing the parts.
(a) Remove the AC cable accableing to the following procedure.
① Switch the power switch of MFP off "O".
② Disconnect the AC insertion plug of the AC power cable from the AC power
source.
③ Disconnect the earth wire from the earth terminal of the AC power source
outlet.
④ Disconnect the AC cable and the interface cable with the MFP .
Warning
There is a risk of electric shock during replacement of the low voltage power
supply.Use insulating gloves or avoid direct contact with any conducting part of
the power supply, and caution should be exercised during replacement.
The capacitor may take one minute to complete discharge after the AC cable
is unplugged. Also, there is a possibility that the capacitor doesn't discharge
because of a breakage of the PCB, etc., so remember the possibility of electric
shock to avoid electric shock.
(b) Reconnect the MFP accableing to the following procedure.
① Connect the AC cable and the interface cable with the MFP .
② Connect the earth wire to the earth terminal of the AC power source outlet.
③ Connect the AC power cable insertion plug to the AC power source
④ Switch the power switch of MFP on "I".
Remove
45387101TH Rev.1
Risk of Electric Shock.
Install
(2) Do not disassemble it if the MFP works normally.
(3) Disassemble it as required. Do not remove the part that is not shown in
the replacement procedure.
(4) Please use the specified maintenance tool.
(5) Disassemble it accableing to the proper procedure. It may cause
damage to theparts if disassemble it without following the proper
procedure.
(6) As the small parts such as the screws are lost easily, please fix them to
the original position temporarily.
(7) Do not use gloves that may cause static electricity easily when handling
IC and the circuit board such as microprocessor, ROM, and RAM.
(8) Do not put the PCB on the device and the floor directly.
(9) Do not work for a long time with the MFP with the top cover open, and
an image drum unit installed in it.
3. Component replacement
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