Service Procedure - Onkyo T-4555 Service Manual

SERVICE PROCEDURE

1. Replacing the fuse
This symbol located near the fuse indicates that the
fuse used is show operating type, For continued protection against
fire hazard, replace with same type fuse , For fuse rating, refer to
the marking adjacent to the symbol.
Ce symbole indique que le fusible utilise est e lent.
Pour une protection permanente, n'utiliser que des fusibles de meme
type. Ce demier est indique la qu le present symbol est apposre.
REF. NO. PART NAME
F901 FUSE
F901 or FUSE
2. Initialize the unit
(1) Connect the AC power cord into a wall outlet.
(2) Press the STANDBY/ON button to turn on the unit.
(3) Press and hold down the MEMORY button, then press the STANDBY/ON button.
FL display
(4) Disconnect the AC power cord from a wall outlet.
3. Check the version of microprocessor
(1) Connect the AC power cord into a wall outlet.
(2) Press the STANDBY/ON button to turn on the unit.
(3) Press and hold down the DISPLAY button, then press the STANDBY/ON button.
FL display
V.1.02/06823A-3
(4) Press the STANDBY/ON button to turn off the unit.
(5) Disconnect the AC power cord from a wall outlet.
4. Tuner board
North American model <MDC>
Comes with C-HDSAT tuner board installed.
DESCRIPTION
1.25A-UL/T-233
1.25A-T/UL-ST2
Clear ---> STANDBY
version
3 seconds
PART NO. (SN) REMARKS
252318GR P<MDD>
!
252251GR ! P<MDD>
T-4555