Onkyo T-4555 - Radio Tuner User manual

T-4555
SERVICE MANUAL
SERVICE MANUAL
RC-671T
MULTI-PLATFORM TUNER
Black and Silver models
MODEL T-4555(B)/(S)
(North American model)
120V AC, 60Hz
120V AC, 60Hz
BMDC
SMDC
Ref. No. 4015
072007
SAFETY-RELATED COMPONENT
WARNING!!
COMPONENTS IDENTIFIED BY MARK ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.

SERVICE PROCEDURE
T-4555
V.1.02/06823A-3
Clear ---> STANDBY
!
!
1. Replacing the fuse
REF. NO.
F901
F901 or
PART NAME
FUSE
FUSE
DESCRIPTION
1.25A-UL/T-233
1.25A-T/UL-ST2
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.
PART NO. (SN)
252318GR
252251GR
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.
(4) Press the STANDBY/ON button to turn off the unit.
(5) Disconnect the AC power cord from a wall outlet.
version
3 seconds
FL display
REMARKS
P<MDD>
P<MDD>
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.
(4) Disconnect the AC power cord from a wall outlet.
FL display
4. Tuner board
North American model <MDC>
Comes with C-HDSAT tuner board installed.