Other Circuits; Dc Power Distribution - Ricoh FT5540 Service Manual

31 August 1989

15. OTHER CIRCUITS

15.1 DC POWER DISTRIBUTION

Power Supply Fuse Table
Voltage Fuse
24 Vf FU705 (5A)
24 Vp FU704 (5A)
*
5 Vb
24 Vm FU703 (5A)
FU702 (3.15A)
24 Va
*
5 Vc
100 Vac FU701 (5A)
* The outputs of Vb and Vc are protected by a built-in safety circuit that will cause the output
to open in the event of a short circuit. The output voltage is restored when the short circuit is
corrected.
Typical Symptoms
DF and Sorter inoperative
No display, blank copies
SC 2A
Sorter motor on constantly
Dead machine
2-108
Destination
Main board, ARDF/RDH
Operation panel, Power
packs
Main board, corona cleaner
motors, erase lamp unit
( L E D p o w e r )
Optics PCB (scanner, lens,
mirror drive motors)
Main board, clutches,
solenoids, counters,
relays, ac PCB, operation
PCB, paper feed PCB,
SSR PCB, paper bank PCB.
Logic circuits, ARDF/RDH.
100 Vac input