Samsung S1000 Service Manual page 20

Troubleshooting
6-2 Cassette Deck
6-2-1 Power Malfunction
Main PCB µ-com VDD(5V)
normal?
UIC1 pins 18,47,90
Yes
Main PCB
Does UX2(12MHz)
oscillate ?
Yes
Check the FIC1(LC75710) :
pin 54 Vp(30V)
Yes
Replace µ-com
6-4
No
Main PCB RIC1(BA3950A)
OUT: pin 3(5V) output
voltage normal
Yes
Replace µ-com
No
Main PCB POSNS
voltage normal ?
(pin 29 ; 4.5V)
No
Check the Main PCB
RZD5 : 30V
normal ?
Yes
Replace FIC1(LC75710)
No
Fuse OK ?
Yes
Replace RIC1(BA3950A)
No
Check the Main PCB :
DWA6
No
Replace RZD5 30V
No
Replace Fuse
Samsung Electronics