Samsung S1000 - Cassette Deck Troubleshooting

6-2-1 Power Malfunction
6-2 Cassette Deck
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)
Replace µ-com
Yes
No

Main PCB POSNS
voltage normal ?
(pin 29 ; 4.5V)
Check the Main PCB :
DWA6
No
Main PCB RIC1(BA3950A)
OUT: pin 3(5V) output
voltage normal
No
No
No
Check the Main PCB
RZD5 : 30V
normal ?
Replace RZD5 30V
No
Replace FIC1(LC75710)
Yes
Replace µ-com
Yes
Fuse OK ?
No
Replace RIC1(BA3950A)
Yes
Replace Fuse
6-4 Samsung Electronics
Troubleshooting