Samsung Electronics
6-1
6. Troubleshooting
6-1 Amplifier
6-1-1 Power Malfunction
Front PCB
µ
-com VDD(5V)
normal?
UIC1 pin no. 18,47,90
Replace RIC1
Main PCB RIC1(BA3950) IN: 23V
Input voltage normal?
Yes
Check the Power PCB;
RD7,8,13(1N5392)
Yes
Front PCB
Does UX1(12MHz)
oscillate ?
FRONT PCB PWR-SENS
voltage normal ?
(pin no. 27 ; 5V)
Check the Main PCB
RD16,RR10,11,12,RC12
RD9
Yes
Front PCB
When the power is
ON 'H' displays
at pin no. 5 ?(5V)
Yes
Connect Front PCB and Main PCB.
Check the connector Main PCB.
Wafer MCW2
No
Replace
µ
-com.
Yes
No
No
No
No
Check the Power PCB : P/T, FUSE
No
Summary of Contents for MAX-460V
Page 46: ...9 2 CD Samsung Electronics 9 2 Block Diagrams ...
Page 47: ...9 3 Video CD 9 3 Samsung Electronics Block Diagrams ...
Page 60: ...10 PCB Diagrams 10 1 Main 10 1 Samsung Electronics ...
Page 61: ...Samsung Electronics 10 2 PCB Diagrams ...
Page 62: ...10 3 Samsung Electronics PCB Diagrams 10 2 Front ...
Page 63: ...Samsung Electronics 10 4 PCB Diagrams 10 3 Power ...
Page 64: ...10 5 Samsung Electronics 10 4 CD 10 4 1 Top View 10 4 2 Bottom View PCB Diagrams ...
Page 65: ...Samsung Electronics 10 6 10 4 3 CD SUB PCB Diagrams ...
Page 66: ...10 7 Samsung Electronics 10 5 Video CD 10 5 1 Top View 10 5 2 Bottom View PCB Diagrams ...
Page 67: ...10 5 Samsung Electronics 10 4 CD 10 4 1 Top View 10 4 2 Bottom View PCB Diagrams ...
Page 69: ...Samsung Electronics 12 2 12 2 Front Schematic Diagrams ...
Page 70: ...12 3 CD Schematic Diagrams 12 3 Samsung Electronics 1 1 2 2 ...