Service manual
Table Of Contents
- 1. Introduction
- 2. The RA-3/3A Chassis
- 3. RA-3/3A Power Supply Troubleshooting
- 4. RA-3/3A Shutdown and Self-Diagnostics
- 5. RA-3/3A Deflection Circuits
- 6. RA-3/3A Video Process Troubleshooting: T & S Models
- 7. Troubleshooting the RA-4 Chassis
- 8. RA-4/4A Power Supply Troubleshooting
- 9. RA-4/4A Protect Circuit Troubleshooting
- 10. RA-4/4A Deflection Circuit Troubleshooting
- 11. RA-4/4A High Voltage Circuit Troubleshooting
- 12. RA-4 Video Troubleshooting
- 13. Troubleshooting the RA-4A Chassis
- 14. RA-4A Video Circuit Troubleshooting
- 15. Troubleshooting the RA-5A Chassis
- 16. RA-5A Power Supply Troubleshooting
- 17. RA-5A Protect Circuit Troubleshooting
- 18. RA-5A Deflection Circuit Troubleshooting
- 19. RA-5A High Voltage Circuit Troubleshooting
- 20. RA-5A Video Path Troubleshooting
- 21. Troubleshooting the RA-6 Chassis
- 22. RA-6 Power Supply Troubleshooting
- 23. RA-6 Protect Circuit Troubleshooting
- 24. RA-6 Deflection Circuit Troubleshooting
- 25. RA-6 High Voltage Circuit Troubleshooting
- 26. RA-6 Video Circuit Troubleshooting
- 27. Troubleshooting the AKB Circuits
- 28. Auto Registration Troubleshooting
- 29. Model-to-Chassis Cross Reference
8
3. RA-3/3A Power Supply Troubleshooting
C622
C624
R619
2
3
1
4
5
6
5
4 3 1
5
2
2
A BOARD
7
8
R654
C662
T604 PRT
D666
D603
C602
R610
R611
C620
IC601
MXO8
41AB-F
C612
N
2
1
RY601
12V
STBY
HOT
GND
R602
0.82
20W
Ω
C611
C612
P
12V STBY
Q651 BACK-UP
R668
D662
R617
C621
C623
2
IC654 DM-48
+135V
FROM IC001/62
CN1601
CN652
R677
R673
TO
PROT.
LATCH
Q652
RY
DRIVE
NQ658
LIMIT
N
R681
R680
R679
D665
C673
R676
P
Q653
SOFT
START
R669
R666
C670
R670
C671
D668
24V
R683
R621
R618
D665
C659
C658
D658
R655
C664
D660
D659
R656
R652
T605
PIT
AUDIO
GND
AUDIO
B+
AUDIO
B-
+5V
-5V
+15V
-15V
18V
FIGURE 3-2 - SWITCHING POWER SUPPLY
AC
50V/DIV 5uS T/DIV
1/2W
ΩR612 0.1
G BOARD
1TVP14 1448 7/17/02
IC652
IC653