31
TROUBLE SHOOTING
No raster.
Vertical deflection
Horizontal
deflection
Check D drive signal in Q422 base
Check H drive signal input in Q430 base
Check H driver B+ voltage in T802 #5
Check IIC bus communication between main assy
and ICM2
Check ICM2 #40 (H-drive output)
5Vp-p
0.7Vp-p
12Vp-p
2Vp-p
6Vp-p
DC
115V
31.5KHz
31.5KHz
31.5KHz
NO
NO
Check
R449
Check Q422
NO
Check main
assy, ICM2
Summary of Contents for DSJ-4720CRU
Page 14: ...13 IC Description...
Page 15: ...14 IC Description...
Page 16: ...15 IC Description...
Page 17: ...16 IC Description...
Page 19: ...18 IC Description 5 2 Pin Circuits VSP94X5B VSP94X7B...
Page 20: ...19 IC Description 5 3 Application Circuit 5 3 1 Application Example for QFP80 package...
Page 21: ...20 IC Description 5 4 Pin Description CXA2150AQ...
Page 22: ...21 IC Description...
Page 23: ...22 IC Description...
Page 24: ...23 IC Description...
Page 25: ...24 IC Description...
Page 26: ...25 IC Description...
Page 27: ...26 IC Description...
Page 28: ...27 IC Description...
Page 29: ...28 IC Description...
Page 30: ...29 IC Description...
Page 52: ...51 8 Schematic Diagram 1 Block Diagram...
Page 53: ...52 Schematic Diagram 2 Power...
Page 54: ...53 Schematic Diagram 3 Convergence AMP...
Page 55: ...54 Schematic Diagram 4 Convergence Module...
Page 56: ...55 5 CRT Amp Schematic Diagram...
Page 57: ...56 6 IF Module Schematic Diagram...
Page 58: ...57 7 AV Main Schematic Diagram...
Page 59: ...58 8 Micom Module Schematic Diagram...
Page 60: ...59 9 Control Union Schematic Diagram...
Page 61: ...60 1 Main PCB 9 PRINTED CIRCUIT BOARD...
Page 62: ...61 2 Power PCB PRINTED CIRCUIT BOARD...
Page 63: ...62 3 Convergence Module PCB PRINTED CIRCUIT BOARD...
Page 64: ...63 4 IF Module PCB PRINTED CIRCUIT BOARD...
Page 65: ...64 5 CRT PCB PRINTED CIRCUIT BOARD...
Page 66: ...65 6 UNION PCB PRINTED CIRCUIT BOARD...
Page 67: ...66 1 DSJ 4710CRU 10 EXPLODED VIEW...
Page 68: ...67 2 DSJ 4720CRU EXPLODED VIEW...
Page 69: ......