3-84
Focus Servo is unstable
Replace the IC107.
•Check the R158.
•Replace the IC107.
• Check the connection of IC202 pin 146.
• Check the communication line between
IC106 and IC202.
• Replace the IC106.
• Check the connection of IC302.
• Replace the IC302.
Is FE signal
output normal in Focusing
Up/Down?
(IC107 pin 86)
Is FDRV signal
output normal in Focusing
Up/Down?
(IC202 pin 146)
Go to “Focus Actuator
operating is abnormal”
Focus Actuator operating is abnormal.
Is there focus
search control signal input?
(IC105 pin 53)
Is there focus
search drive voltage output?
(IC105 pin 45,46)
Is DRV-CTRL1
signal “H”?
(IC105 pin 23)
Replace the IC105.
•Check the connection CN101 pin 35,36.
•Check the connector CN101.
Replace the pick-up.
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Summary of Contents for RH4820W
Page 40: ...3 41 3 42 2 E5 BGA POWER UART2 CIRCUIT DIAGRAM E5 BAG POWER UART2 ...
Page 43: ...3 47 3 48 5 1394 ETHERNET CONNECTOR CIRCUIT DIAGRAM 1394 ETHERNET CONNECTOR ...
Page 44: ...3 49 3 50 VIDEO IN OUT 6 VIDEO IN OUT CIRCUIT DIAGRAM ...
Page 45: ...3 51 3 52 7 AUDIO IN OUT CIRCUIT DIAGRAM AUDIO IN OUT ...
Page 46: ...3 53 3 54 8 I O MICOM CIRCUIT DIAGRAM SR17208A I O MICOM ...
Page 47: ...3 55 3 56 9 TUNER VIDEO IN OUT CIRCUIT DIAGRAM SR17209A TUNER VIDEO IN OUT 3 9K 3 9K ...
Page 48: ...3 57 3 58 10 FRONT CIRCUIT DIAGRAM HDD VDR_FRONT ...
Page 54: ...3 69 3 70 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP SIDE LOCATION GUIDE ...
Page 55: ...3 71 3 72 2 MAIN P C BOARD BOTTOM SIDE LOCATION GUIDE ...
Page 57: ...3 75 3 76 5 FRONT P C BOARD LOCATION GUIDE 6 KEY P C BOARD ...
Page 58: ...3 77 3 78 7 POWER P C BOARD LOCATION GUIDE ...
Page 88: ...3 108 4 IC302 uPD76f0047 MICOM Pin Assignment ...
Page 110: ......
Page 112: ...3 132 3 133 2 DSP CIRCUIT DIAGRAM No Power No operation DSP IC RESET IC SDRAM R259 0Ω ...
Page 114: ...3 136 3 137 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE ...