1. Explanation for PWB circuit
1-1. Power circuit
1. GR-P247, L247, C247, B247 / P207, L207, C207, B207
Power circuit consists of SMPS (SWITCHING MODE POWER SUPPLY) power. The SMPS consist of the rectifying part
(BD1, CE1) converting AC voltage to DC voltage, the switching part (IC2) switching the converted DC voltage, transformer
transferring energy of the primary side of the switching terminal to the secondary side and the feedback part (IC3, IC4)
transferring it to the primary side.
Caution : Since high voltage (DC310V) is maintained at the power terminal, please take a measure after more than 3
minutes have passed after removing power cords in the abnormal operation of a circuit.
Voltage of every part is as follows:
EXPLATION FOR MICOM CIRCUIT
- 34 -
Part
VA1
CE1
CE2
CE3
CE4
CE5
Voltage
230 Vac
310 Vdc
16 Vdc
12 Vdc
16 Vdc
5 Vdc
Summary of Contents for LRSC21934SW
Page 45: ...2 GR C247 B247 C207 B207 EXPLATION FOR MICOM CIRCUIT 45 ...
Page 54: ...2 GR C247 B247 C207 B207 EXPLATION FOR MICOM CIRCUIT 54 ...
Page 55: ...3 2 Parts list 1 GR P247 L247 P207 L207 EXPLATION FOR MICOM CIRCUIT 55 ...
Page 56: ...EXPLATION FOR MICOM CIRCUIT 56 ...
Page 57: ...2 GR C247 B247 C207 B207 EXPLATION FOR MICOM CIRCUIT 57 ...
Page 58: ...EXPLATION FOR MICOM CIRCUIT 58 ...
Page 59: ...3 3 DISPLAY ASSEMBLY part diagram 1 GR P247 L247 P207 L207 EXPLATION FOR MICOM CIRCUIT 59 ...
Page 60: ...2 GR C247 B247 C207 B207 EXPLATION FOR MICOM CIRCUIT 60 ...
Page 61: ...3 4 DISPLAY circuit diagram 1 GR P247 L247 P207 L207 61 Parts without mark means SMD parts ...
Page 62: ...2 GR C247 B247 C207 B207 62 Parts without mark means SMD parts ...
Page 64: ...EXPLATION FOR MICOM CIRCUIT 64 PCB ASSEMBLY DISPLAY PCB ASSEMBLY MAGIC DISPLAY ...
Page 65: ...2 GR C247 B247 C207 B207 EXPLATION FOR MICOM CIRCUIT 65 ...
Page 66: ...EXPLATION FOR MICOM CIRCUIT 66 PCB ASSEMBLY DISPLAY PCB ASSEMBLY MAGIC DISPLAY ...
Page 73: ...CIRCUIT 73 3854JD1103A ...
Page 74: ...CIRCUIT 74 3854JD1103A ...