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Sony RB1G Service Manual
Also see for RB1G: Service manual
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RB1G CHASSISW600A/ W603A/ W605A/ W607A/ W650A/ W651A/ W653A/W654A/ W655A/ W656A/W657A/ W658A/ W670A/ W674A330Troubleshooting3-3-4. Main Board Power On Checking (for Main SP Lch & Rch)No Checking Item OK NG If NG If NG1 CheckIC4601 side-terminal ofL4601,L4602,L4603,L4604Switching Freq = 384kHz or 768KHz±20KHzVrms = dont careNo switchingfrequency at eitherone of the CLGo to next checking.2 Check F4601 MainSP(for BA2 and BM board only)V(before fuse) = 12.5V ± 0.5VV(after fuse) = 12.5V ± 0.5 VNo voltage. Check fuse broken?Check CN9101 Pin 8 &10got 12.5V?Change fuse (5A).Check power supply boardaudio VCC.3 Check F4601 MainSP(for BKE, BKX , BKJ BLE,BLX and BLJ board only)V(before fuse) = 19.5V ± 0.5VV(after fuse) = 19.5V ± 0.5 VNo voltage. Change fuse (5A).Check power supply boardaudio VCC.4 Check IC4601 (Pin 8) andC4601 (Pin 27)(for BKE, BKX , BKJ BLE,BLX and BLJ board only)V(before fuse) = 3.3V ± 0.5VV(after fuse) = 3.3V ± 0.5 VNo voltage. Check +3.3V_MAINsupply.Size B* Board Type(Segment: LW)OTHERS EUROPE JP24” BLX BLE BLJ32” BKX/BLX BKE/BLE BKJ/BLJ42” BKX/BLX BKE/BLE BKJ/BLJ50” BLX BLE - |
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