Yamaha 02r96 power supply repair manual
This is the 16 pages manual for yamaha 02r96 power supply repair manual.
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Extracted text from yamaha 02r96 power supply repair manual (Ocr-read)
Page 1
ANALYSIS-REPAIR FLOW CHART Confirm claim information F1: CERAMIC FUSE 50CT063H Replacement parts (Including preventive replacements) PKG1 RC1: RBV-1506 R2, 3, 4: A53K-220J 5W 22 ohm J Q1, 2: 2SK2915 R10,11: BPR58 5W 0.02 ohm K R3, 4, 5, 6: AK53K-220J 5W 22 ohm J R10, 11: BPR58 5W 0.02 ohm K Z1: L4981A PKG2 Q15, 16: 2SK2641-01 R64: RSMF2SL 0.22 ohm J R66, 69: RSMF12T 22 ohm 1/2W 22 ohm J R65, 68: RSMF12T 47 ohm J 1/2W 47 ohm J RX10: CR21TR680J R76: CR21TR101J R77: CR21TR101J R75: CR21TR331J Z2: SMA-Z1001A Q19, 20: 2SK2698 R84: RSMF2SL 0.22 ohm J R85, 88: RSMF12T 47 ohm J 1/2W 47 ohm J R86, 89: RSMF12T 22 ohm J 1/2W 22 ohm J RX13 CR21TR390J R96: CR21TR101J R97: CR21TR101J R95: CR21TR181J Z3: SMA-Z1001A Q22, 23: 2SK2641-01 R102: RSMF2SL 0.33 ohm J R104, 106: RSMF12T 10 ohm J 1/2W 10 ohm J R109: CR21TR152J RX14: CR21TR821J PKG3 Z4: SMA-Z1001A PKG3 R108: CR21TR471J F1 Open RC1: Rectifier R2, 3, 4, 5: Anti-collision resistor Q1, Q2: Main FET R10, 11: Gate resistor Q15, 16: Main FET R64: Protection resistor R66, 69: Gate resistor Q19, 20: Main FET R84: Protection resistor R86, 89: Gate resistor Q22, 23: Main FET R102: Protection resistor R104, 106: Gate resistor Z5: Control IC 1-4pin, 12-14pin R119: Protection resistor R119: RSFM2SL 0.68 ohm J R133: CR21TR222J RX16: CR21TR271J PKG3 Z5: SMA-Z1001A PKG3 R132: CR21TR331JNO YES 2 1 Input filter section PFC circuit +5V system circuit +12V system circuit +5V, +/-15V system circuit +48V, +20V system circuit No abnormality 1 2
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AC power supply input Confirm outputImplement unable-to-recreate test items Confirm the start-up condition of each output voltage using OSC. (Overvoltage protective operation, yes/no) Completely no output Check PFC circuit operation Investigate PFC circuit Stop after momentary oscillationFET Vds H levelIntermittent oscillation Confirm main operation waveform (refer to page 4)Detection of circuits not outputting Abnormal wave form Secondary side output circuit investigation Inspect whether or not there is output terminal shorting of the secondary side output circuit Operation of protective circuit, mis-operationControl IC Vcc voltage level YESNG YES +/-15A,+/-5A +48, +20, +12A +12DT V 0V +5D, +5LED No output of 1 systemRated voltage Overvoltage detection 1 3 4 5 +/-15A,+/-5A Q23 D-S+48, +20, +12A Z5 14-12+12D Q20 D-S+5D, +5LED Q16 D-S C15: Output terminal voltage (380V) Overvoltage operation ALM Z1 Vcc voltage level L 3