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Aiwa HV-FX5100 service manual Troubleshooting Guide, E-19

Models: HV-FX5100

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E-19

TROUBLESHOOTING GUIDE

AUDIO CAN NOT BE

RECORDED

Is BIAS level O.K	No
at L4005 ?
Yes

Is there AUDIO signal	No
at pin 5 of CP4002 ?
Yes
Is there AUDIO signal	No
at pin 11 of IC4001 ?
Yes

Check the lead wire and connector to A/C HEAD.

Is the voltage at pin 2 of L4005 5.8V ?

Yes

Is the voltage at pin 29 of IC1002 about 5V ?

Yes

L4005 is broken or shorted.

No

Check POWER circuit.

No

Replace IC1002.

Check the circuit between pin4 of IC4001 to pin 5 of CP4002.

Replace IC4001.

E-19

Image 42

Aiwa HV-FX5100 service manual Troubleshooting Guide, E-19

Contents

BASIC TAPE MECHANISM OVD-6 S/M Code No. 09-996-332-2N1VIDEO CASSETTE RECORDER SPECIFICATIONSTABLE OF CONTENTS 4.PERFORM A SAFETY CHECK AFTER SERVICING SERVICING NOTICES ON CHECKINGIMPORTANT NOTICE 1.KEEP THE NOTICES1-2 FLAP Refer to Fig DISASSEMBLY INSTRUCTIONS1.REMOVAL OF MECHANICAL PARTS AND P.C. BOARDS 1-3 DECK CHASSIS Refer to Fig2-1 TOP BRACKET Refer to Fig 2. REMOVAL OF DECK PARTSDISASSEMBLY INSTRUCTIONS 2-3 TAPE GUIDE L Refer to Fig. 2-3-A2-9 TENSION ASSY Refer to Fig. 2-9-A DISASSEMBLY INSTRUCTIONS2-6 LINK ASSY Refer to Fig 2-7 LOADING MOTOR ASSY Refer to Fig2-11 S REEL/T REEL ASSY Refer to Fig DISASSEMBLY INSTRUCTIONSRefer to MECHANICAL ADJUSTMENT 2-13 A/C HEAD Refer to Fig. 2-13-A2-16 CAPSTAN DD UNIT Refer to Fig DISASSEMBLY INSTRUCTIONS2-15 AHC ASSY/CYLINDER UNIT ASSY Refer to Fig 2-17 MIDDLE GEAR/MAIN CAM Refer to Fig. 2-17-A2-20 INCLINED S/T ASSY Refer to Fig DISASSEMBLY INSTRUCTIONS2-19 LOADING GEAR S/T ASSY Refer to Fig. 2-19-A B2-5AFT DET KEY TO ABBREVIATIONSH.SW A.PBSYNC SEP KEY TO ABBREVIATIONSSYNC TRACOperations SERVICE MODE LISTMethod C2-1PREVENTIVE CHECKS AND SERVICE INTERVALS CONFIRMATION OF USING HOURSC3-1 1. AUDIO CONTROL HEAD CLEANINGPREVENTIVE CHECKS AND SERVICE INTERVALS 2. TAPE RUNNING SYSTEMNOTE FOR THE REPLACING OF MEMORY IC C4-1How to use the Servicing Fixture SERVICING FIXTURES AND TOOLSPREPARATION FOR SERVICING RemarksVCR TEST TAPE INTERCHANGEABILITY TABLE C6-1MECHANICAL ADJUSTMENTS 1. CONFIRMATION AND ADJUSTMENTD1-1 1-4 CONFIRMATION OF VSR TORQUE MECHANICAL ADJUSTMENTSRefer to the ELECTRICAL ADJUSTMENTS 1-5 CONFIRMATION OF REEL BRAKE TORQUERefer to SERVICING FIXTURE AND TOOLS MECHANICAL ADJUSTMENTS2-3 TAPE RUNNING ADJUSTMENT X VALUE ADJUSTMENT Refer to item3. MECHANISM ADJUSTMENT PARTS LOCATION GUIDE MECHANICAL ADJUSTMENTSD1-4 1-1 PG SHIFTER CONDITIONS ELECTRICAL ADJUSTMENTS1. BASIC ADJUSTMENT INSTRUCTIONSELECTRICAL ADJUSTMENTS 2. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDESYSCON PCB D2-2TROUBLESHOOTING GUIDE TROUBLESHOOTING GUIDE TROUBLESHOOTING GUIDE Is input level at pin 85 of IC1002 about 0.4Vp-p? TROUBLESHOOTING GUIDEAUDIO SHAKES Is AUDIO HEAD scratched ? No Yes Check AUDIO BLOCKTROUBLESHOOTING GUIDE TROUBLESHOOTING GUIDE FF/REW DO NOT WORK TROUBLESHOOTING GUIDECheck pins 9 and 10 of IC1002 lines ing atTROUBLESHOOTING GUIDE TROUBLESHOOTING GUIDE TROUBLESHOOTING GUIDE E-10TROUBLESHOOTING GUIDE E-11TROUBLESHOOTING GUIDE E-12TROUBLESHOOTING GUIDE E-13NO COLOR DURING PLAYBACK TROUBLESHOOTING GUIDEDoes COMPOSITEsignal appear at pin 52 of IC4001? Yes Check Q4802 circuitTROUBLESHOOTING GUIDE E-15TROUBLESHOOTING GUIDE E-16TROUBLESHOOTING GUIDE E-17TROUBLESHOOTING GUIDE E-18TROUBLESHOOTING GUIDE E-19TROUBLESHOOTING GUIDE E-20TROUBLESHOOTING GUIDE E-21TROUBLESHOOTING GUIDE E-22TROUBLESHOOTING GUIDE E-23Does audio appear TROUBLESHOOTING GUIDENO E-EAUDIO STEREO Refer to section NO E-ETROUBLESHOOTING GUIDE E-25NO TUNER AUDIO STEREO TROUBLESHOOTING GUIDEDoes signal appear at pin 25 of IC6601 ?TROUBLESHOOTING GUIDE E-27TROUBLESHOOTING GUIDE E-28Pin Name IC DESCRIPTIONSPin No DescriptionPin Name IC DESCRIPTIONSPin No DescriptionSERVO TIMING CHART SYSTEM SWITCH MODE TRANSISTOR SEMICONDUCTOR BASE CONNECTIONSDIODE 44PINY/C/AUDIO/HEAD AMP BLOCK DIAGRAM SYSTEM CONTROL/SERVO/TIMER BLOCK DIAGRAM Y/C/AUDIO HAED AMPTUNER/HIFI 21PIN/OSD/VPS NICAM TUNER/HIFI/21PIN/OSD/VPS/NICAM BLOCK DIAGRAM SERVO/TIMERSYSCON OPERATION BLOCK DIAGRAM POWER BLOCK DIAGRAMOPERATION RSQY 0RSQYPage DECK PRINTED CIRCUIT BOARDSOPERATION OPERATIONPRINTED CIRCUIT BOARDS SYSCON IC6601IC4001 PRINTED CIRCUIT BOARDS SYSCON Q1005Q1002 Q1002 PRINTED CIRCUIT BOARDS SYSCON1005 IC651Page Page 9aW7 gR7nag gQVSOiWQ RWOUdO 0gsgQ aQP1 dkdP aPO0 efRc6UVSV dPURNeVP QVNTcNW488 PcdST RdccTRjXdc SXheaPu hRWTbPjXR SXPVgPblED 1F6bj6A9 VP2 1huhRdc eRQ2uYSP‘ X59B Y/C/AUDIO/HEAD AMP SYSCON/SERVO/TIMERWAVEFORMS 1 RECMECHANICAL EXPLODED VIEW L1-1MECHANICAL REPLACEMENT PARTS LIST ACCESSORY REPLACEMENT PARTS LISTL2-1 CHASSIS EXPLODED VIEW TOP VIEW M1-1CHASSIS EXPLODED VIEW BOTTOM VIEW M1-2CHASSIS REPLACEMENT PARTS LIST M2-1ELECTRICAL REPLACEMENT PARTS LIST SYSCON PCB ASSYELECTRICAL REPLACEMENT PARTS LIST OPERATION 2 PCB ASSY ELECTRICAL REPLACEMENT PARTS LISTOPERATION 1 PCB ASSY AND OTHERS920074