Service Manuals, User Guides, Schematic Diagrams or docs for : panasonic Bullettines Bulletins NV-J40-J42-J45-J47-F55-F77-COMMON FAULT-Bull
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TechInfo Sheet fax: 01344 853689 Audio Visual email: [email protected] Product Group: VCR Model: NV-F55B Date: 17/05/99 Revision No: 01 Document No: 03 Subject: Common Faults NVJ40/42/45/47/F55/F77 COMMON FAULTS Dead power-supply............................................................................. C1110 faulty - 1uF at 400v Poor video playback from cold............................................................. C1127 faulty - 330uF at 10v Power-supply whistling in standby...................................... add 0.01uF capacitor across Pins 3 & 4 of Q1103 Dead power-supply (F55).................................................................... broken earthing print to IC1113 Cutting-out intermittently from play or record..................................... faulty reel sensors - ON2170 Sticking between modes and powering down...................................... dry joints on mechanism solenoid No frame sync on E-to-E.................................................................... C315 faulty - 4.7uF non-polarised No tuning or tuning varies.................................................................. C7666 leaky - 0.01uF at 50v No sound on E-to-E and tuning does not stop.................................... IC7651 faulty - AN5421 Bad patterning while recording........................................................... C831 faulty - 4.7uF at 50v Bad patterning on E-to-E................................................................... C318 faulty - 100uF at 6v Sound on vision patterning................................................................. C313 faulty - 22uF at 6v No E-to-E picture........................................................................ IC302 faulty - VEFH14D or VEFH14G No E-to-E picture or VU display....................................................... IC7001 faulty - M66006FP No colour on playback or record................................................. IC302 faulty - VEFH14D or VEFH14G No colour on record and servo hunting (J45/J47/F55/F77)............... NTSC 4.43 switch on Capstan motor goes high speed....................................................... L2001 open circuit to capstan stator Colour noise at insert edit (F77)............................. missing link between L503 & junction of R518/520 Powers off when tape is inserted................................................... right side cassette housing worn or broken Panasonic CS U.K. Document No: 03 Model: NV-F55B 1
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