- #311 transistor cassette tape manuals#
- #311 transistor cassette tape manual#
- #311 transistor cassette tape portable#
- #311 transistor cassette tape code#
#311 transistor cassette tape portable#
Its uses ranged from portable audio to home recording to data storage for early microcomputers. Although it was originally intended as a medium for dictation, improvements in fidelity led the Compact Cassette to supplant reel-to-reel tape recording in most non-professional applications. =+'+1+#8+&>?> =+.Compact Cassette, often referred to as audio cassette, cassette tape, cassette, or simply tape, is a magnetic tape sound recording format. Add capacitor (VCKYD41HB101K 100pF) to two positions, as follows: a) Between RJ107 to GND (Ground). Add 120pF surface mount capacitor to the main PWB at the locations C810 and C812. This is most likely when the digitron displays 1:16:11 pr1. The VCR can start up automatically, play to the end of the tape where the end-sensor will action the tape to rewind to the start of the tape and finally eject.Įlectrical noise on the matrix of the operation PWB will cause the unit to set into play mode. In certain circumstances it may be possible for the VCR to automatically start up from standby mode. SYMPTOM This is an addition to technical bulletin number VCR991101. MODELS VCM301HM VCM331HM VCM730HM VCM311HM VCMH711HM VCMH721HM VCM311AHM VCMH721HM Note that C810 and C812 are located at the front edge of th
#311 transistor cassette tape code#
REF NO C810 C812 DESCRIPTION Capacitor, 120pf SMD Capacitor, 120pf SMD PART NUMBER VCCCCY1HH121J VCCCCY1HH121J PRICE CODE AA AA Fit SMD capacitors C810 and C812 to the PWB. ACTION Take the following remedial action. Erratic operation of the start and/or end sensor. Noise on the operate PWB (normally when the display reads 1:16:11 pr1). CAUSE This problem can be caused by a number of reasons 1. Normally the machine enters the playback mode (if a tape is inserted), plays to the end then rewinds and returns to standby. SYMPTOM In certain circumstances, it may be possible for the VCR to start up automatically from the standby mode. Month of Issue: October 1999 Classification: White of 1 Reference TB-T9905071 Revision 1 White Carry out as required, Yellow Carry out as required and whenever the unit comes in for service, Red Carry out on all units RH-IX1420GEN4 VCM311HM, VCM711HM, VCM301HMĭESCRIPTION Microprocessor Microprocessor Microprocessor EEPROM Replace IC701 and IC705 from the listing below. SYMPTOM The PDC function does not work if the start time minutes are other than 00, 05, 10, 15, 20, 25, 30, 35, 40, 45, 50 or 55. Month of Issue: August 1999 Classification: White of 1 White Carry out as required Yellow Carry out as required and whenever the unit comes in for service Red Carry out on all units
Replace R711 and IC702 using the part numbers given below.ĭESCRIPTION Motor Drive IC Resistor, 1R 0.25W R711 open circuit and IC702 short circuit. Replace Q651 where necessary and bending it away from the transformer, as shown in the diagram below.ĭESCRIPTION Resistor Capacitor Coil Transistor If the PWB is damaged so that this component can not be fitted, follow the instructions on page 2 to fit a radical component. This may lead to Q652 and R658 failing as well.Ĭarry out the following circuit change. SYMPTOM Failure of the bias oscillator, leading to permanent erase or loss of the linear audio track during record and playback.ĭue to an increase in the localised heat generated by T651, Q651 can go out of tolerance. MODELS VCM301HM VCM321HM VCMH721HM VCM302HM VCM331HM VCMH73HM Month of Issue: February 1999 Classification: Yellow of 2
#311 transistor cassette tape manual#
For further information on items not covered by this supplement refer to the Service Manual for VC-M321HM. This service manual covers only those items that differ from the VC-M321HM. In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified be used.
#311 transistor cassette tape manuals#
Sharp VC-M311AHM free download VCR, VHS, tape drives service manuals and repair informationĮlectronics > Consumer electronics > Video recorders VCR
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