VC-M25HM (serv.man17). Counter measure for erratic timer operation — Sharp VCR Technical Bulletin (repair manual)

Model
VC-M25HM (serv.man17)
Pages
1 Few pages! See other manuals at the bottom of the first or last page.
Size
7.21 KB
Type
PDF
Document
Technical Bulletin
Brand
Device
VCR / Counter measure for erratic timer operation
File
vc-m25hm-sm17.pdf
Date

View Sharp VC-M25HM (serv.man17) Technical Bulletin online

Sharp Electronics (UK) Limited
Originator AvW   Supervisor                        Approval Date    /   /     Reference TB-T9612010
Revision   
White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
VCR970202
Month of Issue:
        Classification: White
VIDEO TECHNICAL BULLETIN
Page 1 of 1
MODELS
VCM24HM
VCM25HM
VCMH64HM
SYMPTOM When making a timer recording, with the clock set in the 12 hour mode, the recording
stop time fails.
This condition only happens if the start time is set before 12 o'clock and the stop time
is after 12 o'clock. ie  record start time is 11.00AM and the stop time is 1.00PM
This will also happen if the start time is 11.00PM and the stop time is 1.00AM.
Note that this phenomena only occurs if the numeric keys on the remote control are
used to set the timer.
CAUSE
The software does not recognise 1.00PM as the stop time and continues to record
until the tape runs out.
ACTION
If the customer complains of the above phenomena then fit the new version of the
main microprocessor ( IC801 ), which has corrected software fited.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
IC801
Microprocessor
RH-IX1205GEN8
BB
Sharp Electronics (UK) Limited
Originator AvW   Supervisor                        Approval Date    /   /     Reference TB-T9612010
Revision   
White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
VCR970202
Month of Issue:
        Classification: White
VIDEO TECHNICAL BULLETIN
Page 1 of 1
MODELS
VCM24HM
VCM25HM
VCMH64HM
SYMPTOM When making a timer recording, with the clock set in the 12 hour mode, the recording
stop time fails.
This condition only happens if the start time is set before 12 o'clock and the stop time
is after 12 o'clock. ie  record start time is 11.00AM and the stop time is 1.00PM
This will also happen if the start time is 11.00PM and the stop time is 1.00AM.
Note that this phenomena only occurs if the numeric keys on the remote control are
used to set the timer.
CAUSE
The software does not recognise 1.00PM as the stop time and continues to record
until the tape runs out.
ACTION
If the customer complains of the above phenomena then fit the new version of the
main microprocessor ( IC801 ), which has corrected software fited.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
IC801
Microprocessor
RH-IX1205GEN8
BB
Sharp Electronics (UK) Limited
Originator AvW   Supervisor                        Approval Date    /   /     Reference TB-T9612010
Revision   
White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
VCR970202
Month of Issue:
        Classification: White
VIDEO TECHNICAL BULLETIN
Page 1 of 1
MODELS
VCM24HM
VCM25HM
VCMH64HM
SYMPTOM When making a timer recording, with the clock set in the 12 hour mode, the recording
stop time fails.
This condition only happens if the start time is set before 12 o'clock and the stop time
is after 12 o'clock. ie  record start time is 11.00AM and the stop time is 1.00PM
This will also happen if the start time is 11.00PM and the stop time is 1.00AM.
Note that this phenomena only occurs if the numeric keys on the remote control are
used to set the timer.
CAUSE
The software does not recognise 1.00PM as the stop time and continues to record
until the tape runs out.
ACTION
If the customer complains of the above phenomena then fit the new version of the
main microprocessor ( IC801 ), which has corrected software fited.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
IC801
Microprocessor
RH-IX1205GEN8
BB
Sharp Electronics (UK) Limited
Originator AvW   Supervisor                        Approval Date    /   /     Reference TB-T9612010
Revision   
White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
VCR970202
Month of Issue:
        Classification: White
VIDEO TECHNICAL BULLETIN
Page 1 of 1
MODELS
VCM24HM
VCM25HM
VCMH64HM
SYMPTOM When making a timer recording, with the clock set in the 12 hour mode, the recording
stop time fails.
This condition only happens if the start time is set before 12 o'clock and the stop time
is after 12 o'clock. ie  record start time is 11.00AM and the stop time is 1.00PM
This will also happen if the start time is 11.00PM and the stop time is 1.00AM.
Note that this phenomena only occurs if the numeric keys on the remote control are
used to set the timer.
CAUSE
The software does not recognise 1.00PM as the stop time and continues to record
until the tape runs out.
ACTION
If the customer complains of the above phenomena then fit the new version of the
main microprocessor ( IC801 ), which has corrected software fited.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
IC801
Microprocessor
RH-IX1205GEN8
BB
Sharp Electronics (UK) Limited
Originator AvW   Supervisor                        Approval Date    /   /     Reference TB-T9612010
Revision   
White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
VCR970202
Month of Issue:
        Classification: White
VIDEO TECHNICAL BULLETIN
Page 1 of 1
MODELS
VCM24HM
VCM25HM
VCMH64HM
SYMPTOM When making a timer recording, with the clock set in the 12 hour mode, the recording
stop time fails.
This condition only happens if the start time is set before 12 o'clock and the stop time
is after 12 o'clock. ie  record start time is 11.00AM and the stop time is 1.00PM
This will also happen if the start time is 11.00PM and the stop time is 1.00AM.
Note that this phenomena only occurs if the numeric keys on the remote control are
used to set the timer.
CAUSE
The software does not recognise 1.00PM as the stop time and continues to record
until the tape runs out.
ACTION
If the customer complains of the above phenomena then fit the new version of the
main microprocessor ( IC801 ), which has corrected software fited.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
IC801
Microprocessor
RH-IX1205GEN8
BB

Download Sharp VC-M25HM (serv.man17) Technical Bulletin

Here you can view online or download Sharp VC-M25HM (serv.man17) Technical Bulletin in pdf. This Technical Bulletin can help you recover, restore, fix, disassemble and repair Sharp VC-M25HM (serv.man17) VCR. Information contained in Sharp VC-M25HM (serv.man17) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).