28JW-73H (serv.man32). Alternative Q702 (revision 2) — Sharp TV Technical Bulletin (repair manual)

Model
28JW-73H (serv.man32)
Pages
2 Few pages! See other manuals at the bottom of the first or last page.
Size
178.69 KB
Type
PDF
Document
Technical Bulletin
Brand
Device
TV / CTR / Alternative Q702 (revision 2)
File
28jw-73h-sm32.pdf
Date

View Sharp 28JW-73H (serv.man32) Technical Bulletin online

CTV2003 12 01
Month of Issue:   December 2003
        
Classification: 
White
TECHNICAL BULLETIN
Page 1 of 2
Sharp Electronics (UK) Limited
Reference – sp030800x
Revision - 2
White – Carry out as required
Yellow – Carry out as required and whenever the unit comes in for service
Red – Carry out on all units
MODELS
32JF73H
32JW73H
28JF73H
32JF74H
32JW74H
28JF74H
28JW73H
28JW74H
REASON
An alternative MOSFET has been fitted in position Q702 in some chassis.
ACTION
When replacing Q702, use the correct part number for the device fitted.  If this is not
possible, use the information given below to modify the circutry accordingly.
REF NO
PART NUMBER
DESCRIPTION
PRICE CODE
Q702
VSSPA07N603-1
MOSFET, SPA07N603-1
        AN
Original Configuration
The parts listed below are fitted to all chassis up to version N6.  These part numbers are the same
as those listed in the service manual.
REF. No
PART NUMBER
DESCRIPTION
PRICE CODE
Q702
VSSPA07N60C-1
MOSFET, SPA07N60C2.A
AN
C709
RC-KZ0296CEZZ
Capacitor, Ceramic 470pF 2KV
AB
R721
VRD-RA2HD102J
Resistor, 1K 5%  1/2W
AA
C719
Not Fitted
Fitting of the alternaitve transistor to version N6 PWB and above
Note that the values of C709 and R721 have changed.  C719 is mounted on the component side of
the PWB.
REF. No
PART NUMBER
DESCRIPTION
PRICE CODE
Q702
VSSPA07N603-1
MOSFET, SPA07N603-1
AN
C709
RC-KZ0294CEZZ
Capacitor, Ceramic 330pF 2KV
AB
R721
VRD-RA2HD331J
Resistor, 330R 5%  1/2W
AA
C719
VCCCCY1HH100D
Capacitor, 10pF 50V
AA
CTV2003 12 01
Month of Issue:   December 2003
        
Classification: 
White
TECHNICAL BULLETIN
Page 2 of 2
Sharp Electronics (UK) Limited
Reference – sp030800x
Revision - 2
White – Carry out as required
Yellow – Carry out as required and whenever the unit comes in for service
Red – Carry out on all units
Fitting of the alternaitve transistor to version N5 PWB and below
Note that the values of C709 and R721 have changed.  C719 is mounted on the print side of the
PWB (see picture below).   C719 is fitted between the gate and source of Q702.
REF. No
PART NUMBER
DESCRIPTION
PRICE CODE
Q702
VSSPA07N603-1
MOSFET, SPA07N603-1
AN
C709
RC-KZ0294CEZZ
Capacitor, Ceramic 330pF 2KV
AB
R721
VRD-RA2HD331J
Resistor, 330R 5%  1/2W
AA
C719
VCCCCY1HH100D
Capacitor, 10pF 50V
AA
Page of 2
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Download Sharp 28JW-73H (serv.man32) Technical Bulletin

Here you can view online or download Sharp 28JW-73H (serv.man32) Technical Bulletin in pdf. This Technical Bulletin can help you recover, restore, fix, disassemble and repair Sharp 28JW-73H (serv.man32) CTR. Information contained in Sharp 28JW-73H (serv.man32) 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).