HT-S20R
25
Sony CONFIDENTIAL
For Authorized Servicer
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
For Printed Wiring Boards.
Note:
•
: Pattern from the side which enables seeing.
(The other layers’ patterns are not indicated.)
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
For Schematic Diagrams.
Note:
• All capacitors are in
μ
F unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω
and 1/4 W or less unless otherwise
speci
fi
ed.
• Circuit Boards Location
Note 1:
Among mounted electrical parts on each board, only parts
that are described in the electrical parts list can be replaced
for repairing.
The parts that are not described in the electrical parts list
cannot be replaced with single for repairing.
In that case, replace the complete mounted board.
Schematic diagram and printed wiring board are described
for reference purposes in this service manual.
Note 2:
When the IC501, IC502, IC503 on the MAIN board, or
the complete MAIN board is replaced with a new part,
spread the compound for heat radiation to the touching
portion between the IC501, IC502, IC503 on the MAIN
board and the heatsink.
Note:
The components identi
fi
ed by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number speci
fi
ed.
Note 1:
Among mounted electrical parts on each board, only parts
that are described in the electrical parts list can be replaced
for repairing.
The parts that are not described in the electrical parts list
cannot be replaced with single for repairing.
In that case, replace the complete mounted board.
Schematic diagram and printed wiring board are described
for reference purposes in this service manual.
Note 2:
When the IC501, IC502, IC503 on the MAIN board, or
the complete MAIN board is replaced with a new part,
spread the compound for heat radiation to the touching
portion between the IC501, IC502, IC503 on the MAIN
board and the heatsink.
TOUCH KEY board
POWER board
BT module
(BT1)
DISPLAY board
USB board
MAIN board
SYS SET
2021/02/10 22:25:21 (GMT+09:00)
