Schematic Diagram Of H3 And H4 Boards - Sony KE-61MR1 Service Manual

(9) Schematic Diagram of H3 and H4 Boards

1 3
2
A
S171 S172 S173
CH UP CH DW VOL UP
B
R172
1.5k R173 R174
2.7k
:CHIP 5.6k
:CHIP :CHIP
C
D171
R171
DAP202K-T-146
1.2k
:CHIP
D
E
H3
[KEY INPUT]
— H3 BOARD —
CN171
D171
C171
R171
R175
<COMPONENT SIDE> <CONDUCTOR SIDE>
4 5 6
CN173
#
:DIP
1 GND
CN172
#
S174 S175 S176
WHT-L
VOL DW SELEC SERVICE
:S-MICRO
1 GND
2 NC
R175 3 NC
15k
:CHIP 4 GND
CN171
C171
4P
0.01
WHT
F:CHIP
:1.5DL
1 GND
2 GND
3 KEY-WAKE
4 KEY1
TO H1 BOARD
CN107
H3
(KEY INPUT)
B-SS4373<K..>-H3.
• H3 BOARD SEMICONDUCTOR LOCATION
Ref.
*
D171 q;
* : Refer to Terminal name of semiconductors in
silk screen printed circuit (see page 4-16)
7 1
2
A
R191
1k
1/16W
:CHIP
C192
0.01
F:1608
B
C191
S191
0.01
F:1608
POWER
C
CN192 CN191
# 6P
WHT
:DIP
:1.5DL
TO H1 BOARD
CN106
D
E
H4
[POWER KEY]
— H4 BOARD —
CN192
<COMPONENT SIDE> <CONDUCTOR SIDE>
3 4 5
H4
(POWER KEY)
D191
#
B-SS4373<K..>-H4.
C192
D191
C191
6 7
KE-61MR1 (K) 4-55