Schematic Diagram - Main Board (6/6); Printed Wiring Board - Key Board; Schematic Diagram - Key Board - Sony HT-CT180 Service Manual

4-8.

SCHEMATIC DIAGRAM - MAIN Board (6/6) -

1 2
MAIN BOARD (6/6)
A
C277 "18PF/5%" C277 "18PF/5%"
C458 C458
NC/15PF NC/15PF
2PIN/2.0mm 2PIN/2.0mm
1
1
2 C281 "18PF/5%" C281 "18PF/5%"
2
XP12 XP12
B
NFC Module (NFC-FS2) APPLICATION
4-9.

PRINTED WIRING BOARD - KEY Board -

• See page 18 for Circuit Boards Location.
1
KEY BOARD
(COMPONENT SIDE)
A
B
KEY BOARD
(CONDUCTOR SIDE)
C
HT-CT180
3 4
STB_3V3
D21 D21 R217 R217
4.7K 4.7K
BAT54S BAT54S
R139 R139 20K 20K
TP60 TP60
NFC_INT
NFC_INT
R136 R136
D20 D20
20K 20K
C286 C286
BAT54S BAT54S
NPN_3DG3904M NPN_3DG3904M
1000pF/50V/X7R 1000pF/50V/X7R C289 C289 NFC R135 R135 100K 100K
Q13 Q13
47pF/50V/NP0 47pF/50V/NP0 R140 R140
C292 C292
100K 100K
100pF/50V/NP0 100pF/50V/NP0
• : Uses unleaded solder.
2 3
5 6 7
STB_3V3
R143 R143
NC/100K NC/100K
BT_NFC
BT_NFC
NFC_INT R102 R102 NC/10K NC/10K
Q10 Q10
NC/NPN_3DG3904M NC/NPN_3DG3904M

4-10. SCHEMATIC DIAGRAM - KEY Board -

1
KEY BOARD
A
6PIN/1.25mm 6PIN/1.25mm
XP4 XP4
1
1
2
2
3
3
4
4
5
5
6
6
B
25 25
2 3 4
POWER R86 R86 33 33
POWER
INPUT
BT_Pairing
VOL+
VOL- INPUT R102 R102 33 33
R116 R116
BT_Pairing 33 33
R85 R85
VOL+ 33 33
VOL- R87 R87 33 33
HT-CT180
5
K2 K2
POWER POWER
K3 K3
INPUT INPUT
K4 K4
PAIR PAIR
K5 K5
VOL+ VOL+
K6 K6
VOL- VOL-