Kenwood KDC-M7024 Service Manual page 28

AO
KDC-M7024/MP822
1
SWITCH UNIT (X16-2190-10)
R10
D18 D19
470
D17
R9
D16
510
2
D15
R8
D14
510
D13
R7
D12
510
D10 D11
R6
510
D7 D8
R5
3
330
D4 D5
R4
330
D1 D2
R3
330
KEY ILLUMINATION
SW (GREEN)
4
KEY ILLUMINATION
SW (RED)
S21
24 23 22 21 20 19 18
5
X16-
CN2
2/3
B
6
CAUTION : For continued safety, replace safety critical components only with manufacturer's
recommended parts (refer to parts list).
Indicates safety critical components. To reduce the risk of electric shock, leakage-current or
resistance measurements shall be carried out (exposed parts are acceptably insulated from the
supply circuit) before the appliance is returned to the customer.
• DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to
variations between individual instruments or/and units.
7
28
X16-2190-10
AP
R1
510
D20
S4
5
S5
KS1
S9
6
S10
KS2
S14
SHIFT
S15
KS3
D9
S19 AM
D6
D3
KS4
R16
Q2
1K
4
R18
Q3
1K
5
17 16 15 14 13 12 11 10 9 8
Q1
Q2,3
D1-11,13,15,17
D12,14,16,18,19,21
D20
GND LINE
B LINE
AQ
FM
4 Q ATT
S3 S2 S1
3 AUTO
S8 S7 S6
2 DISP
S13 S12 S11
1 SRC OPEN
S18 S17 S16
DSI
R15
Q1
D21
240
7 6 5 4 3 2 1
CN1
: DTA114YUA or
UN5114
: 2SC4081
: B30-1605-05
: B30-1566-05
: DAP202U or
KDC-MP822 (3/3)
MA142WA
KDC-M7024 (3/3)
AR AS
DTA123JK TC74HCT7007AF
DTC114YUA TC74HC02AF
DTC143TUA
UN5111
UN5114
UN5213
UN5214
UN5216
2SA1576A
BR24C01AF-W
2SB1188
M5237ML
2SC4081
MCH6101
DTA114EUA
DTA124EUA
DTA143EUA
DTC124EUA
DTC144EUA
NJM4580V
DAP202U
LB1930M
DA204U
DTA114YUA
TDA7479D
MA142WA
UN5212
RD6.8M