Kenwood KDC-HD942U Service Manual page 31

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P
BU5V
19
5V
0V
5.0V
IC604
MUTING
LOGIC
0V
5V
0V
D350
4VPRE
Q351
C353
1000P
R356
2.2
BU DET
SW
TP123
Q121
D121
R122
R121
10K
20K
R123
TP122
Q122
10K
SURGE DET
SW
R126
100K
Q123
D124
58
Q142,143
ACC DET
P.CON
SW
PROTECT
D143
Q141
D142
Q142
Q143
R143
R149
R144
22K
560
560
1/2W
1/2W
Q144
Q146
56
P-CONT
ANT-CON
57
Q145,146
POWER ANT SW
63
59
Q151
LINEMUTE
DIMMER
SMALL-LAMP DET SW
3
HI-SIDE SW
IC211
5.0V
1
5
5.0V
VIN
VOUT
0V
2
3.3V
GND
0V
R211
3
4
6
EN
OC
100
3.3V
0V
5
CAUTION : For continued safety, re place safe ty critical com po nents only with manufacturer's rec om mend ed parts (refer to parts list).
Indicates safety critical com po nents. To reduce the risk of electric shock, leakage-cur rent or re sis tance mea sure ments shall be car-
ried out (ex posed parts are ac cept ably in su lat ed from the supply cir cuit) be fore the ap pli ance is returned to the customer.
• DC voltages are as measured with a high impedance volt me ter. Val ues may vary slight ly due to vari a tions between in di vid u al in stru-
ments or/and units.
Q
4
20
R455
A8V-1
2.2
AGND
A8V
A5V REG
8.0V
5.0V
IC10
TP22
20
A5V
OUT
IN
GND
0V
C614
0.01
8 or 11.4V
BU5V
Q350-353
4V PRE+B
BU
BU
Q352
R357
SRV+B
1K
20
Q350
Q353
ILL+B
ACC / BU DET
D123
TP121
R128
2
47K
R127
R134
R135
49
1K
1K
1K
HD3.3V
52
BU
3
9
Q61
Q145
D145
51
4
Q61
FREQ
CONT
SW
20
15
14
D5V
HD1.8V
HD1.2V
3
9
8
WH151
TP164
R161
1
WIRED REMOTE
1K
TP204
CN201
USB I/F
USB GND
4
TP201
D-
USB-
3
D+
USB+
2
TP202
VBUS5V
VBUS5V
1
TP203
OP USB ESD
SIGNAL LINE
GND LINE
B LINE
R
4
20
Q11-13
AUD8V AVR
AUD8V REF
POWER SUPPLY
TP19
Q11
Q12
13.7V
R11
IC11
220
OUT
IN
GND
TP20
1.3V
0V
Q13
AGND
BU5V AVR
Q21
D21
Q22
5VREF
SERVO+B
TP23
Q31
Q33
Q32
Q34
SRVGND
TP24
ILLUMI+B
Q41
Q43
Q42
Q44
PAN GND
R65
R61
30K
20K
TP835
TP61
R64
R63
82K
15K
R62
C62
15K
470P
0V
D5V &
IC61
P.ON5V
SW REG
SWRGND
2.9V
0V
5V
C61
0.1
0V
R68
TP60
R67
L61
47K
22uH
33K
L60
TP62
IC10
: XC6201P502PR
IC11
: M5237ML-CF0J
IC61,71
: LT3685EMSE
IC74
: S-1132B33U5T1G
IC75
: XC6209B502P1
IC101
: S-1132B18U5T1G
IC102
: XC6219B122PR
IC211
: BD6538G
IC371
: AK7600VF
IC451
: E-TDA7716
IC500
: TB2923HQ
IC600
: XC6120N362N1
IC601
: M24C16-RDW6P
IC602
: 30624MGPB98GP
IC604
: 74HC2G02DP
IC851
: W05-1504-00
IC852
: M24256BRDW6TP
Q11,21,31,41 : 2SB1565
Q12,33,43,352 : DTA124EUA
Q13,34,44,353,682
: DTC124EUA
ESD GND
Q22,32,42,121-123,
350,451
: 2SC4081
Q61,72,151
: DTC144EUA
USB CORD
Q141,145
: 2SB1188(Q,R)
Q142,683
: 2SA1576A
S
KDC-HD942U
DC CORD
TP16
J1
9
10
11
12
13
14
15
16
8
7
6
5
4
3
2
1
TP15
4
20
BU
FREQ CONT SW
Q72
R80
47K
R71 33K
R74
R73 10K
33K
R72
C72
15K
470P
0V
IC71
0.9V
HD3.3V
SW
2.8V
0V
REG
3.3V
0V
C71
0.047
R82
TP70 L71
TP72
L70
22uH
47K
53
3
HD1.8V REG
IC101
TP74
TP83
1.8V
1
5
3.3V
VOUT
VIN
0V
2
VSS
3
4
3.3V
NC
ON/OFF
HD1.2V REG
TP834
TP103
TP101
1.2V
3.3V
IC102
3.3V
3
KDC-HD942U (1/3)
Q143
: DTA114EUA
Q144,146
: DTC114YUA
Q351
: 2SC5053
Q401-406
: DTC143TUA
Q407,408
: KRA303-P
Q681
: KRA307-P
Q766,768
: KRC406-P
D1
: S2V60-5009F46
D21
: D1FJ4
D22,352
: UDZW5.6(B)
D31
: UDZW8.2(B)
D41
: UDZW11(B)
D61,71
: CMS14
D121,123,421-423,
431-433,460-465
: UDZW6.8(B)
D124,161,434,439,682,
684
: UDZW6.2(B)
D141,142,144,145,350,
504,508
: 1SR154-400
D143,459
: 1SS355
D151
: UDZW4.7(B)
D201,202
: LVS10C270S030
D370,458,691 : DA204U
D401,402,451-453,456,
457,501
: DAP202U
X34-6320-10 (4/4)
T
1
F1 10A
(F52-0023-05)
FUSE
D1
TP17
C1
3300u16
+
TP18
2
3
BU
4
5
6
7
31

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