Kenwood LZ-800W Service Manual page 22

P Q
(X35-4170-61) (A/2)
1
5V AVR
D150
13.0V
IC150
IN
J50
ACC+14V 1
F100 1.0A Q151
ACC+14V 2
GND 3
R58 75
GND 4
R 5 VR
R59 75
Q152
10K
G 6 VG
R60 75
47K
X25-
2
CN4
B 7 VB
13.7V IC151
R61 75
1/2
C.SYNC 8 SYNC
V.GND 9
A
R50 100
SC DATA 10 45
R51 100
SC REQ 11 18
R52 100
MC DATA 12 46 13.7V
IC152
R53 100
MC REQ 13 44
R54 100
MC CLK 14 47
R55 100
SC CON 15 48
R56 1K
REMO 16 REM
R57 1K
RESET 17 RST
13.7V IC153
AL 18 L
3 A.GND 19
AR 20 R
CN11
TOUCH
YO R13
1 1 1 26
PANEL
XO 10
2 2 2
22K
Y1
79
SWITCH 3 3 3
X1
ASSY
4 4 4 22K
Q11
(S79-0812) D12
R14
27
10
R15
22K
10
22K
R16
22K
Q12
4
10
22K
22K 22K
Q13
22K
22K
D11
Q14
Q15
L10
10uH
CN600
VDD 1
D603
Q601
4.9V
RESET 2
FLASH Q600
SCK 3 39
22K
SO 4 38
SI 5 37
IC601 22K
5
TEST 6
0V
RESET
GND 7
IC20
PNA
SENSOR
5.0V
R20
R21
10K 3.2V 0V
100
1/2W
D20
6
A30
IC30
4 0V
GND
5.0V 5 5.0V 3
0V 6 2
5.0V
R31
10K
5.0V 7 1
5.0V 8
VCC
REMO
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended
7
parts (refor 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 tha customer.
R S
D100
C104
0.01
4.9V
R101 DC/DC
13.6V
OUT 750K
L101
GND R102 0V 4 5
0V
33K
3 6
IC100
Q150
2 7
2.2K
P-ON 1 8
D102
10K 0V
Q100
0V
R103 C103
1.1K 0.033
5V AVR
5.0V
R105 R106
100 10K
IN OUT
GND
0V 5.0V
IC154
R153 R154
1 5
8V AVR D152 VCC
18K 36K
Q154
0V 2 4 5.0V
7.9V
0V
0V 3
IN OUT GND 0V
ACC
GND
DET
0V
8V AVR
7.8V
IN OUT
GND
0V
76
NC
0V 77
77 X0
0V 78
78 X1
0V 79
79 Y0
80
NC
4.9V 81
VDD
82
77
NC
83
NC
84
NC
85
NC
86
R637
NC
100 0V 87
DIM
78
0V 88
BEEP
89
NC
90
NC
5.0V 91
REMO
22K
D601 92
NC
22K
93
NC
0V 94
TEST
RST
CP605
1K 4.9V
R620
95
SCL
96
5.6K
SDA
R619
0V
97
5.6K
P ON
98
NC
99
NC
100
NC
IC602
S1 S2 S3
SCRN MODE V.SEL
LED+8V
LED+8V
T U
+14V
L102
16V
100uH
+13V
L105
+5.3V
2.7uH
L103
D101
68uH
+5.3V
L104
100uH
SW+5V
MUTE
IC155
5 5.0V
VCC
1
4
2 MUTE
3 5.0V
GND
88
4.9V
0V
4.9V 4.9V
0V
4.9V
MC DATA
4.9V
4.9V
0V
IC600
u-COM
4.9V
0V
4.9V 2.6V 2.4V 0V
C600
100u6.3
4.9V
+
C601
X600
0.01
S4 S5 S6
VOL- VOL+ POWER
IC603
D-A
CONVERTER
•DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to
variations between individual instruments or/and units.
V W
Q701
F700 1.5A
L701
+14V
33uH
R708 Q700
22K
470
Q721
IC700
22K
D700
13.2V 6 5 0V C705
VCC OUT
7 2200P
VREF
DC/DC
4 0V
2.5V GND
Q720 8
C703
IN+ 3
10K SCP
0.8V
1
0.3V
2 R709
47K
RT
9 6.2K
0.5V
IN-
C704
1
0.6V
CT
330P
10
FB
R700 R704 0.8V
0.7V
12K 1M R705
1M
IC800
8
2Q
9
2Q
4.9V 10
2PR
11
2CK
12
53
2D
4.9V 13
2CLR
4.9V 14
VCC
51
4.9V
50 R606
IC801
SP/HP
49
1K 5
NC
Q
48 4.9V
SC CON 48 0V 6
CX
47 4.9V R800
MC CLK 47
330K 7
46 0V
RX/CX
46
45 0V
SC DATA 45
44 0V
8
MC REQ 44
VCC
R607 1K
43 0V
4.9V
OSD TRE 43
42 R608 1K
IC802
OSD CK 42
R609 1K
41 0V
OSD DO 41
1
40 R610 1K
40
OSD CS
2
R611 1K
39
IC802
SCK 39 0V 3
38 R623 100 AND
38
SO
37 R622 100
SI 37
36 4.9V
AVREF1
35 4.9V R612
OSD RST 35
1K R413
34 2.3V
Q400
SP VOL 15 1W
33 ACC+14V
AVSS
32
AVSS
31
R400 Q401
AVSS
30 0V 560
AVSS
29
AVSS
28
AVSS
27 4.6V
Y DT 27
POWER AMP
IC400
26 0V
X DT 26
R410
10K
2.3V 1
E.VOL
HP L OUT
0.9V R402 C405 2
L L IN
15K 0.1
2.6V
HP R OUT
R406 4.9V 3
MUTE MUTE
1K
R403 C406
4
R R IN
15K 0.1
2.6V
C404
47u6.3
2.6V 5
BIAS
+
6
4.9V
BEEP
BEEP LEVEL
C407
2.6V 7
SP IN
0.1
2.6V
R404 R409 C408
8
88 SP BEEP
47K 18K 0.1
0V 9
HP SUSPEND
0V 10
53 SP SUSPEND
X Y
L700
1
C711
4 6
0.22
13.2V 1
IC701
C709 3 7
0V 1 8 0.18
5
VCC
7
Q702 Q703
2
2.9V 2
6 0V
5 0V
13.2V 3
INVERTER
4
GND
0V
7 0V
GND
6
1Q
5
1Q
4 4.9V
1PR
3
1CK
2
1D 2
1 4.9V
1CLR
4 0V
GND
3 4.9V
CLR
2
B
1 0V
A
5 4.9V
VCC
4
1
GND
5V AVR
20 5.2V
HP VCC C419
100u6.3
(X35- ) (B/2)
+
2.6V
CN401
C413 R416
WH1 HEADPHONE
R419 47u6.3 100
19 HP L OUT
1 1
OFF ON
+ J1
HP GND
100
2.6V
2 2
C414 R417
R418 47u6.3 100
18 HP R OUT
3 3
+ KEN
100
17 0V
4 4
C418
HP GND
KEN GND
100u6.3
5 5
16 5.2V +
SP VCC
15 4.4V
2.6V CN400
14 SP+
SP+ 1 1
SP1
13 2.6V SP-
SP- 2 2
4.9V
12
SP/HP
11 0V
SP GND