Kenwood LZ-800W, Service Manual, Page: 20 / 31

B C A D E
2
4
3
5
6
7
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
+14V +14V GND GND R G B SYNC GND SC DA
T
A
SC REQ MC DA
T
A
MC REQ BP
CLK
SC CON REMO RESET SPL SP
GND
SPR
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
1
2 3 4 5 6 7 8 9
10
11
12 13 14 15 16 17 18 19 20
21
22 23 24 25
SDA
SCL
AMUTE
TEST
VSYNC
PARK
VDD
S MUTE
RGB SW
VO2
VO1
VI3 VI2
VI1
VSS
AS2
AS1
AO2
AO1
FMTRN ON
FMSTB FMCLK
FMDA
T
A
T
VMUTE PLLENB PLLCLK
PLLDA
T
A
M S
ST
BIL
TYPE3 TYPE2
TYPE1
SMETER
AVSS
T IN T
COL
AVREF1
SI
SO
SCK
RXD
TXD
NAVI CKI
NAVI CKO
SC REQ
MCDATA
SCDATA
BPCLK
DIV DK I BG VDD
X2 X1
VSS XT2 XT1 RESET SC CON MC REQ ACC PON REFCON A
VDD
A
VREF0
SD
3 1 2
5
9
6 7
10 11
4
8
12
13
IN OUT
GND
2.2u50
C5
+
0.1
C7
R36 47K
F2 1A
2.2K
C10 100u6.3
+
R19
680
R20
47u16
C14
+
220u10
C1
1
+
R52 75 R53 75 R54 75 R55 75
R 8 B G
R56 100 R57 100 R59 100 R61 100 R60 100 R64 100
44 46 16 47 45 17
SPL
SPR
47u16
C13
+
C8 0.01
47u16
C247
2.2K
R235
100u6.3
C246
+
+
R218 1K
R4 1K
R3 1K
R2 1K
98
94
79
76
77
78
R8 1K
100K
R1
R13 1K R12 1K
R9 1K
67 68 69 70 73 74 75
R220 100K
R221 100K
R217 100
R216 100
R215 100
R40 22K
R38 22K
100K
R245
17
X1
5
4
1
2
3
0.1
330u6.3
+
47K
R35
0.1
0.01
C20
35
34
38
37
40
39
41
45
44
47
46
REMO
SW5V
VR
Rch
VG
RX
VB
SYNC
TX
Lch
R242 1K
470
R70 R243
470
6 3
1
IN+
2
INL+
8
OUTL
7
VCC
NL
+
C45
10u16
SVRR
INR+
4
GND
OUTR
5
NR
DGND
AGND
VGND
R71 R244
470 470
40
41
B
G
R
REMO
22u6.3
C42
+
1000P
1000P
1K
R67
2.2u50
+
C41
2.2u50
+
C43
1K
R69
C256
C257
C6 C3
RST
REMO
RST
5.6K
R43
5.6K
R42
1 2 3 4 5 6 7
VCC RESET SCK SO SI TEST GND
94 37 38 39 RST
ACC5V
16
RST
5V
9V
V5V
PRK SW
ACC
FM-TX
C19
10K
R251
0.01
C262
NC
IN
GND
OUT
VCC
R219 100K
100K
R129
R7 1K
R11
15K
1/2W
680
R14
91
90
R6 1K
NT PAL
R33 22K R32 22K
L1
R28 12K
P
ARK
4
1
5
2
GND
6
3
ACC
5A
E1
F1
2200u16
C1 0.01
C2
+
R39 22K C18
0.01
10K
R34
22K
R37
R41
R232 100K
100K
18
18
SYNC
5
1
2
3
4
IC4
CN4
CN3
D3
5V REG
D9
Q6
D38 D37
Q4
Q5
5V AVR
8V AVR
Q40
u-COM
RESET IC
D13 D14
NAVI
D18
D15
CN2
D5
D6
D36
Q8
Q2
Q1
SWITCH
SWITCH
SWITCH
5V AVR
INVERTER
SWITCH
ISOLATION
AMP
CN1
D1
SWITCH
Q7
D8
IC3
IC1
IC4
IC9
(X25-8630-61)
DC CORD
(E30-4856-15)
IC24
22K
22K
22K
22K
47K
10K
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended
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.
0V
4.9V
5.12V
0.19V
4.88V
4.9V
4.88V
4.84V
4.87V
4.87V
0V 4.9V 4.88V 4.9V 4.88V 4.88V 4.88V 4.88V 4.88V 4.89V 0V
1.27V
0V
2.53V
4.9V
2.37V
0V
0V
0V
0.02V
4.9V
0.05V
0.05V
0V
0V
4.87V
4.9V
0.48V
4.9V
4.88V 0.01V 4.86V 4.88V 4.88V
4.9V
4.88V
4.86V
0V
12MHz
4.66V 5.04V
5.04V
5.23V
8.8V
4.63V
5.39V 0.04V
0V
0V
1 3
2
4.9V 13.9V
0V
0V
0V
5.0V
0V
0V
4.91V
0V
5.0V