KEY MATRIX
HEAD
M
MOTOR
FWD
Lch
REV
Lch
Q808
Q806
Q807
Q805
FM SWITCH
AM SWITCH
FM
AM
FIX+B
VCO
3 13
6 54 51
X601
4.5MHz
25
24
EO
AMIF
VCOIN
FM
AM
XI
XO
SL
FMSD
14
12
SYSTEM CONTROLLER
IC 601 (1/2)
PE5107A
SL
FMSD
Q804
9V REGULATOR
FIX+B
Q803
Q802
B.U
SYSPW
ILL+B
ILL+B
IL901-903
FM
OSC
Q201 Q202
FMTV
AM
OSC
AMIFC
VCO
FM+B
AM+B
TUN+B
FMSD
25
26
19 20
15 17
21
14
13
6
7
9
18
41
9 10
14 15
17
19
47
1
2
19
43
40
28
30
31
25
23
18
16
36
32
38
6
34
Q3
FM RF
T31
FM/AM MIX
Q31 CF51
FM/AM IF
CF52
FM IF
CF53
FM IF
T51
FMSL
AMSL
AMTV
AMRF/AGC
CF232 AM IF
FM/AM PROCESSOR
IC 1
PA4023B
FM PROCESSOR
IC 2 PA4024A
TUN-L
FIX+B
A
B
C
FM/AM TUNER UNIT
TUNER AMP UNIT
CN301
ANT
8
KEH-1900,1950
A
1
2
4
B
C
D
1
2
4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
-
KEH-1900/X1M/UC
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QQ 376315150
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