12
KEH-P6021R,P6025
1
2
3
4
1
2
3
4
D
C
B
A
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM(KEH-P6021R)
Q420
Q415
Q413
Q416
Q710
Q711
Q411
Q481
IC 481
PM4009A
IC 710
HA12187FP
X481
RDS
DECODER
IP-BUS DRIVER
12
11
20
8
37
MUTE
X1
X2
ILB+
EJECT
CSENS
SW5V
DPDT
KYDT
ROT1
ROT0
BL+B
loadsw
MSIN
PEE
69
100
stby
55
65
RIMUTE
LCDPW
6
EJECTIN
4
DPDT
96
KYDT
95
ROT0
29
ROT1
25
23
20
SYSTEM
CONTROLLER
IC 601(2/2)
PE5206A
BUS–
B.U
BUS+
BUS+L
5
8
1
7
1
2
8
6
5
TX
RX
IPPW
SWVDD
77
CSENS
ILMPW
B.U
VDD
7
10
11
14
12
13
2
8
5
FILM–
6
4
CN750
CN551
CN701
Q751
B.U
Q754
Q755
Q753
Q750
Q752
A
TUNER AMP UNIT
FM/AM TUNER UNIT
BZ610
ALARM
BUZZER
16
X610
15
19
3
FLPILM
9
FILM+
72
mute
S750
PDIO
CURRQ
Q410
LOCL
VCC
LOCH
VDD
B.U
stby
B.U
MUTE
LOAD
5
1
4
2
1
3
11
9
20
19
D
DECK UNIT
IC251
HA12229F
IC351
PA2020A
EQ AMP
MECHANISM
DRIVER
CN251
CN252
CN254
CN255
CN253
6
16 MS
Lch
20
FWD
L-ch
REV
L-ch
39
32
33
18
19
17
3
1
5
6
8
7
10
CN256
3
1
5
6
S1
LOAD
S2
MODE
EGN1
REEL
SENSE
M
M
M2
SUB
MOTOR
M1
MAIN
MOTOR
5
2
1
E
REEL SENSE PCB
11
6
5
5
6
17
f/R
DIRO
68
66
DIRO
MS
9
MCMUTE
stby
loadsw
15
13
15
13
59
61
POS
NES
13
11
POS
NES
POS
ES
18
17
18
17
56
57
16
15
SC1
CM
20
B.U
16
16
58
14
SC2
SC1
CM
SC2
SC1
CM
SC2
VDD
CN402
6
21
18
22
19
12 15 16 8
13
3
2
4
ANT
28
27
IC 3
EEPROM
FM/AM 1ST IF 10.7MHz
T51 Q51 CF51 CF52 CF53
IC1
MIXER, IF AMP, DET.
LDET
COMP
CF202
VCC
DI/DO
CE2
CK
CE1
SDBW
SL
FMSD
NL1
NL2
IC 2 FM MPX
AMANT
FMANT
ATT
ATT
AMRF
FMRF
IMG ADJ
RF ADJ
X901
10.25MHz
ANT ADJ
LOCL
LOCH
AMDET
MPXREF 41kHz
AM 2ND IF
450kHz
CREQ
STIND
L ch
1
14
25
23
5
R ch
7
17
20
24
26
WC
NC
NC
FMLOCL
RFGND
11
DGND
10
VDD
9
NC
mute
Q3
VCC
SYSPW
21
SYSPW
DETACH
SENSE SW
VDD
9
Summary of Contents for KEH-P6025
Page 6: ...6 KEH P6021R P6025 A B C 23 27 2 3 EXTERIOR KEH P6021R ...
Page 8: ...8 KEH P6021R P6025 2 4 EXTERIOR KEH P6025 A B C 27 23 ...
Page 28: ...28 KEH P6021R P6025 1 2 3 4 1 2 3 4 D C B A 3 5 KEYBOARD UNIT KEH P6021R CAW1627 TA C ...
Page 30: ...30 KEH P6021R P6025 1 2 3 4 1 2 3 4 D C B A 3 6 KEYBOARD UNIT KEH P6025 C CAW1628 ...
Page 36: ...36 KEH P6021R P6025 1 2 3 4 1 2 3 4 D C B A A TUNER AMP UNIT A ...
Page 37: ...37 KEH P6021R P6025 5 6 7 8 5 6 7 8 D C B A A SIDE B ...