6-4. BLOCK DIAGRAM — MAIN SECTION —
CFD-922L
– 21 –
– 22 –
1
CD L
5
21
22
16
4
CNP301(1/3)
L-CH
R-CH
HRP301
RECORD/PLAYBACK
HEAD
HE301
ERASE HEAD
DET
ALC 2
RADIO L
18
15
L.LO
CNP301
(3/3)
R.LO
LINE
TAPE
R-CH
R-CH
VIN2
CNP505
(3/3)
VOUT2
LOGIC
CONTROL
5
CLOCK
4
DATA
VOLUME/SOUND CONTROL
IC302
POWER AMP
IC304
P.CONT
R-CH
SP301
SPEAKER
(L-CH)
SP302
SPEAKER
(R-CH)
J321
REF
L.LIN
L.RO
REC
L.RAD
R.RAD
T301
REC BIAS OSC
Q301
REC
23
TAPE
69
V-CLOCK
V-DATA
P-CON
38–41
42–58
73•74
25–28
17 16 15 14
LIQUID CRYSTAL
DISPLAY PANEL
LCD501
SYSTEM CONTROL
IC501 (2/2)
20 19
3
21
MEGA BASS
64
COM0
|
COM3
SEG0
|
SEG16
R-LATCH
R-CLOCK
R-DATA
R-COUNT
30
RST
MUTE
KEY1
|
KEY4
31
EXTAL
32
XTAL
TX
TEX
TUNER
X501
4.19MHz
X502
153.6kHz
RESET
IC503
3.3V
VOL
2-5
2-5
S601-604
S606-626
CNP601
CNP501
6
6
VDD (SW)
D601
OPR/BATT
29
MODE CHECK
62
INIT
3
Signal path
: FM
: AM
: TAPE PLAY
: TAPE REC
: CD
R-ch : same as L-ch.
CONTROL BOARD
04
PRE BOARD
2
REC/PB
PRE AMP
IC301
MAIN BOARD (2/2)
LCD BOARD
TUNER BOARD
11
5
6
5
MEGA
BASS
CONTROL
Q122
MODE
SWITCH
CONTROL
Q505,506
MODE
SWITCH
Q507
1-4
21-18
5-21
17-1
6
8
6
8
8
9
1
9
1
20
6
14
R.LIN
8
R.IN
L.IN
9
R.RO
i
CNP301(2/3)
CNP505(2/3)
A-MUTE
76
SDA
24
MUTE
Q124
LINE
AMP
Q121
SCL
77
TC-PLAY
79
M
TAPE
SWITCH
Q997
1
2
CNP551
CNP651
24
-1
-2
S301
(REC/PB)
REC
PB
AUDIO 6V
EEPROM
IC504
SDA
SCL
VDD(SW)
CNP322
1
2
3
4
S304
(TAPE PLAY)
M301
CAPSTAN/REEL
MOTOR
17
7
CD3.3V
CD R
3
10
5
10
5
ISS2
68
13
13
ISS1
67
12
12
AC-HI
ISS1
Q303
ISS2
Q302
KH504
(1/2)
5
2
1 2 3 4
11 12
20
19
KH503
KH504
(2/2)
CNP1
11
6
1
1
10
2
9
3
8
4
7
5
CE
CL
DI
DO
AM IN
FM IN
XOUT
XIN
13
MO/ST
10
IF IN
LPF2/MO-ST
LPF1/BAND
IF-OUT
ST-IND
OSC-OUT
9
BAND
7
BAND
8
ST-IND
18 LP-OUT
6 MW/LW
AM
OSC
AM
MIX
FM
MIX
FM
OSC
AM RF-IN
FM
RF-IN
FM
IF-IN
AM
IF-IN
X1
75kHz
PLL
IC2
14
17
13
18
16
15
11
12
19
20
22
4
6
7
10
2
21
24
T1
T2
CF4
L2
L1
CT1
RA6V
RA6V
D1
D2
CT3
CT5
D3
-2
LW
-1
MW
CT3,L3-1
MW
TRACKING
CT5,L3-2
LW
TRACKING
L4
LW FREQUENCY COVERAGE
CT1,L1
FM
TRACKING
L2
FM
FREQUENCY
COVERAGE
T1
MW/LW
IF
T2
FM
IF
ANT1
FM
TELESCOPIC
ANTENNA
IF
BUFFER
AM
DET
FM
DET
IF CUT
AF
BUFFER
FM
MPX
MUTE
AM HIGH
CUT
Q12
IF CUT
R
L
R-CH
RA6V
QUAD
FM/MW/LW FRONT-END, IF DET,
FM STEREO DEMODULATOR
IC1
L4
RA6V
CF2
RA6V
RA6V
RA6V
MW SW
Q41
L3
MW/LW
FERRITE-ROD
ANTENNA
LW SW
Q43
LW SW
Q44
VDD(SW)
REG
Q61
MW SW
Q42
MW/LW
Q14
RA6V
AM
OSC
MIX-OUT
FN
RF-OUT
FN OSC
DET-OUT
MPX-IN
IF REQ
Q510