CSD-XD55
19
19
B
5
21
22
16
4
L-CH
R-CH
HRP301
RECORD/PLAYBACK
HEAD
HE301
ERASE HEAD
DET
Q204
Q104
ALC 2
RADIO L
18
15
L.LO
R.LO
LINE
TAPE
R-CH
TU_IN_R
TU_IN_L
TAPE
LOGIC
5
CLOCK
4
DATA
POWER AMP 1
IC304
STBY
D322
AUDIO
6V
R-CH
R-CH
SP103
SPEAKER(LCH)
SP203
SPEAKER(RCH)
SP102
SPEAKER
(L-CH)
SP202
SPEAKER
(R-CH)
J301
REF
L.LINE
L.RO
REC
L.RAD
R.RAD
T301
REC BIAS OSC
Q301
ISS1
66
TAPE
37
V-CLK
SURROUND
CONT
V-DATA
CD
CD-CONTROL
26–10
6 – 9
LIQUID CRYSTAL
DISPLAY PANEL
LCD401
SYSTEM CONTROLLER
IC802 (2/2)
77
36
78
DBB
68
LINE IN
34
COM0
|
COM3
S0
|
S16
EEPROM
IC803
REMOTE
CONTROL
RECEIVER
IC401
REMOCON
VCC
SCL
SAD
46
MODE CHK
50
WP/INI
Q813
Q812,D807
VOL
48
1
3
KEY1
45
KEY2
44
KEY3
B/LIGHT
CONT
43
31
REC/PB
PRE AMP
IC301
12
3
MEGA
BASS
CONTROLLER
Q122
LINE B+
ON/OFF
Q816,817
20
6
14
R.LINE
8
R.IN
L.IN
9
R.RO
i
A-MUTE
35
MUTE
Q124
LEVEL
DETECT
D101,201
TC-PLAY
49
M
TAPE PLAY
DETECT
Q808
24
REC
27
-1
-2
S301
(REC/PB)
REC
PB
VDD (SW)
Q820
KEY3
KEY1
KEY2
S301
(TAPE PLAY)
M301
CAPSTAN/REEL
MOTOR
17
CD_IN_R
CD_IN_L
(Page18)
S413-418,
S408-412,
S401-407
6
5
79
80
AUDIO 6V
Q302
AC-HI
REMOTE
TU_R_OUT
TU_L_OUT
POWER AMP 2
IC305
12
8
8
3
U-COM
(VDD)
VDD (SW)
A
ISS2
67
Q303
Q814
KEY NETWORK
D405
OPR/BATT
D406
(BACK LIGHT)
LINE BUFF
D804
VIN2
VOUT2
IC301
ELECTRONIC VOLUME
8
7
VOL AMP
J303
LINE IN
Q105
Q205
LINE AMP
Q101
MUTE
Q106,206
AEP
CD SW
Q822,823
AEP
AEP
SURROUND
CONT
Q301
32
SP101
TWEETER
(L-CH)
SP201
TWEETER
(R-CH)
+6V
AEP
(Page18)
57
59
58 56
60
R-LAT
R-CLK
R-DATA
R-COUNT
76
RST
B-MUTE
74
X1
75
X2
TUNER
X802
4.19MHz
RESET
IC804
70
XT1
71
XT2
X801
32.768kHz
3.3V
1
2
1 2 3 4
13
20
19
CE
CL
DI
DO
MO/ST
XOUT
XIN
18
17
11
LP-OUT
LP-IN
PD
10
IF IN
LPF2/MO-ST
LPF1/BAND
IF-OUT
ST-IND
OSC-OUT
9
BAND
7
BAND
8
ST-IND
11
12
AM IN
FM IN
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
FM/MW/LW 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
RADIO 6V
RADIO 6V
D1
D2
CT3
CT5
D3
-2
LW
-1
MW
CT3,L3-1
MW
TRACKING
CT5,L3-2
LW
TRACKING
L4
LW FREQUENCY COVERAGE
AM FREQUENCY COVERAGE
CT1,L1
FM
TRACKING
L2
FM
FREQUENCY
COVERAGE
T2
FM
IF
T1
MW
IF
AM
IF
ANT1
FM
TELESCOPIC
ANTENNA
L3
AM
FERRITE-ROD
ANTENNA
IF
BUFFER
AM
DET
FM
DET
IF CUT
AF
BUFFER
FM
MPX
MUTE
MW/LW
HIGH
CUT
Q12
IF CUT
R-OUT
L-OUT
RADIO 6V
QUAD
FM/MW/LW FRONT-END, IF AMP,
FM MPX
IC1
L4
RADIO 6V
CF2
RADIO 6V
RADIO 6V
RADIO 6V
MW SW
Q41
L3
MW/LW
FERRITE-ROD
ANTENNA
LW SW
Q43
LW SW
Q44
CONSTANT
CURRENT
Q61
MW SW
Q42
MW/LW
SW
Q14
RA6V
AM
OSC
MIX-OUT
FM
RF-OUT
FM OSC
DET-OUT
MPX-IN
VDD (SW)
D324
AEP
US,CND,
E,SP
AEP
AEP
AEP
AEP
US, CND, E, SP
US,CND,E,SP
AEP
6-4. BLOCK DIAGRAM — MAIN SECTION —
• R-ch is omitted due to same as L-ch.
• Signal path
F
: FM
f
: MW
E
: TAPE PLAY
a
: TAPE REC
J
: CD
• Abbreviation
CND : Canadian model
SP : Singapore model
Ver 1.1
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