Block Diagram - Main Section - Aiwa CSD-XD55 Service Manual

6-4. BLOCK DIAGRAM — MAIN SECTION —
AEP
Q105
J303
LINE IN
Q205
Q204
CD_IN_R
A
CD_IN_L
(Page18)
Q104
HRP301
RECORD/PLAYBACK
HEAD
L-CH
R-CH
MUTE
S301
HE301
-1 -2 Q106,206
(REC/PB)
ERASE HEAD
REC
PB
Q302
AUDIO 6V
27
80 79
5 6
EEPROM
IC803
L4
AEP
LW FREQUENCY COVERAGE
US,CND,E,SP
AM FREQUENCY COVERAGE
AEP
CONSTANT
VDD (SW)
CURRENT
Q61
D324
AEP
MW/LW
SW
Q14
US, CND, E, SP
CT5,L3-2
LW
TRACKING
D3
LW SW
Q44
CT3,L3-1
RADIO 6V
MW
TRACKING
CT5
L3
CT3
LW SW
AM
Q43
FERRITE-ROD
ANTENNA
-2 -1
AEP
ANT1
LW MW
FM
MW SW
TELESCOPIC
MW SW
Q41
ANTENNA
Q42
RA6V
L3
MW/LW
FERRITE-ROD
ANTENNA
CT1,L1
FM
TRACKING
R.RO
9
R.IN
8
R.LINE
REC/PB
DET
14
PRE AMP
L.RO IC301
4 ALC 2
L.LINE
24
L.IN
5
RADIO L
AEP
6
REF
21 22 16
TU_IN_R
T301
REC BIAS OSC
AEP
Q301
CD SW
Q822,823
Q303
66 67
SYSTEM CONTROLLER
TUNER
IC802 (2/2)
70 71 74 75
6 – 9 26–10 59 57 58 56
LIQUID CRYSTAL
X801 X802
DISPLAY PANEL
32.768kHz 4.19MHz
LCD401
1 2 3 4
11
AM IN
FM/MW/LW PLL
FM IN
12 IC2
6 MW/LW
13
20 19 11 17 18
X1
75kHz
L4
20 19 14
FM/MW/LW FRONT-END, IF AMP,
FM MPX
IC1
AM
OSC
AM
MIX-OUT T1
IF-IN
AM RF-IN
AM
22 4 6
MIX
FM CF4
MIX
FM
RADIO 6V
FM
IF-IN
7
OSC
FM
CF2
RF-IN
FM
2
RADIO 6V RADIO 6V
FM OSC
RF-OUT
24 21 T1
MW AM
L2
IF IF
FM
L1 CT1 D1
D2 L2
FREQUENCY
AEP US,CND,
COVERAGE
E,SP
RADIO 6V RADIO 6V
IC301
ELECTRONIC VOLUME
VOL AMP
VOUT2
LINE AMP VIN2
L.LO
20 8 7
Q101
SURROUND
R.LO R-CH
18
CONT
Q301 LOGIC
LINE 17
TAPE 15
5 4
AEP
CD-CONTROL
B
(Page18)
37 36 32 77 78
VOL
76
60
1
RESET
IC804
2
3.3V
10 7 9 8
Q814
17 13 18
AEP
IF CUT
MW/LW
IF
HIGH
BUFFER
CUT
Q12
AM
DET
DET-OUT
MPX-IN
AF FM
16 15
BUFFER MPX
FM
IF CUT
DET
10
T2
T2
FM
IF
RADIO 6V
19 19
POWER AMP 2
IC305
12 3
STBY
8
POWER AMP 1
R-CH
IC304
12 3
8
MEGA
MUTE
BASS
Q124
U-COM
CONTROLLER
(VDD)
Q122
LEVEL
DETECT
D101,201
D322
TAPE PLAY
LINE B+
AUDIO DETECT
ON/OFF
6V Q808
Q816,817
34 68 35 49
REMOTE
48
46 50 45 44 43 31
AC-HI
VDD (SW)
Q813
Q812,D807
D405
OPR/BATT
KEY3
S413-418,
KEY2
S408-412,
KEY1
S401-407
R-OUT
11 TU_R_OUT
L-OUT
MUTE
12
TU_L_OUT
• 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
CSD-XD55
Ver 1.1
SP103
SPEAKER(LCH)
R-CH
SP203
SPEAKER(RCH)
J301
i
SP101
TWEETER
(L-CH)
SP102
SPEAKER
(L-CH)
SP201
TWEETER
SP202 (R-CH)
SPEAKER
(R-CH)
VDD (SW)
S301
(TAPE PLAY)
M
M301
CAPSTAN/REEL
MOTOR
REMOTE
CONTROL
1
RECEIVER
IC401
3
REMOCON
VCC
D804
D406
(BACK LIGHT)
+6V LINE BUFF
Q820
KEY NETWORK