Table of Contents
Advertisement
HCD-M70
6-9.
SCHEMATIC DIAGRAM – MAIN Board (1/2) – •
(AEP,UK)
FM 75Ω
ANTENNA
(EXCEPT AEP,UK)
See page 25 for Waveforms.
(1/2)
C170,270
∗
SJ302
0.022
(EXCEPT SP,AUS)
2P
R114
0.01
(SP,AUS)
47k
L
AUDIO IN
R214
MD(VIDEO)
47k
R
R113
R213
4.7k
4.7k
CN301
17P
SOL 12V
END_SW
END SW
PLAY_SW
PLAY-SW
B+5V
MO +12V
TC_SW
TC-SW
R320
330k
MO GND
TCOUT_L
L-OUT
+8.0V
TCREC_L
REC IN-L
A-GND
(Page 21)
LINE_MUTE
LINE MUTE
REC/PB
REC/PB
TCOUT_R
R-OUT
REC
REC IN-R
REC_MUTE
REC-MUTE
ALC_CON
ALC CONT
TU1
SUPPLIED WITH
THE ASSEMBLED
BLOCK
BB1
C211
R203
TU_R
1
10k
C111
R103
TU_L
1
10k
AA1
AM
AA2
AA3
AA4
AA5
AA2
JR307
0
ST-DIN
AA5
JR308
0
ST-CE
AA3
ST-CLK
AA4
ST-DOUT
AA1
TUNED
BB2
RDS-IN
BB3
RDS-DATA
MD_R
R-OUT
MD_L
L-OUT
TU ON
TU-ON
L304
4.7µH
GND
GND
DC DET
(Page 27)
AMP-MUTE
BACKUP5V
A-GND
REG-CON
CD8V
VOL-SCK
VOL-SCK
CD 5V
VOL-SDA
VOL-SDA
CN302
21P
•
See page 32 for IC Block Diagrams.
JR304
0
C163
4.7
R106
R105
R101
16V
3.3k
R115
2.2k
4.7k
C115
0
4.7
50V
JR311
JR101
0
0
C114
4.7
R118
R107
50V
1k
4.7k
C302
1000p
C101
C348
4.7
100p
50V
INPUT SELECT
SWITCH,
ELECTRICAL
VOLUME,
TONE CONTROL
IC323
LC75342
R218
1k
C215
JR201
4.7
0
50V
R201
R207
4.7k
4.7k
R215
R205
C263
0
2.2k
4.7
16V
JR312
0
JR301
0
+8V REGULATOR
Q341
Q342
D302
2SA950-Y-TPE2
2SA950-Y-TPE2
IC306
11ES2-
KTA7808API
TA1B
O
Q341,343
Q342,344
G
R180
R280
CAPSTAN/REEL
TRIGGER
4.7k
2.2k
MOTOR DRIVE
PLUNGER DRIVE
C333
C368
C372
220
100p
Q343
Q344
10V
SRC1202S
SRC1202S
C332
220
10V
M_CON
S_CON
R317
47k
R318
47k
(AEP,UK)
DC DET
STK_MUTE
B/UP
STK_POWER
STBY_RELAY
22
22
C131
C376
R222
R123
R122
4.7
100
10k
10k
10k
16V
16V
C150
4.7
16V
R130
R121
4.7k
2.2k
R120
220k
R220
220k
HEADPHONE AMP
IC324
NJM3414A
GND
C130
100p
R131
47k
R331
10k
VCC
R304
100
D314
1SS133
R350
4.7k
D309
MTZJ-T-77
-7.5C
Q330
SRC1202S
POWER ON
C304
C326
100
10
MUTING
16V
10V
Q306
Q305
KTC2026
KTC2026
+5V REGULATOR
+9.5V REGULATOR
Q301
KTC3205
JR340
Q307,308
+9.5V REGULATOR
0
CD ON
SWITCH
R314
100
R312
Q307
1k
SRA2202S
R310
100
I
Q308
SRC1202S
0.1
C330
0.1
CD_ON
R371
R375
C381
4.7k
47k
330p
Q302
R373
2SC2412K
1k
DET AMP
RDS DECODER
IC326
BU1924F
R372
R374
R376
470k
100k
68k
T2
CMP
T1
VSS3
C380
0.1
VSS2
VSS1
C382
0.01
VDD2
VDD1
C385
R377
47
C384
470
16V
51p
X1
MUX
C383
56p
XO
VREF
X301
4.332MHz
NC
RDATA
D320
RCLK
QUAL
MTZJ-T-77
-4.3B
(AEP,UK)
BB1
BB2
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER (FM/AM)
(
) : CD PLAY
〈〈
〉〉 : TAPE PLAY
C250
4.7
16V
R221
2.2k
C231
4.7
16V
R230
4.7k
C230
100p
C260
10
R260
R231
10V
47
47k
A1
C160
R160
10 10V
47
A2
A5
A6
A7
A10
A11
A13
Q303
SRA2202S
(Page 23)
Q303,304
TUNER ON
SWITCH
Q304
SRC1202S
TU ON
A16
A17
C386
560p
C387
4.7
50V
JR309
0
BB3
A18
A19
Advertisement
Table of Contents
