Block Diagram - Main Section - Sony HCD-M70 Service Manual

HCD-M70
6-3. BLOCK DIAGRAM – MAIN Section –
REC-L
G
(Page 15)
CD-L
A
(Page 14)
TC-L
F
(Page 15)
TU-L
E
(Page 15)
SJ302
L
AUDIO IN
MD (VIDEO)
R
R-CH
LIQUID CRYSTAL
DISPLAY
LCD801
54 – 85 50 – 53
SEG0 – SEG31 COM0 – COM3
92 TX
X800
32.768KHz
93 TEX
40 XTAL1
X801
4.19MHz
39 EXTAL1
D814
(STANDBY)
D812
TAPE
R-CH : R-ch is omitted due to same as L-ch.
SIGNAL PATH
: TUNER (FM/AM)
: TAPE PLAY
: REC
: CD PLAY
: MD (VIDEO)
TU-ON
D
(Page 15)
CD-ON
C
(Page 14)
L4
11
L3
INPUT
LSELO LIN LOUT
12
VOLUME TONE
L2 SELECT 10 9
13 CONTROL CONTROL
SWITCH
L1
14
CPU
INPUT SELECT SWITCH,
INTERFACE
ELECTRICAL VOLUME,
TONE CONTROL
IC323
1 30 2
REMOTE CONTROL
RECEIVER
IC802
3 88 28 87
AU-MUTE 97
AMP-MUTE 22
H/P CHK 24
SPK PROTECT 9
WP 99
SYSTEM CONTROLLER
IC801 (3/3)
RST 38
S801 – 820
DSG 26
LED DRIVE
98 STAND-BY LED
Q810, 811
CD-SYNC 27
LED DRIVE
96 TC-ON
Q808
TU-ON 25
CD-ON 15
7
REG-CON
HEADPHONE AMP
IN+
5 3
4
IN+
MUTING
MUT
Q100
R-CH
MUTING POWER ON
CONTROL SWITCH MUTING
R-CH
Q312, 313 Q330
COM +12V
D309
SW +5V
WAKE UP
D801
SWITCH
Q802, 803
U-COM +5V
RESET SIGNAL
D802
GENERATOR
IC803
D804, 805,
D807, 808
(LCD BACK LIGHT)
D811
LED DRIVE
DSG
Q807
+5V
TC +5V REGULATOR
Q309
D813
LED DRIVE
CD SYNC CD +8V
Q809
TU +9.5V
D811
LED DRIVE
Q806 TUNER
+5V
CD +5V REGULATOR
Q306
D809
LED DRIVE
Q805 CD
16 16
R-CH
IC324
R-CH
MUTING
Q408, 409
MOS GAIN &
MOS SHORT
OUT
LEVEL SHIFT 14
OUTPUT CIRCUIT
ING STAGE
STAGE PROTECTION
STANDBY/MUTE
POWER AMP
MUTE STBY IC101
10 9
R-CH
DC DETECT
Q310, 311
SUB POWER
BACKUP +5V
TRANSFORMER
+5V
RECT
REGULATOR
D910 – 913
Q901, 903
D917
COM +8V
COM +12V
+8V
REGULATOR
IC304
+8V
REGULATOR
IC306
+9.5V +12V
REGULATOR REGULATOR
Q301 Q355
TUNER ON
SWITCH
Q303, 304
MAIN POWER
TRANSFORMER
+9.5V
RECT
REGULATOR
D906 – 909
Q305
CD ON
AMP +16V
RECT
SWITCH
D902 – 905
Q307, 308 AMP – 16V
POWER ON/OFF
RELAY DRIVE
RELAY DRIVE
Q902
Q902
J301
PHONES
+
L SJ301
–
SPEAKER
IMPEDANCE
USE 6 – 16Ω
–
R-CH
R
+
R-CH
T901
T902
(EXCEPT Singapore)
VOLTAGE
SELECTOR
S901
RY901
(Singapore)
(AC IN)