Read Sony CMT-EP707 / HCD-EP707 Service Manual online
19
19
HCD-EP707
5-4.
BLOCK DIAGRAM – DISPLAY/POWER SUPPLY Section –
SYSTEM CONTROLLER
IC101 (3/3)
POWER ON/OFF
RELAY DRIVE
Q809
MAIN
POWER
TRANSFORMER
TR800
LINE
FILTER
L801
AC IN
SUB
POWER
TRANSFORMER
TR801
RE201
POWER AMP B+
D831, 836
D105
D104
D212
CD-EN
MUTING
D830
D800
RESET 10
PWDET 38
REMOTE CONTROL
RECEIVER
X101
39 REMIN
CD-EN, TU-EN,
MUTING
MUTING
ROTARY
ENCODER
R216
ENCODERA
42
ENCODERB
43
S18
72
S19
71
33 – 31, 29
G1 – G9
KEY1 – KEY3, KEY5
100 – 92
S2 – S17
89 – 73
SW101 – 105,
108 – 125, 901
R216
VOLUME
FLUORESCENT
INDICATOR
TUBE
VFD1
VFD1
RECT
D806 – 809
RECT
D810 – 813
RECT
D833, 834
RECT
D837
D837
RECT
D802 – 805
B+ SWITCH
Q210, 211
B+ SWITCH
Q801, 802
+8V
CD BLOCK B+
+9V
TAPE DECK SECTION,
HEADPHONE AMP,
INPUT SELECT B+
+12V
CAPSTAN/REEL MOTOR B+
+5V
SYSTEM CONTROLLER,
EEPROM B+
STANDBY LED B+
VFD B+
VFD B–
+12V
REGULATOR
U802
+9V
REGULATOR
U700
+5V
FM/AM PLL B+
+5V
FUNCTION SELECT B+
CD DRV B+
+5V
RDS DECODER B+
+5V
TUNER B+
VOLTAGE
DETECT
Q822
POWER
2
RESET
SWITCH
Q101
G
(Page 18)
F
(Page 18)
TU-EN
POWER ON
SWITCHING
Q105
LED DRIVE
Q103
B+ SWITCH
Q206, 207
B+ SWITCH
Q209
+5V REGULATOR
Q205
+5V REGULATOR
D832, R834
AM FREQUENCY
STEP SELECT
SWITCH
Q104
AM FREQUENCY
STEP SELECT
SWITCH
Q106
+5V REGULATOR
Q821
LED101
STANDBY
RECT
D816
D816
RDS CLKIN 37
RDS DATAIN 26
RDATA
RCLK
H
(Page 16)
(AEP, UK)
(AEP, UK)
BUFFER
Q102
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