Sony HCD-EC68P, Service Manual

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HCD-EC68P/EC78P
HCD-EC68P/EC78P
25 25
6-1. BLOCK DIAGRAM - CD SERVO, TUNER Section -
SECTION 6
DIAGRAMS
OPTICAL PICK-UP BLOCK
(KSM-213DCP)
B
C
D
E
A
F
SP+
SP-
LD
PD
VC
AUTOMATIC
POWER
CONTROL
Q301
FOCUS/TRACKING COIL DRIVE,
SLED/SPINDLE MOTOR DRIVE
IC401
CD-MP3 PROCESSOR
IC101
VO1+ 2
VO1- 1
IN1 3
SL+
SL-
VO2- 12
VO2+ 11
IN2’ 9
T+
T-
VO3+ 18
VO3- 17
IN3’ 20
F+
F-
CD MECHANISM
DECK
M1-
M2+
M2-
M1+
VO4+ 26
VO4- 27
IN4’ 24
MUTE 7
97 FPi1 (B)
94 FNi2 (C)
96 FPi2 (D)
100 TNi (E)
95 FNi1 (A)
98 TPi (F)
91 LDo
MDi
84 VRo
13 DMo
92
12 FMo
10 TRo
9 FOo
XO
XI
X102
16.9344MHz
S201
(LIMIT)
24
23
IO0 (/HSO) 20
LO CD-L 30
RO R-CH 27
BUS0 38
BUS1 39 I/O-CD-BUS0 17
I/O-CD-BUS1 18
BUS2 (SO) 40
BUS3 (SI) 41
BUCK (CLK) 42
XCCE 43
PIO0 48
I/O-CD-BUS2 19
I/O-CD-BUS3 20
O-CD-BUCK 25
O-CD-CCE 26
XRST 37 O-CD-RST 27
O-DR-MUTE 23
I-REQ 24
SBSY 54
O-3CD-M1+/O-CDM-M1+ 8
O-3CD-M1-/O-CDM-M1- 10
O-3CD-M2+/NC 11
O-3CD-M2-/NC 12
O-CD-SBSY 43
B
A
M M
MOTOR
DRIVER
IC303
S001
DISC TRAY
OPEN/CLOSE DETECT
CLOSE
OPEN
M001
(LOADING)
(EC68P/EC78P: US, Canadian)
(EC78P: UK)
MOTOR
DRIVE
Q311 - 318
SW3
SW2
I-CHACK
SW1 I-3CD-SW1/O-CDM-OPEN 7
I-3CD-SW3/O-CDM-CLOSE 5
I-3CD-SW2/NC 6
I-3CD-CHACK 21
I-STOCK
I-OPEN
I-CLOSE I-3CD-STOCK 22
I-1CD-CLOSE_OPEN/NC 48
AM/FM-DET, OSC, MIX, PLL, IF AMP
IC801
36 FM RF-IN 8 FM IF-IN 22 MPX-IN
1 AM RF-IN
31 AM-OSC
33
I-TU-DO
56
O-TU-CLK
55
O-TU-CE
57
O-TU-DI
39
I-TU-ANSD
X801
75kHz
20 19
XIN XOUT
16
DI
17
CL
15
CE
18
DO
25
AGC
3
CN801
ANTENNA
FM/AM
1
BAND-PASS
FILTER
FL803
AM
TRACKING
L805
AM FREQUENCY
COVERAGE
L801
D801
7 AM IF-IN
T801
AM IF
34 FM RF-OUT
FM
TRACKING
L804
32 FM-OSC
FM FREQUENCY
COVERAGE
L803
+9V
11 FM-DET
FM
DETECTOR
L802
3 FM-MIX 23 FM DET-OUT 12 L-OUT
13 R-OUT R-CH
TUNER-L
5 AM-MIX 24 AM DET-OUT
CF801
• SIGNAL PATH
: AM
: CD PLAY
• R-ch is omitted due to same as L-ch.
: FM
SYSTEM CONTROLLER
IC301 (1/2)