Sony CDX-1000RF Service Manual ▷ View online
9
1
tension spring (KF1)
8
compression spring (FL)
7
chassis (OP) (O/S) assy
9
compression spring (FL)
2
tension spring (KR1)
5
Fit lever (D) in the
direction of the arrow.
3
damper (T)
4
damper (T)
6
Turn loading ring in the
direction of the arrow.
1
P 2x3
2
sled motor assy
3
optical pick-up block
2-9. CHASSIS (OP) (O/S) ASSY
2-10. OPTICAL PICK-UP BLOCK
10
IC3
CN1
IC1
CN2
FOCUS GAIN ADJ
RV4
TP
(RF. GND)
IC2
TP
(RF)
CN3
RV1
FOCUS BIAS ADJ
RF signal waveform
VOLT/DIV: 200 mV
TIME/DIV: 500 nS
TIME/DIV: 500 nS
level: 1.0 – 1.5 Vp-p
SERVO board
TP (RF)
TP (RF. GND)
oscilloscope
+
–
–
CD SECTION
Note:
1. CD Block basically constructed to operate without adjustment.
1. CD Block basically constructed to operate without adjustment.
Therefore, check each item in order given.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use the oscilloscope with more than 10 M
3. Use the oscilloscope with more than 10 M
Ω
impedance.
4. Clean an objective lens by an applicator with neutral detergent
when the signal level is low than specified value with the following
checks.
checks.
Focus Bias Adjustment
Setting: This adjustment is performed with the set placed
horizontally.
Focus Gain Adjustment (Coarse adjustment)
This adjustment is not required unless the following parts are replaced:
•
•
Optical pick-up
•
RV4
Procedure:
1. Set RV4 to the standard position. (mechanical center)
2. Check whether operation noise (while noise type) caused by
1. Set RV4 to the standard position. (mechanical center)
2. Check whether operation noise (while noise type) caused by
the 2-axis device (lens section of the optical pick-up) is
abnormally loud.
If the operation noise is too loud, turn RV4 slightly counter-
clockwise.
abnormally loud.
If the operation noise is too loud, turn RV4 slightly counter-
clockwise.
•
If the gain is too low:
Focus does not function and no music is selected.
Focus does not function and no music is selected.
•
If the gain is too high:
Noise caused by scratches and dust is heard and the operation
becomes unstable.
Noise caused by scratches and dust is heard and the operation
becomes unstable.
Adjustment Location: servo board
Adjustment Location: servo board (component side)
Procedure:
1. Connect an oscilloscope between TP (RF) and TP (RF. GND)
1. Connect an oscilloscope between TP (RF) and TP (RF. GND)
on the SERVO board.
2. Connect the power supply.
3. Push the RESET button (S900) on the MAIN board.
4. Insert the disc (YEDS-18) and playback.
5. Adjust RV1 so that the oscilloscope waveform is clear and check
3. Push the RESET button (S900) on the MAIN board.
4. Insert the disc (YEDS-18) and playback.
5. Adjust RV1 so that the oscilloscope waveform is clear and check
RF signal level is correct or not.
Note: Clear RF signal waveform means that the sharp “ ” can be
clearly distinguished at the center of the waveform.
• When observing the eye pattern, set the oscilloscope to AC range
and raise the vertical sensitivity so that it may be easily seen.
Adjustment Location: servo board
SECTION 3
ELECTRICAL ADJUSTMENTS
11
11
4-1. IC PIN DESCRIPTION
• IC801
µ
PD17705GC-547-3B9 (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
NC
—
Not used. (Connect to ground in this set.)
2
IN_SW
I
Disc insertion detection input L: IN_SW
3
D_SW
I
DOWN switch detection input L: D_SW
4
SELF_SW
I
Disc self store detection input L: SELF_SW
5
L_SW
I
Sled limit switch detection input L: L_SW
6
LM_EJ
O
Loading motor control output (Eject direction)
7
LM_LD
O
Loading motor control output (Loading direction)
8
RY_ON
O
Relay control output
9, 10
NC
—
Not used. (Open)
11
BAND_SW
I
BAND select input 0: US
12 – 20
NC
—
Not used. (Open)
21
GND3
—
Ground
22
NC
—
Not used. (Open)
23
ADKI2
I
A/D key input 2
24
ADKI1
I
A/D key input 1
25
ROTCOM
I
Rotary commander shift key input
26
NC
—
Not used. (Open)
27
TEST_SW
I
Test mode initial setting detection input L: TEST_SW
28, 29
NC
—
Not used. (Open)
30
VDD2
—
Power supply pin (+5 V)
31
FMIN
I
PLL local oscillator frequency input
32
NC
—
Not used. (Open)
33
GND2
—
Ground
34
NC
—
Not used. (Open)
35
EO1
O
PLL error 1 output
36
TEST0
—
Connect to GND line.
37 – 40
NC
—
Not used. (Open)
41
ACC_IN
I
Accessory power detection input L: ACC_IN
42
SCOR
I
SCOR signal detection input
43
MUTE
O
Mute control output
44
LEVEL D
O
Level control output
45
NC
—
Not used. (Open)
46
PH2
I
Connect to +5 V line.
47
LEVEL 1
O
Volume control output
48, 49
NC
O
Not used. (Open)
50
EMPH_O
O
Emphasis control output
51
PW_ON
O
System power control output
52
LM_ON
O
Loading motor power control output
53
CD_ON
O
CD power control output
54
ILLON
O
Illumination power control output
55 – 57
NC
—
Not used. (Open)
58
LCD_CE
O
LCD chip enable output
59
EZ_SEL
I
Rotary commander shift key input L: EZ_SEL
60
SENS
I
CD SENS signal detection input
61
FOK
I
Focus OK signal detection input
62
LD_ON
O
Laser ON/OFF control output L: LD_ON
63, 64
NC
—
Not used. (Open)
65
LCD_CLK
O
LCD serial clock output
66
LCD_DAT
O
LCD serial data output
67
LCD_INH
O
LCD inhibition output L: LCD_INH
68
SQCK0
O
Sub Q read clock output
SECTION 4
DIAGRAMS
Pin No.
Pin Name
I/O
Pin Description
69
CD_RST
O
Reset output to CD signal processor IC.
70
SQ_SI
I
Sub Q data input
71
CD_SO0
O
CD signal serial data output
72
CD_LAT
O
CD signal processing data latch output
73
CD_CK0
O
CD signal processing serial clock output
74
NC
—
Not used. (Open)
75
GND1
—
Ground
76
XOUT
O
ceramic oscillator output (4.5 MHz)
77
XIN
I
ceramic oscillator input (4.5 MHz)
78
BU_IN
I
Backup power detection input
79
VDD1
—
Power supply pin (+5 V)
80
RESET
I
Reset input L: RESET
12
12
35
31
36
39
38
PD1
RF
CLKO
XLTO
DATO
SEIN
FOK
CNIN
RF 0
21
PCMD
22
BCK
20
LRCK
34
XTAI
19
CLK
20
XLT
21
DATA
24
SENS
25
FOK
23
14
DIN
59
57
56
54
1
55
C. OUT
37
FE BIAS
22
50
XRST
16
SL O
6
FE O
13
TA O
PD2
E
F
1 FEO
2 FEI
34 PD
33 LD
XRST
MDP
RF AMP, SERVO CONTROL
IC2
OPTICAL PICK-UP
KSS-521A
DIGITAL SIGNAL PROCESSOR
IC1
D/A CONVERTER
IC701
FOCUS
GAIN
RV4
FOCUS
BIAS
RV1
LD POWER
CONTROL
Q1, 2
PD
LD
FOCUS/TRACKING COIL DRIVE,
MOTOR DRIVE
IC3
CH2 IN
LEVEL
SHIFT
22
16
15
TRACKING
CH1 IN
LEVEL
SHIFT
19
18
17
FOCUS
M902
(SLED)
CH2+
CH2–
CH1+
CH1–
CH3 IN
LEVEL
SHIFT
24
13
14
CH3+
CH3–
M
M901
(SPINDLE)
CH4 IN
LEVEL
SHIFT
3
CTL2 5
12
CH4+
M
M903
(LOADING)
FWD
LEVEL
SHIFT
6
REV
7
10
CH5+
M
49
SENS
46
SQSO
47
SQCK
51
DATA
52
XLAT
53
CLOK
43
SCOR
5
BCKIN
6
LRCIN
4
CLKO
19
XTI
1
XTO
20
RSTB
15
12
VOUTL
9
VOUTR
17
MC/DM1
X701
16.9344MHz
3
SCOR
CD_CK0
CD_LAT
CD_SO0
SQCK0
SQ_SI
SENS
CD_RST
FOK
LD_ON
LM_EJ
LM_LD
L_SW
IN_SW
D_SW
SELF_SW
SW3
(LIMIT)
SW1
(DISC IN)
SW4
(DOWN)
SW2
(SELF)
61
62
42
5
2
3
4
73
72
71
68
70
60
69
EMPH_O
50
SYSTEM CONTROL
IC801 (1/3)
CD L-CH
CD R-CH
CD
SECTION
(2/2)
A
I-V
AMP
04
• Signal path
: CD
• R-ch : same as L-ch.
6
7
CDX-1000RF
4-2. BLOCK DIAGRAM — CD SECTION (1/2) —
(Page 13)
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