Sony CDP-XE220 / CDP-XE320 Service Manual ▷ View online
– 17 –
– 18 –
CDP-XE220/XE320
6-5. SCHEMATIC DIAGRAM – MAIN SECTION –
• See page 31 for IC Block Diagrams.
(Page 14)
(Page 21)
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– 20 –
CDP-XE220/XE320
6-6. PRINTED WIRING BOARD – PANEL SECTION –
• See page 10 for Circuit Boards Location.
• Indication of transistor
C
These are omitted
E
B
(Page 15)
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– 22 –
CDP-XE220/XE320
6-7. SCHEMATIC DIAGRAM – PANEL SECTION –
• See page 10 for Waveforms.
• See page 28 for IC Pin Functions.
• See page 28 for IC Pin Functions.
(Page 18)
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– 24 –
6-8. IC PIN FUNCTIONS
• IC101 FOCUS/TRACKING/SLED SERVO RF AMP (CXA1992AR)
Pin No.
Pin Name
I/O
Function
FEO
FEI
FDFCT
FGD
FLB
FE O
FE M
SRCH
TGU
TG2
FSET
TA M
TA O
SL P
SL M
SL O
ISET
V
CC
LOCK
CLK
XLT
DATA
XRST
C.OUT
SENS1
SENS2
FOK
CC2
CC1
CB
CP
RF I
RF O
O
I
I
I
I
O
I
I
I
I
I
I
O
I
I
O
I
I
I
I
I
I
I
O
O
O
O
I
O
I
I
I
O
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
Focus error amplifier output
Connected internally to the window comparator input for bias adjustment
Focus error input
Capacitor connection pin for defect time constant
Ground this pin through a capacitor for cutting the focus servo high-frequency gain
External time constant setting pin for boosting the focus servo low-frequency
Focus drive output
Focus amplifier inverted input
External time constant setting pin for generating focus search waveform
External time constant setting pin for switching tracking high-frequency gain
External time constant setting pin for switching tracking high-frequency gain
Peak frequency setting pin for focus and tracking phase compensation amplifier
Tracking amplifier inverted input
Tracking drive output
Sled amplifier non-inverted input
Sled amplifier inverted input
Sled drive output
Connect an external capacitance to set the current which determines the Focus search,
Track jump, and Sled kick heights
Positive power supply
The sled overrun prevention circuit operates when this pin is Low (No pull-up resistance)
Serial data transfer clock input from CPU (No pull-up resistance)
Lach input from CPU (No pull-up resistance)
Serial data input from CPU (No pull-up resistance)
Reset input; resets at Low (No pull-up resistance)
Track number count signal output
Outputs FZC, DFCT1, TZC, BALH, TGH, FOH, ATSC, and others according to the com-
mand from CPU
Outputs DFCT2, MIRR, BALL, TGL, FOL,and others according to the command from
CPU
Focus OK comparator output
Input for the defect bottom hold output with capacitance coupled
Defect bottom hold output
Connected internally to the interruption comparator input
Connection pin for defect bottom hold capacitor
Connection pin for MIRR hold capacitor
MIRR comparator non-inverted input
Input for the RF summing amplifier output with capacitance coupled
RF summing amplifier output
Eye-pattern check point
• Abbreviation
FZC
: Focus zero-cross
DFCT : Defect
TZC
TZC
: Tracking zero-cross
BALH : E-F Balance (High)
TGH : Tracking Gain (High)
FOH : Focus Bias (High)
TGH : Tracking Gain (High)
FOH : Focus Bias (High)
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
Pin No.
Pin Name
I/O
Function
RF M
RFTC
LD
PD
PD1
PD2
FE BIAS
F
E
EI
V
EE
TEO
LPFI
TEI
ATSC
TZC
TDFCT
VC
FZC
I
I
O
I
I
I
I
I
I
–
–
O
I
I
I
I
I
O
I
RF summing amplifier inverted input
The RF amplifier gain is determined by the resistance connected between this pin and
RFO pin
External time constant setting pin during RF level control
APC amplifier output
APC amplifier input
RF I-V amplifier inverted input
Connect these pins to the photo diode A+C and B+D pins
Bias adjustment of focus error amplifier
Leave this pin open for automatic adjustment
F I-V and E I-V amplifier inverted input
Connect these pins to photo diodes F and E
I-V amplifier E gain adjustment
(When not using automatic balance adjustment)
Negative power supply
Tracking error amplifier output
E-F signal is output
Comparator input for balance adjustment
(Input from TEO through LPF)
Tracking error input
Window comparator input for ATSC detection
Trackig zero-cross comparator input
Capacitor connection pin for defect time constant
(V
CC
+ V
EE
)/2 direct voltage output
Focus zero-cross comparator input
• Abbreviation
APC : Auto Power Control
ATSC : Anti Shock
MIRR : Mirror
BALL : E-F Balance (Low)
TGL : Tracking Gain (Low)
FOL
MIRR : Mirror
BALL : E-F Balance (Low)
TGL : Tracking Gain (Low)
FOL
: Focus Bias (Low)
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