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6-30. 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
: Tracking zero-cross
BALH : E-F Balance (High)
TGH
: Tracking Gain (High)
FOH
: Focus Bias (High)
ATSC : Auti Shock
MIRR : Mirror
BALL : E-F Balance (Low)
TGL
: Tracking Gain (LOW)
FOL
: Foucas Bias (LOW)
Содержание HCD-XB88AVK
Страница 4: ... 4 Front Panel 1 7 8 9 º ª 2 3 4 6 º ª º ª º º º ª 5 SECTION 1 GENERAL ª ...
Страница 29: ... 41 42 6 10 SCHEMATIC DIAGRAM MAIN 3 5 SECTION See page 35 for Printed Wiring Board HCD XB88AVK XB88K ...
Страница 30: ... 43 44 6 11 SCHEMATIC DIAGRAM MAIN 4 5 SECTION See page 35 for Printed Wiring Board HCD XB88AVK XB88K ...
Страница 33: ... 49 50 6 14 SCHEMATIC DIAGRAM DECK SECTION See page 81 for IC Block Diagrams HCD XB88AVK XB88K Page 45 Page 45 ...
Страница 35: ... 53 54 6 16 SCHEMATIC DIAGRAM POWER SECTION See page 81 for IC Block Diagrams HCD XB88AVK XB88K ...
Страница 39: ... 61 62 6 20 SCHEMATIC DIAGRAM TC CD PANEL 1 SECTION HCD XB88AVK XB88K Page 55 Page 55 ...
Страница 40: ... 63 64 HCD XB88AVK XB88K 6 21 SCHEMATIC DIAGRAM HP MIC SECTION See page 81 for IC Block Diagrams ...
Страница 43: ... 69 70 6 24 SCHEMATIC DIAGRAM CD MOTOR SECTION See page 81 for IC Block Diagrams HCD XB88AVK XB88K Page 40 ...
Страница 44: ... 71 72 6 25 PRINTED WIRING BOARD TRANS SECTION See page 16 for Circuit Boards Location HCD XB88AVK XB88K ...
Страница 45: ... 73 74 6 26 SCHEMATIC DIAGRAM TRANS SECTION HCD XB88AVK XB88K ...
