Read Sony CDP-CX57 Service Manual online
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Pin No.
Pin Name
I/O
Function
40
CV+
I
CLV error signal input from the DSP (IC102)
41
RFSM
O
Playback EFM RF signal output to the DSP (IC102)
42
RFS–
I
Works together with the RFSM (pin $¡) to set the RF gain and the 3T compensation constant for
the EFM RF signal
the EFM RF signal
43
SLC
O
SLI (Slice Level Control) is output to control a data slice level of the RF waveform by the DSP
(IC102)
(IC102)
44
SLI
I
Input terminal for controlling a data slice level by the DSP (IC102)
45
DGND
—
Ground terminal (digital system)
46
FSC
O
Focus search smoothing capacitor output terminal
47
TBC
I
TBC (Tracking Balance Control) sets a EF balance variable range
48
NC
—
Not used (open)
49
DEF
O
Defect detection signal output to the DSP (IC102)
50
CLK
I
Reference clock (4.2336 MHz) input from the DSP (IC102)
51
CL
I
Command serial clock signal input from the system controller (IC501)
52
DAT
I
Command serial data input from the system controller (IC501)
53
CE
I
Command chip enable signal input from the system controller (IC501)
54
DRF
O
Focus OK signal output to the system controller (IC501) “L”: NG, “H”: OK
55
FSS
I
FSS (Focus Search Select) is a switching terminal for the focus search mode (
±
search/+search for
a reference voltage) Not used (open)
56
VCC2
—
Power supply terminal (+5V) (servo system and digital system)
57
REFI
I
Connected to the coupling capacitor for the reference voltage (+2.5V)
58
VR
O
Reference voltage (+2.5V) output terminal
59
LF2
I
Constant setting for a disc defect detection
60
PH1
I
Connected to the capacitor for the RF signal peak hold
61
BH1
I
Connected to the capacitor for the RF signal bottom hold
62
LDD
O
Laser drive signal output to the automatic power control circuit
63
LDS
I
Light amount monitor input of the laser diode (PD)
64
VCC1
—
Power supply terminal (+5V) (RF system)
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