Read Sharp CD-C3H (serv.man13) Service Manual online
CD-C3H/CP-C3H
– 54 –
1
DEFI
Input
Input terminal of defect detection signal (DEF). (Connected to OV when not used.)
2
TA1
Input
For PLL
Input terminal for test. Pull-down resistor is integrated. Surely connected to 0V.
3
PDO
Output
Output terminal of phase comparison for external VCO control.
4
VVSS
—
Ground terminal for integrated VCO. Surely connected to 0V.
5
ISET
Input
Resistance connection terminal for current adjustment of PDO output.
6
VVDD
—
Power terminal for integrated VCO.
7
FR
Input
VCO frequency range adjustment.
8
VSS
—
Ground terminal of digital system. Surely connected to 0V.
9
EFMO
Output
For slice level control
EFM signal output terminal.
10
EFMIN
Input
EFM signal input terminal.
11
TEST2
Input
Input terminal for test. Pull-down resistor is integrated. Surely connected to 0V.
12
CLV+
Outout
Output for disk motor control. 3 values can be output with the commands.
13
CLV-
Output
Output for disk motor control. 3 values can be output with the commands.
14
V/P
Output
Monitor output terminal for automatic switch of rough servo/phase control.
"H" for rough servo, and "L" for phase servo.
"H" for rough servo, and "L" for phase servo.
15
HFL
Intput
Input terminal of track detection signal. Schmit input.
16
TES
Input
Input terminal of tracking error signal. Schmit input.
17
TOFF
Output
Tracking OFF output terminal.
18
TGL
Output
Output terminal for switch of tracking gain "L" increases the gain.
19
JP+
Output
Output for track jump control. 3 values can be output with the commands.
20
JP-
Output
Output for track jump control. 3 values can be output with the commands.
21*
PCK
Output
Clock monitor terminal for EFM data replay. 4,3218MHz as the phase clock.
22*
FSEQ
Output
Output terminal synchronous signal detection. "H" is output when synchronous signal detected
by EFM signal matches synchronous signal internally generated.
by EFM signal matches synchronous signal internally generated.
23
VDD
—
Power terminal of digital system.
24
CONT1
Output
OPEN direction
25
CONT2
Output
CLOSE direction
26
CONT3
Output
Cam motor forward rotation
27
CONT4
Output
Cam motor reverse rotation
28
CONT5
Output
Cam motor speed selection High speed "L" Low speed "H"
29*
EMPH
Output
Difference monitor terminal At "H", deemphasis disk is being replayed.
30*
C2F
Output
C2 flag output terminal.
31
DOUT
Output
Output terminal of digital OUTPUT. (EIAJ format)
32*
TEST3
Input
Input terminal for test. Pull-down resistor is integrated. Surely connected to 0V.
33
TEST4
Input
Input terminal for test. Pull-down resistor is integrated. Surely connected to 0V.
34
PCCL
—
Terminal not use. Ground terminal.
35*
MUTEL
Output
L channel 1 bit DAC
Mute output terminal for L channel.
36
LVDD
—
Power terminal for L channel.
37
LCHO
Output
L channel output terminal.
38
LVSS
—
Ground terminal for L channel Surely connected to 0V.
39
RVSS
—
R channel 1 bit DAC
Ground terminal for R channel Surely connected to 0V.
40
RCHO
Output
R channel output terminal.
41
RVDD
—
Power terminal for R channel.
42*
MUTER
Output
Mute output terminal for R channel.
43
XVDD
—
Power terminal for quartz oscillation.
44
XOUT
Output
Ground terminal of 16.9344 MHz quartz oscillator.
45
XIN
Input
Ground terminal of 16.9344 MHz quartz oscillator.
46
XVSS
—
Ground terminal for quartz oscillation. Surely connected to 0V.
47*
SBSY
Output
Output terminal of synchronous signal of subcode block.
48*
EFLG
Output
Correction monitor terminal of C1, C2, single and double.
Pin No.
Function
Terminal Name Input/Output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
IC2 VHiLC78622K-1: Servo/Signal Control (LC78622K) (1/2)
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