Read Sony HCD-WZ7AV Service Manual online
42
HCD-WZ7AV
Pin No.
Pin Name
I/O
Description
154, 155
NC
—
Not used
156
AVD0
—
Analog power supply terminal (+2.5V)
157
IGEN
I
Operational amplifier constant current input
158
AVS0
—
Analog ground terminal
159
ADIO
O
Output terminal for the test Not used
160
RFDC
I
RF signal input from the RF amplifier
161
CE
I
Center servo analog signal input
162
TE
I
Tracking error signal input from the RF amplifier
163
SE
I
Sled error signal input from the RF amplifier
164
FE
I
Focus error signal input from the RF amplifier
165
VC
I
Center voltage (+1.65V) input terminal
166
VPCO
O
Wide-band EFM PLL charge pump output
167
VCTL
I
Wide-band EFM PLL VCO2 control voltage input
168
FILO
O
Master PLL filter output
169
FILI
I
Master PLL filter input
170
PCO
O
Master PLL charge pump output
171
CLTV
I
Multiplier VCO1 control voltage input
172
AVS1
—
Analog ground terminal
173
RFAC
I
EFM signal input from the RF amplifier
174
BIAS
I
Asymmetry circuit constant current input
175
ASYI
I
Asymmetry comparator voltage input
176
ASYO
O
EFM full-swing output
177
AVD1
—
Analog power supply terminal (+2.5V)
178
VDD7
—
Digital power supply terminal (+2.5V) (for CD-DSP block)
179
SOUT
O
Serial data output terminal Not used
180
SOCK
O
Serial data readout clock signal output terminal Not used
181
XOLT
O
Serial data latch pulse signal output terminal Not used
182
C4M
O
4.2336 MHz clock signal output terminal Not used
183
LOCK
O
GFS is sampled by 460 Hz “H” output when GFS is “H” Not used
184
VSS7
—
Digital ground terminal
185
MD2
I
Digital out on/off control signal input terminal “L”: digital out off, “H”: digital out on
Not used
Not used
186
SCSY
I
Guard subcode sync (S0+S1) resynchronization input terminal Not used
187
PWMI
I
Spindle motor external control signal input terminal Not used
188
VDD8
—
Digital power supply terminal (+2.5V) (for CD-DSP block)
189
XTSL
I
Input terminal for the system clock frequency setting
“L”: 16.9344 MHz, “H”: 33.8688MHz
“L”: 16.9344 MHz, “H”: 33.8688MHz
190
VSS8
—
Digital ground terminal
191
PVS2
—
Analog ground terminal (for PLL2)
192
LPFI
I
Connected terminal of PLL2 filter
193
LPFO
O
Connected terminal of PLL2 filter
194
PVD2
—
Analog power supply terminal (+2.5V) (for PLL2)
195, 196
RESERVE
—
Not used
197
PVD1
—
Analog power supply terminal (+2.5V) (for PLL1)
198
PVS1
—
Analog ground terminal (for PLL1)
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