Sony MZ-R50 - MD Walkman MiniDisc Recorder Service Manual page 36

Pin No. Pin name
56 AV
SS
57 PDO
58 PCO
59 FILI
60 FILO
61 CLTV
62 PEAK
63 BOTM
64 ABCD
65 FE
66 AUX1
67 VC
68 ADIO
69 AV
DD
70 ADRT
71 ADRB
72 AV
SS
73 SE
74 TE
75 AUX2
76 DCHG
77 APC
78 ADFG
79 FO CONT
80 XLRF
81 CKRF
82 DTRF
83 APCREF
84 LDDR
85 TRDR
86 TFDR
87 DV
DD
88 FFDR
89 FRDR
90 FS4
91 SRDR
92 SFDR
93 SPRD
94 SPFD
95 FGIN
96 TEST1
97 TEST2
98 TEST3
99 DV
SS
100 EFMO
I/O
– Ground terminal.
– Not used (Open).
O Decoder PLL master clock PLL phase comparison output.
I Decoder PLL master clock PLL filter input.
O Decoder PLL master clock PLL filter output.
I Decoder PLL master clock PLL VCO control voltage input.
I Inputs peak hold signal for light amount signal from RF amplifier (IC501).
I Inputs bottom hold signal for light amount signal from RF amplifier (IC501).
I Light amount signal from RF amplifier (IC501).
I Input focus error signal from RF amplifier (IC501).
I Input of auxiliary signal from RF amplifier (IC501).
I Input of middle point voltage (+1.4V) from RF amplifier (IC501).
– Not used (Open).
– Power supply (+2.8V) for analog.
– Not used (Connect to +2.8V).
– Not used (Ground).
– Ground terminal.
I Input of sled error signal from RF amplifier (IC501).
I Input of tracking error signal from RF amplifier (IC501).
– Not used (Connect to +2.8V).
– Not used (Connect to +2.8V).
– Not used (Connect to +2.8V).
Input of ADIP dual FM signal from RF amplifier (IC501) (22.05kHz±1kHz).
I
(TTL Schmidt input)
O Focus control output to RF amplifier (IC501).
I Latch signal input from RF amplifier (IC501).
O RFCK clock (7.35kHz) signal output.
I Serial data input from system controller (IC801).
I Laser power setting signal input.
– Not used (Open).
O Tracking servo drive signal output (–).
O Tracking servo drive signal output (+).
– Power supply (+2.8V) for digital.
O Focus servo drive signal output (+).
O Focus servo drive signal output (–).
O 176.4kHz clock signal output (MCLK).
O Sled servo drive signal output (–).
O Sled servo drive signal output (+).
O Spindle servo drive signal output (–).
O Spindle servo drive signal output (+).
I FG signal input from spindle motor driver (IC701).
– Not used (Connect to ground).
– Not used (Connect to ground).
– Not used (Connect to ground).
– Ground terminal.
O EFM recording signal ouput.
– 36 –
Description