Sony MZ-R91 Service Manual page 33

Pin No. Pin Name
103 XLRF
104 CKRF
105 DTRF
106 APCREF
107 LDDR
108 VDC4
109 TRDR
110 TFDR
111 FFDR
112 FRDR
113 FS4
114 SRDR
115 SFDR
116 VSC4
117 SPRD
118 SPFD
119 FGIN
120 to 122 TEST1 to TEST3
123 EFMO
124 SPVS
125 VDIO3
126 VSIO3
127 SPDU
128 SPDV
129 SPDW
130 SPCU
131 SPCV
132 SPCW
133 SLDU
134 SLDV
135 SLDW
136 VDC5
137 VSC5
138 SLCU
139 SLCV
140 SLCW
141 SLVS
142 BYPS
143 VSS
144 VDD
145 VSS
146 VDD
147 IVC
I/O
O Serial latch signal output terminal Not used (open)
O Serial clock signal output terminal Not used (open)
O Writing data output terminal Not used (open)
Control signal output to the reference voltage generator circuit for the laser automatic power
O
control
O PWM signal output for the laser automatic power control Not used (open)
—
Power supply terminal (+1.8V) (for internal logic)
O Tracking servo drive PWM signal (–) output to the MPC17A56FTA (IC601)
O Tracking servo drive PWM signal (+) output to the MPC17A56FTA (IC601)
O Focus servo drive PWM signal (+) output to the MPC17A56FTA (IC601)
O Focus servo drive PWM signal (–) output to the MPC17A56FTA (IC601)
O Clock signal (176.4 kHz) output to the MPC18A20MTAEL (IC603) (X' tal system)
O Sled servo drive PWM signal (–) output terminal Not used (open)
O Sled servo drive PWM signal (+) output terminal Not used (open)
—
Ground terminal (for internal logic)
O Spindle servo drive PWM signal (–) output terminal Not used (open)
O Spindle servo drive PWM signal (+) output terminal Not used (open)
I FG signal input terminal for spindle servo Not used (open)
I Input terminal for the test (normally : fixed at "L")
O EFM signal output when recording mode to the MPC18A20MTAEL (IC603)
O Spindle servo drive voltage control signal output to the MPC17A56FTA (IC601)
—
Power supply terminal (+2.4V) (for I/O)
—
Ground terminal (for I/O)
O Spindle servo (U) drive signal output to the MPC17A56FTA (IC601)
O Spindle servo (V) drive signal output to the MPC17A56FTA (IC601)
O Spindle servo (W) drive signal output to the MPC17A56FTA (IC601)
I Spindle servo (U) timing signal input from the MPC17A56FTA (IC601)
I Spindle servo (V) timing signal input from the MPC17A56FTA (IC601)
I Spindle servo (W) timing signal input from the MPC17A56FTA (IC601)
O Sled servo (1+) drive signal output to the MPC17A56FTA (IC601)
O Sled servo (1–) drive signal output to the MPC17A56FTA (IC601)
O Sled servo (2+) drive signal output to the MPC17A56FTA (IC601)
—
Power supply terminal (+1.8V) (for internal logic)
—
Ground terminal (for internal logic)
I Sled servo (1) timing signal input from the MPC17A56FTA (IC601)
I Sled servo (2) timing signal input from the MPC17A56FTA (IC601)
O Sled servo (2–) timing signal output to the MPC17A56FTA (IC601)
O Sled servo voltage control signal output to the MPC17A56FTA (IC601)
O By-pass transistor control signal output to the MPC17A56FTA (IC601)
—
Ground terminal (for internal 16M bit D-RAM)
— Power supply terminal (+2.4V) (for internal 16M bit D-RAM)
—
Ground terminal (for internal 16M bit D-RAM)
—
Power supply terminal (+2.4V) (for internal 16M bit D-RAM)
O Output terminal for the test Not used (open)
Description
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