Sony Walkman MZ-N910 Service Manual page 52

MZ-N910
Pin No. Pin Name
109 NC
110 NC
111 BATT_CTL
112 VREC_CTL
113 XRST_CHG_IC
114, 115 PD_S0, 1
116 LINK_MON
117 NC
118 NC
119, 120 NC
121 SLD_MON
122 VLON(NC)
123 SLEEP
124 FFCLR
125 CHGI_CTL1
126 CHGI_CTL2
127 NC
128 CHG_LED
129 XTEST
130 XRF_RST
131 XEXT_PWR
132 XHOLD_SW
133 COUT_MON
134 CHG_ADSEL
135 CHGI_SEL
136 XDC_IN
137 SPDL_MON
138 XCS_PWR_IC
139, 140 NC
141 XCS_LCD
142 LCD_STB
143 XRST_MTR_DRV
144 XCS_NV
145 CHG_PWM
146 VREC_PWM
147 NC
148 NC
149 NC
150 XCS_REC_DRV
151 T_MARK _SW
152 JOG_A
153 JOG_B
154, 155 NC
156 SSB_DATA
157 SSB_CLK
158 VBUS_DET
159 VB_MON
160 CHG_MON
161 VREF_MON
162, 163 SET_KEY_1, 2
52
I/O
O Power supply control signal output for the OP modulation Not used (open)
O Power supply control signal output for the OP laser Not used (open)
O Control signal output for the voltage step up circuit in the external battery case Not used (open)
O VREC voltage control signal output Not used (open)
O Reset signal output to the battery charge control IC
O PD IC mode changeover signal output to the optical pick up
O Linking area monitor signal output Not used (open)
O Plunger control signal output Not used (open)
O Ground changeover switch control signal output Not used (open)
O Not used (open)
I Sled servo monitor signal input
O Not used (open)
O System sleep control signal output to the power control
O Input latch output for the start switching to the power control
O Charge current limit ON/OFF control signal output at the time of adaptor use
O Charge current limit value changeover control signal output at the time of adaptor use Not used (open)
O Orange LED ON/OFF control signal output Not used (open)
O LED ON/OFF control signal output for CHG (charge display)
I Terminal for the test mode setting (normally open) "L": test mode
O Reset control signal output to the RF amplifier "L": reset
I External power supply (AC adaptor/charging stand) detection signal input
I HOLD switch input terminal "L": hold ON
I Traverse count measurement monitor input
O A/D terminal of the battery charge contro IC output selection signal output
O Charge/discharge changeover control signal output for the current sense amplifier
I DC plug detection signal input
I Spindle servo monitor signal input
O Chip select signal output to the power control
O Control signal output for the D class headphone amplifier Not used (open)
O Chip select signal output to the liquid crystal display module
O Strobe signal output to the liquid crystal display module
O Reset control signal output to the motor driver "L": reset
O Chip select signal output to the nonvolatile memory
O Output voltage control signal output to the battery charge control
O PWM signal output for the power supply voltage control to the REC driver
O PWM signal output for the laser power supply voltage control to the power control Not used (open)
O Muting control signal to the headphone amplifier (NJM type made by JRC) Not used (open)
O Power supply control signal output for the D class headphone amplifier Not used (open)
O Chip select signal output to the REC driver Not used (open)
I T MARK (track mark) switch input terminal Not used (open)
I Jog dial pulse input from the switch & liquid crystal display module
I Jog dial pulse input from the switch & liquid crystal display module
O Not used (open)
I/O SSB data input/output with the RF amplifier
O SSB clock output to the RF amplifier
I USB power supply voltage detection terminal
I Voltage monitor input terminal (A/D input) of the UNREG power supply
I Decrement of voltage detection and charge/discharge current monitor input from the battery charge control
I Reference voltage monitor input (A/D input) from the RF amplifier
I Key input (A/D input) from the switch & liquid crystal display module
Description