Sony Walkman MZ-E300 Service Manual page 17

Pin No. Pin name I/O
46 CLV_W_CON O Spindle servo (W) drive signal output to SC111257FCR2 (IC551)
47 SLED_1R_CON O Sled motor control signal output to SC111257FCR2 (IC551)
48 SLED_1F_CON O Sled motor control signal output to SC111257FCR2 (IC551)
49 SLED_2R_CON O Sled motor control signal output to SC111257FCR2 (IC551)
50 SLED_2F_CON O Sled motor control signal output to SC111257FCR2 (IC551)
51 BEEP O Beep sound drive signal output to phones amplifier (IC301)
52 NV_XCS O Chip select signal output to EEPROM (IC802)
53 RMC_DTCK I/O TSB serial communication data input/output to/from remote commander with phones
54 SIO2_CLK O Serial clock signal output to LC89642-8B-E (IC601) and EEPROM (IC802)
55 SIO3_DI I Read data input from LC89642-8B-E (IC601) and EEPROM (IC802)
56 SIO3_DO O Write data output to LC89642-8B-E (IC601) and EEPROM (IC802)
57 DSP_VP I CLV servo lock decision signal input from LC89642-8B-E (IC601)
58 VL_VCON O PWM signal for VL voltage control signal to XPC18A32FCR2 (IC901) output
59 PWR_CLK O External sync. clock (176.4kHz) signal to XPC18A32FCR2 (IC901) output
60 SEG0 O LCD segment output
61 VSS — Ground (Digital system)
62-72 SEG1-11 O LCD segment output
73-76 COM0-3 O LCD common output
77-79 VL1, 2, LVDD I LCD drive level power supply input
80 VSS — Ground (Digital system)
Description
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MZ-E300