Epson DM-M820, Техническое справочное руководство

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8-24 Troubleshooting Rev. I
5. Measure the voltage between each terminal on the 20-pin connector and the voltage of
all drive connectors. If the voltage differs from that shown on the chart below, replace
the power supply.
* Voltage range when electric current of 1A and more is consumed.
Power supply voltage check
Voltage system Measurement terminals Normal voltage
+3.3 V system Pin 1 – pin 15 + 3.14 ~ + 3.47 V
Pin 2 – pin 15
Pin 11 – pin 15
+5 V system Pin 4 – pin 15 + 4.75 ~ + 5.25 V*
Pin 6 – pin 15
Pin 19 – pin 15
Pin 20 – pin 15
+5 VSB system Pin 9 – pin 15 + 4.75 ~ + 5.25 V
+12 V system Pin 10 – pin 15 + 11.4 ~ + 12.6 V
–12 V system Pin 12 – pin 15 – 10.8 ~ – 13.2 V
+24 V system
1
11
10
20
20-pin connector
HDD End of Power Cable
COM Port Circuit Board End of Power Cable
FDD and CD-ROM End of Power Cable
Black(GND)
12V)
Black(+24V)
White(GND)