SERVICE CALL CONDITIONS
B234/B235/B236/D101/D102/D103 4-114 SM
PSU LED Display
Four converters are built into PSU-E. Each converter is provided with one LED that
lights when the converter is activated.
PSU-E Converter LEDs
Converter LED Name
1st Converter 5V
2nd Converter 24V
3rd Converter 24VINT
4th Converter 38V
With the PSU box door open:
• LED 5V (1st Converter) and LED 24V (2nd Converter) are on PCB A on the right.
• LED 24VINT (3rd Converter) and LED 38V (4th Converter) are on PCB B on the
left.
You can see which system is operating abnormally by checking whether these
LEDs are on or off. If an LED is off, the converter for that LED is defective (see the
above table).
The table below shows what will interrupt the output from a converter.
Converter On/Off States According to Mode
Converter Output
Name
Copy
Standby
Door
Open
Energy
Saver
Low
Power
Off/
Sleep
VccE ON ON ON ON ON ON Energy Save
VcaE ON ON ON ON ON ON
VccL ON ON ON ON ON OFF 1st
Vcc ON ON ON ON OFF OFF
Vaa1 ON ON ON ON OFF OFF
Vaa2 ON ON ON ON OFF OFF
2nd
Vaa3 ON ON ON ON OFF OFF
Vaa4 ON ON OFF OFF OFF OFF 3rd
Vaa5 ON ON OFF OFF OFF OFF
Vmm1 ON ON ON OFF OFF OFF 4th
Vmm2 ON ON ON OFF OFF OFF
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