4-84
Phaser 6180MFP Multifunction Printer Service Manual
General Troubleshooting
DC Power Supply Troubleshooting
LVPS Overcurrent Protection Circuit
This circuit stops all outputs if any of the Low Voltage Power Supply voltages
3.3 VDC, 5 VDC, or 24 VDC are shorted.
The circuit is reset when the short is removed, the power is turned Off, and
then On again.
LVPS Overvoltage Protection Circuit
This circuit stops all outputs if the power supply voltage 3.3 VDC, 5 VDC, or
24 VDC exceeds the specified voltage respectively. The operating point is 32
VDC or less for 24 VDC, 7 VDC or less for 5 VDC, or 4.4 VDC for 3.3 VDC.
The circuit is reset when the power is turned Off, and then On again after a
certain time.
LVPS
Troubleshooting Reference Table
Applicable Parts
Wiring and Plug/Jack Map References
■
LVPS, PL9.2.13
■
LVPS Harness, PL10.1.3
■
“Map 4 - LVPS and MCU Board” on
page 10-13
■
“DC Power Supply” on page 10-24
Troubleshooting Procedure Table
Step
Actions and Questions
Yes
No
1
1. Perform the AC power supply
troubleshooting procedure (page 4-83).
2. Does the problem persist?
Go to step 2.
Complete.
2
1. Turn the AC power switch Off.
2. Is the Fuse on the low-voltage power
supply board open?
Replace the
LVPS
(page 8-83).
Go to step 3.
3
1. Disconnect the wiring harness
connectors J501 and J502 from the
LVPS.
2. Turn the AC power switch On.
3. Verify the DC voltages between the
following pins on the LVPS:
■
P501-1 <=> P501-2 = +5 V
■
P501-3 <=> P501-4 = +3.3 V
■
P502-1 <=> P501-2 = +24 V
Go to step 4.
Replace the
LVPS
(page 8-83).
Summary of Contents for Phaser 6180MFP
Page 1: ...Service Manual Phaser 6180MFP 701P47020 Multifunction Printer ...
Page 2: ......
Page 20: ...xviii Phaser 6180MFP Multifunction Printer Service Manual ...
Page 32: ...xxx Phaser 6180MFP Multifunction Printer Service Manual ...
Page 82: ...1 50 Phaser 6180MFP Multifunction Printer Service Manual General Information ...
Page 188: ...2 106 Phaser 6180MFP Multifunction Printer Service Manual Theory of Operation ...
Page 412: ...3 224 Phaser 6180MFP Multifunction Printer Service Manual Error Messages and Codes ...
Page 526: ...4 114 Phaser 6180MFP Multifunction Printer Service Manual General Troubleshooting ...
Page 596: ...5 70 Phaser 6180MFP Multifunction Printer Service Manual Print Quality Troubleshooting ...
Page 618: ...7 8 Phaser 6180MFP Multifunction Printer Service Manual Cleaning and Maintenance ...
Page 748: ...8 130 Phaser 6180MFP Multifunction Printer Service Manual Service Parts Disassembly ...
Page 798: ...9 50 Phaser 6180MFP Multifunction Printer Service Manual Parts List ...
Page 870: ...A 18 Phaser 6180MFP Multifunction Printer Service Manual Reference ...
Page 882: ...I 12 Phaser 6180MFP Multifunction Printer Service Manual Index ...
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Page 884: ...701P47020 ...