■ Failure Detection
Failure Point
Error Code
Cause of Failure
Main Motor
E014
In the case that the speed of motor does not
reach the specified speed after the specified
time has passed since the startup of the
Main Motor.
Main Fan
E805
In the case that the fan has been locked
continuously for the specified period of time
since the startup of the Main Fan Motor.
Low-voltage Power Supply
■ Outline
The low-voltage power supply converts AC power from the power receptacle into DC power to cover the DC loads.
Block diagram of the Low Voltage Power Supply is shown below.
PWSV
+5V
+3.3V
+24V
+24U
DOOR
SNS
SWON
Noise
filter
FET
+24P1
Fuse (FU102)
Door switch
(SW301)
Power switch
(SW1001)
+24V generation
circuit
DC controller
Low-voltage power supply
Engine controller
Fixing
control
circuit
Fixing unit
+5V
generation
circuit
+3.3V
generation
circuit
High-voltage
power supply
Noise filter
Protection
circuit
Fuse
(FU101)
■ Protective function
The low-voltage power supply has a protective function against overcurrent and overvoltage to prevent failures in the power
supply circuit. If there flows an overcurrent or an overvoltage, the system automatically cuts off the output voltage.
If the DC power is not being supplied from the low-voltage power supply, the protective function may be running. In such case,
turn off the power switch and unplug the power cord. Do not plug in the power cord or turn the power switch on again until the
root cause is found.
In addition, two fuses in the low-voltage power supply protect against overcurrent.
If overcurrent lows into the AC line, the fuse blows and cuts off the power distribution.
2. Technology
32
Содержание LBP253 SM
Страница 1: ...Revision 1 0 LBP253 SM ...
Страница 11: ...Product Overview 1 Product Lineups 5 Features 6 Product Specifications 7 List of Parts 10 Operation 12 ...
Страница 69: ...Periodical Service 3 Periodically Replaced Parts 63 Consumable Parts 64 Periodical Service 65 Cleaning 66 ...
Страница 109: ...3 Press Release Button and open Front Cover Unit 1 Remove Multi purpose Separation Pad 2 2 1 4 Disassembly Assembly 102 ...
Страница 110: ...Troubleshooting 5 Trouble Shooting 104 Version Upgrade 108 Corrective Actions 114 Debug Log 120 ...
Страница 117: ...4 Click Next button 5 Select USB Device and click Next button 5 Troubleshooting 110 ...
Страница 118: ...6 Click Start button 7 Click Yes button for the warning message to start download Start download 5 Troubleshooting 111 ...
Страница 129: ...Error Jam Alarm 6 Error Codes 123 ...
Страница 135: ...Service Mode 7 Service Mode 129 ...