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2.3
Power Supply Troubleshooting
The T4500/T4600 Family's power supply controls many functions and components. To determine
if the power supply is functioning properly, start with Procedure 1 and continue with the other
procedures as instructed. The procedures described in this section are:
Procedure 1: Power Status Check on the Status Indicator Panel
Procedure 2: Battery LED Indicator Check
Procedure 3: Battery Power Check
Procedure 4: System PCB Replacement Check
Procedure 1
Power Status Check on the Status Indicator Panel
The Status Indicator Panel displays the status of the following power-related items:
AC adapter or Desk Station IV connection status
System power-on status
Remaining battery power
If an error status is displayed on the Status Indicator Panel, perform Check 1. If the Battery LED
Indicator is flashing red or not glowing, go to Procedure 2. If the three icons listed above are not
displayed, go to Procedure 3.
NOTE: The power supply microprocessor monitors the status of the power supply. When it
detects an error, the error is displayed on the Status Indicator Panel.
Check 1:
Read the error status in the battery power indicator area on the Status Indicator Panel.
Table 2-1 Outline of Power Supply Error Status
Status
Source of Error
P0*
AC Adapter or Desk Station IV error
P1*
Battery error
P2*
VCC Output error
P3*
B3V Output error
P4*
12V Output or M12V Output error
P5*
Power Supply Microcomputer error
P6*
Power On error
P8*
Environment
2-5
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Troubleshooting
