Power Supply And Battery - HP PageWriter XL M1705B Service Manual

Table 6-2. Power Supply and Battery
iymptom
Cause
Corrective Action
Aessage: No battery. Load
Battery not installed.
Install the battery, then try turning on
battery. Cardiograph won't
the cardiograph.
urn on.
1ne or more power supply
Defective regulator circuit(s).
Replace CPU assembly.
roltages missing (see "Testing
he Power Supply" at the end
If this chapter).
LC indicator not lit.
Power cord unplugged.
Plug in power cord.
AC switch is off.
Turn on AC switch.
AC fuse is blown.
Replace AC fuse.
ACON connector not plugged in.
Plug in ACON connector.
Bad user interface cable.
Replace cable.
Bad keyboarcl circuit board.
Replace user interface assembly.
VMAIN connector (J6) not plugged
Plug in VMAIN connector.
in on CPU assembly.
VBACK or VBAT regulator
Replace CPU assembly.
defective.
VMAIN or VIN not present.
Check for VMAIN and VIN on CPU
assembly (see "Testing the Power
Supply" at the end of this chapter). If
only VIN missing, replace CPU
assembly. If both missing, replace
rectifier assembly.
Cardiograph doesn't run on
sattery, but runs on AC.
Low battery or defective battery.
Battery fuse (F2) is blown.
Battery charger is defective.
Battery switch is defective.
Charge or replace battery.
Check for VBAT and VBAT+ on CPU
assembly. Replace fuse if VBAT is not
present.
Replace CPU assembly.
Check for VIN when the [On-Standbd
key is pressed. Replace CPU assembly
if VIN is not present.
Troubleshooting 6-9