dynabook TECRA A40-J Series Maintenance Manual

Maintenance Manual (960-945) 2-8
Troubleshooting Procedures
2.3.3 Procedure 3 Connection Check
The wiring diagram related to the power supply is shown below:
DC adapter over rating 14h Dock AC adapter voltage >
DC-In normal voltage upper limit
Output error at power start
of E system power supply
20h During power on sequence,
Waiting for PCNFEV signal assertion
1s timeout occurred
Steady-state output error
at power on of E system
power supply
21h At power on steady time,
PCNFEV signal deassertion
Steady-state output error
at power off of E system
power supply (No output)
22h Power off steady state &
When the PCNFEV signal is deasserted with the EVON
signal asserted
Steady-state output error
at power off of E system
power supply (With
output)
23h Power off steady state &
When the PCNFEV signal is asserted with the EVON
signal deasserted
Output error at startup of
system B power supply
30h 1s timeout occurs while waiting for PCNFBV signal
assertion during power on sequence.
B system power supply
ON steady output error
31h PCNFBV signal deassertion at power on steady state.
B system power supply
OFF steady output error
(No output)
32h Power off steady state &
PCNFBV signal deasserted when BVON signal is
asserted
B system power supply
OFF steady output error
(With output)
33h Power off steady state &
PCNFBV signal asserted when BVON signal is
deasserted.
Output error at P system
and CPU system power
supply startup
40h 1s timeout waiting for PPVOK (PCNFPV) signal
assertion occurred during power on sequence.
P system and the CPU
system power supply On
the steady-state output
error
41h At power on steady time,
PPVOK(PCNFPV) signal deassertion
P system and the CPU
system power supply Off
the steady-state output
error (With output)
43h At power off steady time,
PPVOK(PCNFPV) signal assertion.
Output error at other P
system power supply
start-up
50h 1s timeout waiting for OPGOOD signal assertion
occurred during power on sequence
Other P system power
supply On steady-state
output error
51h OPGOOD signal deasserted at power on steady state.
Other P system power
supply off steady-state
output error (with output)
53h OPGOOD signal asserted at power off steady state

dynabook TECRA A40-J Series Specifications

General

Brand	dynabook
Model	TECRA A40-J Series
Category	Laptop
Language	English