Toshiba T-Series T2000sxe, User Manual

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2-9
Procedure 3: Replacement Check
Procedure 1
DC IN Indicator Check
1. When the T2000SXe AC adapter is connected to a live wall outlet and the T2000SXe, the
DC IN indicator will light red. If the AC adapter or the power supply is malfunctioning,
the DC IN indicator will flash red or does not light at all.
(1) If the DC IN indicator flashes red, refer to Check 1.
(2) If the DC IN indicator does not light, refer to Check 2.
Check 1 When a power supply problem occurs, the DC IN indicator will flash repeatedly
with a 4-bit status that varies depending on the problem.
The DC IN indicator is off for two seconds and then it lights for either ½ second
(indicating a binary 0) or one full second (indicating a binary 1). There is a ½-
second interval between bits, with bit 0 (zero) or the least significant bit first and
ending with bit 3 (three) or the most significant bit.
For example, the following timing chart shows a status of 5h (0101). The timing
chart below is read from right to left.
The status and its meaning are described in Table 2-1.
However, when the DC IN indicator blinks at random, the AC adapter or charging
circuit may be damaged. In this case, replace the AC adapter with a new one. If the
ON
DC IN
OFF
2s 1s 0.5s 1s 0.5s
0.5s 0.5s 0.5s
Time
Bit 0 Bit 1 Bit 2 Bit 3
1 0 1 0
UPDATE
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