Fujitsu Impact 3650, Руководство по обслуживанию

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5.3.8 Alarms
5.3.8.1 Fire Check
A fire check alarm occurs if:
Abnormal current flows because of damage to the space, line feed, or tractor motor, or a motor driver.
The space motor has been excited for a long time.
Current flows to the head drive transistor for a period longer than specified.
5.3.8.2 ROM or RAM Error
A ROM or RAM error occurs if an error is detected during the following checks when power is turned on.
(1) ROM check
Check data is set for each ROM, and an add-up check is performed.
(2) RAM check
A RAM check is performed while writing 0 and 1 to every RAM address and reading them.
NVRAM (nonvolatile memory) check
Check data is set for each NVRAM, and an add-up check is performed.
5.3.8.3 Spacing Error
A space alarm occurs if a space error is detected during spacing operation.
A predetermined pulse signal is applied to the space motor but the left-end sensor shows no change.
（ The sensor freezes in detection state or detects nothing. ）
Printer column management is abnormal; the left-end sensor is detected at a place other than the left end or vice
versa.
5.3.8.4 APTC Gap Alarm
When the optional automatic paper thickness control mechanism is used, a gap alarm occurs if:
Paper is thicker than the specified value.
The APTC motor drive circuit is damaged and the motor does not rotate.
APTC retract operation does not work normally.
Paper thickness cannot be detected.
The mechanism keeps staying at the retract position when paper thickness detection is performed.
5.3.8.5 HCPP Alarm
An HCPP alarm occurs if:
An attempt to change the paper path failed.
The reference position cannot be detected during initial operation (at power-on).
The reference position cannot be detected during initial operation performed for continuous loading.
5.3.8.6 Skew Unit Error
A skew unit error occurs if:
(1) The paper feed roller cannot be positioned correctly.