Buzzer Operation; Printer Initialization - Epson SQ-1170 Service Manual

Cover open
The printer lid is opened.
Fatal errors
In the following cases, the printer recognizes them as fatal errors and enters the fatal error mode. The
fatal error condition cannot be recovered until turning the power off.
Carriage does not move correctly
Control circuit cannot work correctly
When the error condition is detected, the printer automatically enters 'PAUSE' mode and outputs
appropriate interface signal.
When parallel interface is selected, the following interface signals are outputted to indicate the error
and to stop data transmission.
BUSY signal becomes HIGH
ERROR signal becomes LOW
Output no ACKNLG pulse
PE signal becomes HIGH (only paper out error)

1.6.5 Buzzer Operation

The buzzer sounds under the following conditions:
A paper-out error is detected (beeps 3 times for 0.1 second respectively, with 0.1 second intervals).
Ink end error is detected (beeps 5 times for 0.1 second respectively, with 0.1 second intervals).
Cover open error is detected (beeps 5 times for 0.1 second respectively, with 0.1 second intervals).
Fatal error is detected (beeps 5 times for 0.5 second respectively, with 0.5 second intervals).
When panel setting is accepted (beeps 1 time for 0.1 second).

1.6.6 Printer Initialization

There are three initialization methods: hardware initialization, software initialization, and panel
initialization.
(1) Hardware initialization
This type of initialization takes place when the printer power button is turned on with the AC power
cord plugged in or when the INIT signal is received.
When the printer is initialized, it performs the following actions:
(a) Initialize printer mechanism.
(b) Clears input data buffer.
(c) Clears downloaded character set.
(d) Clears print buffer.
(e) Returns printer settings to their default values.
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