Product

Error

17686 LV: Not enough light for beam balance

Symptoms

Error 17686 is generated.

Cause

The shutter sensor may be faulty. There may be a problem with the diode.

Solution

1. Turn the laser on. Type >>laser on (MCE and MPE). Confirm that it is actually on: type >>laser (MCE and MPE).

   >> laser
*** State message: Head command (72)
Thermal head type: 40W
Write laser state: On
Laser mode: closed-loop,(original mode)
Monitor : Matched media 1 with HDM 1
Setpoint power: 9.25 W
Power: 9.24 W
Current: 23.55 A
Diode temp: 24.9 C
Laser on time: 789.40 hours

   The laser should be able to reach the setpoint (within about 0.20W). If it can not, error 17693 will display.

2. Obtain a reading from the shutter sensor: type >>head power sum (MCEand MPE)

   >> head power sum
*** State message: Head command (96)
Sum from all channels: 1.917W
Leakage power: 0.712W

3. If the actual laser value (Power) is significantly different from the setpoint value (Setpoint power), then you have a faulty shutter sensor that must be repalced. Complete the following:
   1. The device can temporarily operate with stroke calibration disabled. Type:
      • MPE: >>set sys tstk 0
      • MCE: set ehi tstk 0
      The customer can resume production until the shutter is replaced.
   2. Order the shutter replacement kit, part number 05-0165, and download the procedure: Thermal 1/1.7 Shutter Sensor Replacement Procedure.
   3. Once the shutter has been replaced, re-enable the automatic stroke calibration. Type:
      • MPE: >>set sys tstk 540
      • MCE: >>set ehi tstk 540

Note: In some cases, repalcing the shutter sensor may not fix the problem, therefore a replacement head should always be shipped to site along with the shutter kit. Only use the replacement head if the shutter kit does not solve the problem.

See also

Thermal 1/1.7 Shutter Sensor Replacement Procedure

Technical contact(s)

Jeff Edgar

Submitted by

Juan Valverde

Date submitted

03 Apr 2001