Kodak DryView 8150 Service Manual page 417

8-5-66. 27-602: Invalid POWER MONITOR Range with ATTENUATOR Open
LOCAL PANEL Message
Calibration Failed: Optics:--
Alarm sounds
Summary
Optics calibration and diagnostics detected that a POWER MONITOR reading with the ATTENUATOR
wide open was outside the predefined valid range. The measured laser power is either too high or too
low. Optics calibration and diagnostics are performed at power up and before every calibration print.
During this process the ATTENUATOR is calibrated and laser power is checked and calibrated. At the
beginning of the sequence, the POWER MONITOR offset value is measured, and then the range of the
POWER MONITOR is checked with the ATTENUATOR wide open (no attenuation). (POWER MONITOR
offset is subtracted from this value.) If the range value is outside set limits, error 27-602 is declared.
Result of Error
The IMAGER is unable to print film. It can accept and queue new jobs, but it will not initiate new films.
Films downstream from the PLATEN will be completed. All other films will be reprinted. The error can be
cleared by requesting another calibration or by restarting the IMAGER.
User Action
1. Restart the IMAGER.
2. If the error persists, call Service.
FE Action
This error can be the result of any of the following problems (listed in most likely order of occurrence):
-- Open or failed interlock (or SERVICE OVERRIDE SWITCH set in Service position)
-- Failed OPTICS MODULE
-- Loss of +12 vdc power
-- Failed MCS BOARD (controls OPTICS MODULE circuits)
-- Miswired or damaged SERVICE SWITCH (This problem is rare but can occur in the field if a
SWITCH is replaced. Suspect it if the error occurs immediately after replacing the SERVICE
SWITCH.)
1. Check the MCS and GSM logs for indications of the error.
2. The acceptable range for the "powerMonitorAttenopen" value is 2492 to 3950. A value outside this
range will generate 27--602.
a. If the value is grossly outside the acceptable range, suspect an INTERLOCK problem. To confirm
this, check the MCS log for indications of "Door open without CARTRIDGE closed."
b. If the value is barely outside the range, suspect the OPTICS MODULE. (Examples of problems
that have resulted in this error are: COLLIMATOR LENS adhesive failure and L2 LENS failure. )
Check the Optics Laser Adjustment, Procedure 3-7.
3. POWER SUPPLY problems can also cause a failure. Check for +12 vdc on the pads on the left center
of the MCS BOARD (just above the VCC1 test points). For ground, use GND1.
2005 July Rev. B 7F3318
Log Message
Optics calibration failed. Power
Monitor value with Atten open
outside valid range.
Section 8 - - QuickSheets
DICOM Message Severity
ELEC DOWN 0--Fatal
8-75