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TELEDYNE API
M703E Calibrator Operator’s Manual General Troubleshooting & Repair of the M703E Calibrator
Table 11-1: Front Panel Warning Messages
WARNING FAULT CONDITION POSSIBLE CAUSES
CONFIG INITIALIZED
Configuration and
Calibration data reset to
original Factory state.
- Failed Disk on Chip
- User has erased configuration data
DATA INITIALIZED
Data Storage in iDAS was
erased.
- Failed Disk-on-Chip.
- User cleared data.
FRONT PANEL WARN
The CPU is unable to
Communicate with the
Front Panel Display
Keyboard
- WARNING only appears on Serial I/O COM Port(s)
- Front Panel Display will be frozen, blank or will not
respond.
- Failed Keyboard
- I
2
C Bus failure
- Loose Connector/Wiring
LAMP DRIVER WARN
The CPU is unable to
communicate with either
the O
3
generator or
photometer lamp I
2
C driver
chip.
- I
2
C has failed
O3 GEN LAMP TEMP
WARNING
IZS Ozone Generator
Temp is outside of control
range of 48C 3C.
- No IZS option installed, instrument improperly configured
- O
3
generator heater
- O
3
generator temperature sensor
- Relay controlling the O3 generator heater
- Entire Relay PCA
- I2C Bus
O3 GEN REFERENCE
WARNING
1
The O
3
generator’s
reference detector output
has dropped below 50 mV.
1
Possible failure of:
- O
3
generator UV Lamp
- O
3
generator reference detector
- O
3
generator lamp power supply
- I
2
C bus
O3 PUMP WARNING
1
The photometer pump
failed to turn on within the
specified timeout period
(default = 30 sec.).
- Failed Pump
- Problem with Relay PCA
- 12 VDC power supply problem
PHOTO LAMP TEMP
WARNING
The photometer lamp temp
is < 51C or >61C.
Possible failure of:
- Bench lamp heater
- Bench lamp temperature sensor
- Relay controlling the bench heater
- Entire Relay PCA
- I
2
C Bus
- Hot” Lamp
PHOTO LAMP STABILITY
WARNING
Value output during the
Photometer’s reference
cycle changes from
measurements to
measurement more than
25% of the time.
- Faulty UV source lamp
- Noisy UV detector
- Faulty UV lamp power supply
- Faulty ± 15 VDC power supply
PHOTO REFERENCE
WARNING
Occurs when Ref is
<2500 mVDC
or >4950 mVDC.
Possible failure of:
- UV Lamp
- UV Photo-Detector Preamp
REAR BOARD NOT DET
Mother Board not detected
on power up.
- THIS WARNING only appears on Serial I/O COM Port(s)
Front Panel Display will be frozen, blank or will not
respond.
- Failure of Mother Board
(table continued)
05744 Rev B 179