3.4.9 Self-Diagnostic Functions
This model is provided with the functions that a circuit error is detected by the MPU and this error is indicated by
the LED blink frequency.
When the protector is in operation, the LED is made to blink as shown below in order to indicate the factor of
protector operation.
LED Blinking Patterns for Each Protector Operation (List of Protector Indicators)
LED condition
Protector condition
Short (0.5s) lighting frequency
Long (2s) lighting frequency
HV data error
3
1
HV latch (fall)
2
1
Beam protector
5
1
Secondary power short
7
X-lay protector
1
1
(1) How to count the LED lighting frequency [Example: HV data error (3 times)]
2 sec. 0.5 sec. 0.5 sec. 0.5 sec. 2 sec.
Once
Twice 3 times
(Frequency: Lighting 3 times)
Lit
Unlit
(2) Diagnostic mode and error circuit
3 times --- HV data error ------------------------- Power OFF/ON and data recovery
(HV adjustment value is destroyed or IC104 is failure).
2 times --- HV latch (falls) ----------------------- Check Item 3.4.4
5 times --- Beam protector ---------------------- Check Item 3.4.4
6 times --- Secondary power short ------------ Check Item 3.4.1
3-27
Summary of Contents for DPro2070SB
Page 22: ...1 15 Fig 7 The principle of DDCC compensation ...
Page 23: ...1 16 Fig 8 a DDCC adjustment item ...
Page 24: ...1 17 Fig 8 b DDCC adjustment item ...
Page 25: ...1 18 Fig 9 DDCC circuit diagram ...
Page 103: ...4 Wave form 1 POWER 2 CONTROL MAIN 3 DEFL MAIN 4 DEFL SUB COIL DRIVE MAIN 5 VIDEO ...
