Shimadzu SPD-20A - Chapter 8 Troubleshooting; 8.1 Using symptoms to identify the problem; 8.2 Using the error display to identify the problem; 8.3 Problems with electrical circuits and points to check

228-90095F
4
6
Chapter 8 Troubleshooting
8.1 Using symptoms to identify the problem
Please read a see instruction manual.
8.2 Using the error display to identify the problem
No. Error Message Cause and remedial measure Error Type
1 ROM FAILURE ROM Sum error → replace PCB Fatal
2 RAM FAILURE RAM Matching check error→ replace PCB Fatal
3 ERR GR HOME POS
Grating motor HP sensor error
→ loose cable, defective sensor, defective PCB
Fatal
4 ERR FIL HOME POS
Filter motor HP sensor error
→ loose cable, defective sensor, defective PCB
Fatal
5 ERR LAMP HOME POS
HP sensor error for lamp switching
→ loose cable, defective sensor, defective PCB
Fatal
6 ERR EEPROM WRITE
EEPROM writing error
→ defective PCB, defective device (guaranteed to
100,000 cycles)
Fatal
7 ERR LEAK DETECT
Leakage detected
→ Leaking liquid, thermistor contact, defective PCB
Alarm
8 NOT PROTECTED
Loss of EEPROM settings (sum error)
→ NMI writing error, power turned off during edit,
PCB defect, noise
Alarm
9 CHECK NO GOOD
656/254 wavelength differential greater than 1 nm.
→ Cell attachment, bubble intrusion, inappropriate
sample, D2 or Hg lamp defect, GM threshold defect
Alarm
10 ERR OVER CURRENT
D2 lamp anode current monitor defect
→ D2 lamp defect, PCB defect
Alarm
11 ERR D2 LAMP
D2 lamp will not go on even after retrying
→D2 lamp defect, PCB defect
Alarm
12 ERR OVER HEAT
Overheated D2 lamp circuit radiator→ Open cover &
fan, D2 lamp defect, PCB defect
Alarm
13 LAMP NO RIT
Lamp does not light during ZERO & MARK
→ Turn on the lamp.
Warning
14 SELECT D2 SINGLE
D2 Lamp does not light in wavelength mode 2 during
WAVE CHECK
→ D2 malfunction, change to wavelength mode 1
Warning
15 SET ANOTHER λ
Wavelength setting defect in wavelength mode 2
→ Set without straddling 370/700.
Warning
16 KEY CLOSED
Key operated during KEY CLOSE mode
→ Press Del+CE to cancel KEY CLOSE
Warning
17 DATA NOT EXIST
Spectrum outputted without scanning
→ Perform scan
Warning
18 LOW SET TEMP
Cell temp set outside control range
→ Change temp setting
Warning
19 NO D2 LAMP
D2 lamp not installed
→
D2 lamp disconnected or defective, PCB defect
Alarm