2 troubleshooting checklist, 2 troubleshooting checklist -4 – Yokogawa Removable Chassis DX1000N User Manual
Page 13
2-4
SM 04L41B01-01E
2.2 Troubleshooting Checklist
The table below describes the most common types of failures and their corrective
actions.
No. Phenomenon
Action
Description
Refer to Chapter 6
Check
Adjust
Replace
*1
Part Name
DX1000
DX1000N
DX2000
Page Item Page Item Page Item
1
The instrument
doesn’t start
even though
the power is
ON
Power supply cable connection/wiring -
-
-
-
-
-
-
MAIN POWER BOARD ASSEMBLY
Power PBA
6-4
4
6-13
3
6-23
6
MAIN BOARD ASSEMBLY
Main PBA
6-4
12
6-13
14
6-23
18
SUB BOARD ASSEMBLY
Sub PBA
EXP. BOOT
6-4
13
6-13
15
6-23
19
2 FAIL state
MAIN BOARD ASSEMBLY
Main PBA
6-4
12
6-13
14
6-23
18
SUB BOARD ASSEMBLY
Sub PBA
EXP. BOOT
6-4
13
6-13
15
6-23
19
OPTION TERMINAL ASSEMBLY
Option
Terminal
Assembly
6-6
4
6-16
4
6-26
14, 17
20, 23
3
Abnormal
functioning of
memory
(backup)
Battery connection
Battery
Assembly
6-4
14
6-13
16
6-23
20
Battery voltage
(must be +3.0 V or more)
-
-
-
-
-
-
-
MAIN BOARD ASSEMBLY
Main PBA
6-4
12
6-13
14
6-23
18
SUB BOARD ASSEMBLY
Sub PBA
EXP. BOOT
6-4
13
6-13
15
6-23
19
4
Key operation
abnormality
Check the FFCs
*2
for key wiring
(whether pulled out or damaged)
-
-
-
-
-
-
-
SW & Sensor BOARD ASSEMBLY
Key Case
Assembly
6-3
14
6-12
20
6-22
4
CONNECTION BOARD ASSEMBLY
CONN. PBA
6-3
6
6-12
7
-
-
MAIN BOARD ASSEMBLY
Main PBA
6-4
12
6-13
14
6-23
18
5 LCD display
not normal
Check the FFCs
*2
for key wiring
(whether pulled out or damaged)
-
-
-
-
-
-
-
MAIN BOARD ASSEMBLY
Main PBA
6-4
12
6-13
14
6-23
18
SUB BOARD ASSEMBLY
Sub PBA
EXP. BOOT
6-4
13
6-13
15
6-23
19
CONNECTION BOARD ASSEMBLY
CONN. PBA
6-3
6
6-12
7
-
-
Back Light Unit of LCD ASSEMBLY
Back Light
Unit
6-3
3
6-12
4
6-22
3
LCD & INVERTER UNIT
LCD
6-3
3
6-12
4
6-22
1
6
Large
measurement
error
Temperature
measurement
abnormal
Keep input wires away from noise
sources (through distance and
shielding, etc.)
-
-
-
-
-
-
-
Check that the input terminals are not
disconnected from the instrument
-
-
-
-
-
-
-
Check that the input terminal cover is
not loose
-
-
-
-
-
-
-
Check that the RJC (INT/EXT) setting
is correct
-
-
-
-
-
-
-
AD SCANNER BOARD ASSEMBLY
AD-STD/
ISO
6-4
22
6-13
26
6-23
40, 41
42, 43
7
Fluctuation
in measured
values
Does the integral time setting of the
A/D converter match the power supply
frequency?
-
-
-
-
-
-
-
Keep input wires away from noise
sources (through distance and
shielding, etc.)
-
-
-
-
-
-
-