2 failures and corrective actions, Failures and corrective actions -2 – Yokogawa µR20000 User Manual
Page 12
2-2
SM 04P02B01-01E
2.2
Failures and Corrective Actions
The table below describes the most common types of failures and their corrective
actions.
Action
Refer to
chapter 6
Description
Phenomenon
No.
Page
Item
Chec
k
Adjust
Replace
1 No power
Condition of power supply connection Power supply
-
-
voltage
Peripheral wiring of the CPU Assembly
6-8
24
6-22 22
Power Assembly
6-8
21
6-22 17
CPU Assembly
6-8
24
6-22 22
Other Assemblies (power supply part short)
-
-
2 Fail display (option /F1)
CPU Assembly
6-8
24
6-22 22
3 Date/time is initialized
Voltage and connection of Battery Assembly
-
-
CPU Assembly
6-8
24
6-22 22
Battery Assembly
6-8
15
6-22 16
4 Problem with key operation
Turning OFF the key lock function
-
-
FPC connection between Display Assembly and
6-4, 5
1
Pen/Dot Driver PCB
6-18, 19 1
Display Assembly
6-4, 18 1
5 Problem with display
FPC connection between Display Assembly and
6-4, 5
1
Pen/Dot Driver PCB
6-18, 19 1
Display Assembly
6-4, 18 1
6 (Pen
Model)
Pen axis load, condition of shaft, abnormal noises, etc. -
-
Pen recording quality poor
Adjust the recording position.
-
-
Pen Servo Assembly
6-6
2
7 (Pen
Model)
Check whether the recorder has started, as well as the -
-
Pen does not move
pen axis load, abnormal noises, etc.
Error message (Error: 963)
->
PEN1
FPC connection between Pen Servo Assembly and
6-6
2, 18
Error message (Error: 964)
->
PEN2
Pen Servo PCB
Error message (Error: 965)
->
PEN3
FPC connection between Pen Servo PCB and Pen
6-5
1
Error message (Error: 966)
->
PEN4
Driver PCB
6-6
18
Pen Servo Assembly
6-6
2
Pen Servo PCB
6-6
18
Pen Driver PCB
6-5
1
8 (Dot
Model)
Wiring the Carriage Motor Assembly
6-20
10
Printer does not function.
Dot Driver PCB
6-19
1
Printer error message (Error: 961)
Carriage Motor Assembly
6-20
10
9 (Dot
Model)
Printer carriage load, noises, etc.
-
-
Printer carriage moves, but the
Home position sensor
6-20
24
home position (zero position) is
Dot Driver PCB
6-19
1
not detected.
Carriage Motor Assembly
6-20
10
Printer error message (Error: 961)