Yokogawa µR20000 - Manual (Page 12)

2-2 SM 04P01B01-01E
2.2 Failures and Corrective Actions
The table below describes the most common types of failures and their corrective
actions.
No power
Fail display (option /F1)
Date/time is initialized
Problem with key operation
Problem with display
(Pen Model)
Pen recording quality poor
(Pen Model)
Pen does not move
Error message (Error: 963) -> PEN1
Error message (Error: 964) -> PEN2
Error message (Error: 965) -> PEN3
Error message (Error: 966) -> PEN4
(Dot Model)
Printer does not function.
Printer error message
(Error: 961)
(Dot Model)
Printer carriage moves, but the
home position (zero position) is
not detected.
Printer error message (Error: 961)
Condition of power supply connection
Power supply voltage
Peripheral wiring of the CPU Assembly
Popwer Assembly
CPU Assembly
Other Assemblies (power supply part short)
CPU Assembly
Voltage and connection of Battery Assembly
CPU Assembly
Battery Assembly
Key lock function
FPC connection between Display Assembly and Pen/Dot
Joint PCB
Display Assembly
CPU Assembly
FPC connection between Display Assembly and Pen/Dot
Joint PCB
Display Assembly
CPU BAssembly
Pen axis load, condition of shaft, abnormal noises, etc.
Adjust the recording position.
Pen Servo Assembly
Check whether the recorder has started, as well as the
pen axis load, abnormal noises, etc.
FPC connection between Pen Servo Assembly and
Pen Driver PCB
FPC connection between Pen Driver PCB and Pen Joint
PCB
Pen Servo Assembly
Pen Driver PCB
Pen Joint PCB
FPC connection between Dot Driver PCB and Dot Joint
PCB
Wiring to the Motor Assembly
Dot Driver PCB
Dot Joint PCB
Motor Assembly
FPC connection between Dot Driver PCB and Dot Joint
PCB
Printer carriage load, noises, etc.
Home position sensor
Dot Driver PCB
Dot Joint PCB
Motor Assembly
Action
Refer to
chapter 6
Description Phenomenon No.
Page Item
Chec
k
Adjust Replace
6-4, 14 12
6-6, 16 8
6-4, 14 12
6-4, 14 12
6-4, 14 12
6-4, 14 14
6-4, 14 14
6-4, 14 1, 6
6-4, 14 1, 6
6-4, 14 1
6-4, 14 14
6-5 22
6-5 22
6-4 7
6-5 22
6-4 6
6-4 6
6-4 7
6-14 6
6-14 6
6-15 23
6-15 23
6-15 23
6-14 7
6-14 7
6-14 6
6-15 14
- -
- -
- -
- -
- -
- -
- -
6-14 6
6-14 7
6-14 7
6-4 7
6-4, 14 1
1
2
3
4
5
6
7
8
9