Epson FX-870/1170 User Manual download pdf (Page 53)

Troubleshooting

Chapter 3

Troubleshooting

Test Points ................................................................................................

3-1

Error Codes ...............................................................................................

3-5

Problem Isolation .....................................................................................

3-6

Serial Communications Errors

........................................................

3-7

Connector Locations

...............................................................................

3-18

Sensor Locations

.....................................................................................

3-19

Hex Quick Reference Table for ESC/P Commands

...............................

3-21

Hex Quick Reference Table for IBM Commands

...................................

3-23

List of Figures

Figure 3-1. Printhead Resistance

..........................................................

3-3

Figure 3-2. Connector Locations

..........................................................

3-18

Figure 3-3. Release Sensor

...................................................................

3-19

Figure 3-4.

Home Position Sensor

.......................................................

3-19

Figure 3-5. Platen Gap Sensor

.............................................................

3-20

Figure 3-6.

Front and Rear PE Sensors

..............................................

3-20

List of Tables

Table 3-1.

Power Supply Test Points

...................................................

3-1

Table 3-2.

Sensor Test Points ...............................................................

3-2

Table 3-3.

Motor Test Points and Coil Resistance

...............................

3-2

Table 3-4.

Printhead Test Points

and Coil Resistance

.......................

.3-3

Table 3-5.

Printhead Driver Test Points

..............................................

3-4

Table 3-6.

Carriage and Paper Feed Motor Driver Test Points

.........

.3-4

Table 3-7.

Error Codes

..........................................................................

3-5

Table 3-8.

Symptoms and Flowchart References

.................................

3-6

Table 3-9.

Identifying Serial

Communications Errors

.......................

3-7

Table 3-10.

Hex Codes for ESC/P Commands

.....................................

3-21

Table 3-11.

Hex Codes for IBM Commands

.........................................

3-23

Epson FX-870/1170

3-i

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 180 181

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