Contents

General Information

1

 

 

 

The Phaser 1235 Color Printer

2

 

Printer RAM and printer capabilities

4

CRU life counter behavior

4

 

Print engine assemblies

5

 

 

The image processor board 11

 

The control panel

12

 

 

On Line LED

12

 

 

! Fault

12

 

 

 

Rear panel

13

 

 

 

Accessing special operating modes

14

System controller board LEDs 14

 

Paper tray type sensing

15

 

Specifications

16

 

 

 

Regulatory specifications

19

 

Error Codes and Messages 21

Error messages 21

Troubleshooting 31

Power on self-diagnostic test

32

 

 

 

Print engine troubleshooting

33

 

 

 

Testing the print engine

33

 

 

 

Verifying printer operation by using its self-test print

34

Verifying power supply operation

34

 

 

Measuring power supply voltages 34

 

 

Inspecting the low-voltage power supply fuse

36

 

Safety interlocks

36

 

 

 

Testing for a shorted motor

37

 

 

Motor and fuser roller resistances

38

 

 

Media jams and the paper path 39

 

 

Media-based problems

 

39

 

 

 

Media problems

39

 

 

 

Multiple-sheet pick

39

 

 

 

The media skews passing through the paper path

40

Paper tray indicates it is empty when it is not

40

 

Service Guide

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Tektronix 1235 manual Contents

1235 specifications

The Tektronix 1235 is a versatile and high-performance oscillograph that has made a significant impact in the realm of electronic testing and troubleshooting. Renowned for its innovative technologies and robust features, the 1235 caters to a wide range of applications, particularly in industries such as telecommunications, automotive, and educational institutions.

One of the standout features of the Tektronix 1235 is its dual-channel capability, allowing users to observe and analyze multiple signals simultaneously. This is particularly advantageous for engineers and technicians who need to compare waveforms directly, enhancing their ability to diagnose circuit-related issues efficiently. The oscilloscope supports a bandwidth of up to 100 MHz, ensuring that it can capture fast transient signals with precision.

The Tektronix 1235 also boasts a sampling rate of 500 MS/s, which is crucial for accurately reconstructing complex waveforms. This high sampling rate minimizes the risk of aliasing, ensuring that signals are displayed accurately on the screen. Furthermore, its deep memory architecture allows for long acquisition times, enabling prolonged observation of waveforms without the need to frequently refill memory.

In terms of user interaction, the Tektronix 1235 features a user-friendly interface that simplifies the process of setting up measurements. The clear, bright display enhances visibility, even under varying lighting conditions. It also includes numerous trigger options, so users can capture specific events with ease, making it well-suited for troubleshooting repetitive signals or sporadic glitches.

Another key characteristic of the Tektronix 1235 is its reliability and build quality. Designed to withstand the rigors of daily use in demanding environments, this oscilloscope is robust, ensuring that it remains operational even in challenging conditions. The modularity of the device allows for easy upgrades, meaning it can evolve alongside technological advancements and changing user needs.

The combination of its advanced features, impressive performance specifications, and ease of use makes the Tektronix 1235 an indispensable tool for engineers and technicians alike. Whether for educational purposes or intricate electronic debugging, this oscilloscope provides unparalleled capabilities that empower users to handle modern electronic challenges with confidence. Its legacy continues to influence the design and functionality of oscilloscopes in the industry today.