Oki 2200, 2400, 2600 Service manual

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Chapter 0 Manual Front Cover

Okifax 2200/2400/2600

Service Handbook

P/N 59264202

Part of service training kit #: 58234202

This document may not be reproduced without the written permission of the Okidata® Sales and Product Training Group. Every effort has been made to ensure the accuracy of the information contained in this training course. Okidata is not responsible for errors beyond its control.

© 1994 by Okidata All rights reserved. First Edition January, 1994 Second Edition July, 1994 Written and produced by the Okidata Sales and Product Training Please send any comments on this publication to the address listed below. Okidata Sales and Product Training 532 Fellowship Road Mount Laurel, NJ 08054-3499 Facsimile Number: (609) 235-2600, ext. 7034. Okilink Login Name: Technical Training OKI is a registered trademark of Oki Electric Industry Company, Ltd.; marques deposee de Oki

Electric Industry Company, Ltd.; marca registrada, Oki Electric Industry Company, Ltd. OKIDATA is a registered trademark of Oki Electric Industry Company, Ltd.; marques deposee de

Oki Electric Industry Company, Ltd.; marca registrada, Oki Electric Industry Company, Ltd. OKIFAX is a registered trademark of Oki Electric Industry Company, Ltd.; marques deposee de

Oki Electric Industry Company, Ltd.; marca registrada, Oki Electric Industry Company, Ltd. Touch Tone is a registered trademark of American Telephone and Telegraph

Blank Answer Sheet: Okifax 2200/2400/2600

Answer Sheet: Okifax 2200/2400/2600

Dealer Code: Todays Date:

Technicians Name: Company: Companys Address:

City: State/Province: Zip/Postal Code: Country: Phone #: Fax #: If your Dealership uses Okilink II, please provide your Dealerships Login Name. First: Last:

A B C D A B C D

1. O O O O 11. O O O O

2. O O O O 12. O O O O

3. O O O O 13. O O O O

4. O O O O 14. O O O O

5. O O O O 15. O O O O

6. O O O O 16. O O O O

7. O O O O 17. O O O O

8. O O O O 18. O O O O

9. O O O O 19. O O O O

10. O O O O 20. O O O O

Blank Test: Okifax 2200/2400/2600

1. When should the LED head be cleaned?

1. When paper is installed.

2. When a new toner cartridge is installed.

3. When the main board is replaced.

4. When vertical white lines or stripes appear on output.

A. 1 and 2 B. 3 and 4 C. 1 and 3 D. 2 and 4

2. When troubleshooting any image problems of received faxes, always make a local copy before assuming a defect in the receiving unit. The transmitting facsimile unit may be defective.

A. True B. False

3. According to the Service Handbook, lubrication should be

1. performed once a year.

2. performed as necessary.

3. done with Dow Corning Molycoat BR-2, Molycoat EM-30L, or equivalent.

4. done lightly, being careful not to over-lubricate. A. 1

B. 1 and 2 C. 1, 2, and 3 D. 1, 2, 3, and 4

4. The image sensor for an Okifax 2200 or Okifax 2400 has __________ less elements than the image sensor for the Okifax 2600.

A. 184 B. 284 C. 384 D. 484

5. Which of the following are true?

1. The LED Head Drive Time is adjusted by setting positions 1 through 4 of Switch 1 on the main controller board (for the Okifax 2200) and the printer control board (for the Okifax 2400/2600).

2. The LED Head Drive Time is always changed when a new LED head is installed.

3. The LED intensity rating is shown by the last three numbers of the label on the LED head.

4. The LED Head Drive Time can be modified through the operator panel.

A. 1 and 2 B. 3 and 4 C. 1 and 3 D. 2 and 4

6. The Okifax 2200, Okifax 2400 and the Okifax 2600 contain the same number of PC-1 sensors.

A. True B. False

7. Both the Okifax 2400 and the Okifax 2600 accept additional memory cards.The Okifax 2400 will accept one card at a time.The Okifax 2600 will accept two cards at a time.

A. True B. False

8. According to the FCC Telephone Consumer Protection Act, which of the following must the facsimile operator do?

1. Program the date into the facsimile unit.

2. Program the time into the facsimile unit.

3. Program a name (to identify the source facsimile) into the facsimile unit.

4. Program the telephone number of the source facsimile into the facsimile unit.

A. 1 B. 1 and 2 C. 1, 2, and 3 D. 1, 2, 3, and 4

9. The separation rubber should be cleaned with ethyl alcohol and replaced when the toner is replaced.

A. True B. False

10. You are working on an Okifax 2400. Technical Function 18 is ON. After the successful reception of a transmission, a verification stamp mark will be placed on the bottom of the original document.

A. True B. False

11. Documents should be placed face DOWN on the automatic document feeder guide.

A. True B. False

12. When checking the PC1 sensors on an Okifax 2600, the positive lead of the digital multimeter goes to pins __________ of CN12 on the main control board.

A. 2, 7, 11 B. 2, 8, 11 C. 3, 8, 11 D. 3, 9, 12

13. Which Technical Function enables sensor calibration during the Sensor Calibration / Scanning Check on an Okifax 2400/2600?

A. 64 B. 74 C. 84 D. 94

14. The Self-Diagnosis Test

1. prints the ROM version.

2. confirms the presence of RAM.

3. verifies printer unit operation.

4. confirms the presence of ROM.

A. 1 B. 1 and 2 C. 1, 2, and 3 D. 1, 2, 3, and 4

15. Performing a System Reset will erase all programmed user and service data. Before resetting the system, you should print a copy of the Configuration Report, the Auto Dial List, and the One Touch List.

A. True B. False

16. You are working with an Okifax 2400. Technical Function 47 is Department ID. When ALL settings for this function are ON, which of the following are true?

1. Use of the facsimile unit is restricted to authorized operators. Users must enter a pre-registered (access) code to operate the unit.

2. Twenty-four, four digit codes may be programmed into the unit.

3. Technicians can enter **** to access unit functions.

4. Thirty-five, five digit registered access codes may be programmed into the unit.

A. 1 only B. 1 and 2 only C. 1, 2, and 3 only D. 1, 3, and 4 only

17. You are using RAP 04. The document reaches PC1. It then feeds three inches and stops. SELECT LOCATION is displayed on the LCD. Place the items listed below in the correct order.

1. The Scan Adjustment does NOT correct the problem.

2. Copy quality is NOT acceptable.

3. Perform a local copy.

4. Replace the main control board.

5. The copied document is NOT all black.

A. 3, 5, 2, 1, 4 B. 5, 1, 3, 2, 4 C. 3, 5, 2, 4, 1 D. 3, 2, 5, 1, 4

18. Touching the transfer roller may cause incomplete toner transfer, resulting in faded output.

A. True B. False

19. You are troubleshooting an Auto Reception Problem on an Okifax 2600. Using RAP 07, place these actions in the correct order.

1. The main control board has been replaced.

2. Manual reception is okay.

3. The LINE board has been replaced.

4. User Function 21 is set to OFF.

5. The AUTO REC key has been pressed and the unit is in auto receive mode.

A. 2, 5, 1, 4, 3 B. 2, 5, 4, 1, 3 C. 2, 5, 4, 3, 1 D. 2, 5, 3, 1, 4

20. When installing the control panel assembly, make sure that the longer scanner hinge goes on the right.

A. True B. False

Okifax 2200/2400/2600 Certification Test Answer Key

Dealer Code: Todays Date:

Technicians Name: Company: Companys Address:

City: State/Province: Zip/Postal Code: Country: Phone #: Fax #: If your Dealership uses Okilink II, please provide your Dealerships Login Name. First: Last:

Chapter 1

1.1 Principles Of Operation

1.1 PRINCIPLES OF OPERATION

This module contains three sections.

· Transmitter Theory of Operation

· Receiver Theory of Operation

· LED Printer Theory of Operation

1.1.01 Compatibility

The facsimile machine operates as a Group 3 (G3) facsimile device.

1.1.02 Communications Mode

The unit operates as a half-duplex facsimile transceiver. Transmit and receive operations cannot take place at the same time. However, documents can be prepared for transmission while the machine is engaged in message reception. These documents will be automatically transmitted upon completion of the receiving operation.

1.1.03 Modem Operation

The high-speed modem conforms to the following standards.

· CCITT Standard V.29 for 9600/7200 bps (bits per second) operation

· CCITT Standard V.27 ter. for 4800/2400 bps operation

· CCITT Standard for V.17 14400/12000 bps (Okifax 2400, 2600 only)

· CCITT Standard for V.33 14400/12000 bps (Okifax 2400, 2600 only)

The low-speed (300 bps) modem, which is used for handshaking, conforms to CCITT standard V.21 Channel 2 or equivalent.

1.1.04 Automatic Fall-Back Mode

1.1.04 Automatic Fall-back Mode

The unit will change the message transmitting speed according to the following fall-back plan. The first page of the message is transmitted at 14.4 kbps (Okifax 2200 communicates at 9600 bps maximum). The receiving station will continuously monitor the received data. If the receiving station detects six or more consecutive error lines during reception of a single page, or if the total number of errors detected during the reception of a single page exceeds 10% of the data on the transmitted page, it will return a Retrain Negative (RTN) signal to the transmitting station upon termination of the page reception. With an RTN signal received, the transmitting station will downgrade its speed by one level (to 12 kbps in this case) and continue transmission of the next page. Similarly, should the transmitting station again receive an RTN signal from the receiving station, it will downgrade the speed another level.

1.1.05 Telephone Line Connection

The facsimile machine is connected to the telephone line via the line interface board. Two RJ-11 connectors are provided. One connects to the telephone line. The other connects to an external telephone. A separate modular jack is provided for connection of the handset.

The unit will control the switching between the handset (or the external telephone) and the telephone line to permit use of the handset or telephone for voice communication.

1.1.06 Error Correction Mode (ECM)

Error Correction Mode (ECM) provides error-free transmission when communicating with a remote unit that also has ECM.

Here is an explanation of the ECM process.

· The transmit machine groups image data into blocks and transmits one block of data at a time to the receive machine. At the end of each block, a Partial Page Signal (PPS) is transmitted.

· The receive machine stores the data block in memory and checks each frame within that block for errors.

Modified Huffman assigns a binary code to consecutive recurring bits of white or black. The codes

must add up to a total of 1728 bits, which is the Main Scan Rate established by CCITT.

Modified Read uses a comparison technique. The line being coded is compared to the previous line

and differences are noted. Codes are then assigned to reflect the differences between the two lines.

· If no errors are detected, the receiver sends Message Confirmation (MCF). MCF requests the transmit machine to transmit the next data block.

· If an error is detected by the receive machine, the receive machine will transmit the frame number of the defective frame back to the transmit machine in a signal called Partial Page Request (PPR).

· The transmit machine will then re-transmit the frame to the receive machine as a Partial Page.

· The receive machine rechecks the Partial Page, and (if all frames are correct) the receive machine transmits MCF.

· The next data block is transmitted.

1.1.07 Quick Scan Mode

Both the Okifax 2400 and Okifax 2600 have quick scan capability. With MEM Transmission enabled, the units will scan documents placed on the ADF tray into memory. During a quick scan operation, each letter size page is scanned in approximately three seconds. Once the documents are stored in memory, the transmission is initiated, without requiring additional user action.

· Okifax 2200 Quick Scan = 7.6 seconds per page (@ Standard Resolution)

· Okifax 2400 Quick Scan = 6.0 seconds per page (@ Standard Resolution)

· Okifax 2600 Quick Scan = 3.0 seconds per page (@ Standard Resolution)

1.1.08 Major Assemblies (Mechanical) - Cross-Section Diagram

1.1.08 Major Assemblies (Mechanical)

The following major mechanical assemblies make up the facsimile machine.

· Automatic Document Feeder (ADF) Unit / Scan Unit

· Printer Unit

1.1.09 Major Assemblies (Electrical)

The following major electrical assemblies make up the facsimile machine.

· Main Control Board (DFCU / MCNT)

· Printer Control Board (DFPU / PCNT)

· Network Control Board (NCU)

· Operator Panel Assembly Not Shown

· Power Supply Unit Not Shown

· Memory Board Not Shown

· Line Interface Board Not Shown

· Hook Switch Board Not Shown

· Connecting Board

· Second Paper Tray Mechanism Board

Okifax 2200 - Copy Function Block Diagram

Okifax 2400/2600 - Copy Function Block Diagram

Okifax 2200 - Report Print Function Block Diagram

Okifax 2400/2600 - Report Print Function Block Diagram

1.2 Transmitter Theory Of Operation

1.2 TRANSMITTER THEORY OF OPERATION

1.2.01 Typical Transmission

When a telephone number is dialed through the machine (either manually or through auto-dial), a connection will be established with the receiving station through the Public Switched Telephone Network (PSTN). When the call is answered, the operator will hear the Called Equipment Device (CED) tone from the receiving station. With CED received, the transmit machine acknowledges that the connection is established and proceeds to the CCITT T.30 300 bps handshake procedure.

NOTE:

Refer to the Receive and Transmit Handshake Procedure Block Diagrams for functional overviews of 300 bps handshaking.

Refer to the Transmit Block Diagram for an overview of G3 Transmit Operations

When the Digital Identification Signal (DIS) is received, G3 mode transmission is possible and the document is scanned, page by page. The image data is temporarily stored in First In First Out (FIFO) memory until it becomes valid for transmission. In approximately three seconds, the machine will receive Called Subscriber Identification (CSI) from the distant station. After reading the document pages and storing the image data in memory, the machine begins the handshake with the distant station. If the

14.4/9.6 kbps training is successfully completed, the machine will start transmitting the image data in digital, coded form. Training is a high speed data pattern transmitted to the receive modem. This training data pattern causes the receive modem to synchronize with the transmit modem. If the training fails due to bad phone line conditions, an automatic fallback to a lower rate will occur. The result will be indicated on the LCD display. As the machine transmits each page of image data, the page count on the LCD display will increment.

Training performs the functions listed below.

· Training tests the line condition for valid transmissions at a particular data rate. The TCF consists of 100 binary zeroes transmitted in a burst. At least 98% accuracy must be achieved before transmission can take place at that data rate.

· The receiving station uses training to set the preliminary equalization for the current line conditions.