Agilent 35900E Dual Channel Interface Service Manual
35900E Dual Channel Interface Agilent 35900E Service Manual
© Agilent Technologies 1994–2000 Electrical Shock Hazard Safety Symbols All Rights Reserved. Reproduction, adaptation, or translation without permission is prohibited, except as allowed under the copyright laws. WARNING CAUTION A caution calls attention to a condition or possible situation that could damage or destroy the product or the user’s work. Part number 35900-90417 First Edition, MAY 2000 Replaces Part No. 35900-90410, Operating and Service Manual.
Contents Chapter 1: Introduction Manual Overview ....................................................................................................... 6 Chapter 2: Troubleshooting the 35900E Verify the 35900E is Ready for Operation .............................................................. 8 In Case of Difficulty .................................................................................................. 8 Possible Causes for Failure...............................................................
1 Introduction Released: MAY 2000 Agilent 35900E Service Manual 5
Introduction Manual Overview Introduction The Agilent 35900E Dual Channel Interface Service Manual provides step-bystep instructions for removing and replacing various parts in your 35900E Dual Channel Interface. Refer to Chapter 3: Parts Replacement for parts identification. For operating directions, see the Agilent 35900E Dual Channel Interface Users Manual. Caution The 35900E contains parts that are sensitive to electrostatic discharge.
2 Troubleshooting the 35900E Released: MAY 2000 Agilent 35900E Service Manual 7
Troubleshooting the 35900E Verify the 35900E is Ready for Operation Troubleshooting the 35900E Verify the 35900E is Ready for Operation At power up, the 35900E automatically executes internal self-tests to determine the amount of memory installed and to verify that the main power, system memory, and the MIO communication interface, and other internal circuits are operating properly. These tests take about 30 seconds for a 1-MByte system. The FAULT light will blink ON/OFF during this time.
Troubleshooting the 35900E Verify the System is Ready for Operation If the problem persists after cycling the power, note the LED pattern on the front panel display. Check the following table for possible causes for failure. Table 1.
3 Parts Replacement Released: MAY 2000 Agilent 35900E Service Manual 10
Parts Replacement Overview Parts Replacement Overview This chapter provides a description of how to remove and replace each of the major components from the 35900E Dual Channel Interface. Since the 35900E repair strategy is only to the board or subassembly level, more detailed information is not needed. See Chapter 4 for an illustrated parts breakdown. The 35900E has been designed for easy assembly and disassembly of all the replaceable modules.
Parts Replacement Overview Table 2. Parts List for the 35900E Part No.
Parts Replacement Remove/Replace the Top Cover Remove/Replace the Top Cover WARNING 1. Place the unit on a table so that the back is visible to you (cables visible). 2. Remove the power cord. When removing or replacing the subassembly inside the 35900E, be certain the AC line cord is unplugged from the rear of the unit in order to avoid a potentially dangerous electrical shock. 3. Remove any cables attached to the rear panel. 4. Remove the two screws attaching the cover to the rear panel.
Parts Replacement Remove/Replace the Front Panel Remove/Replace the Front Panel 1. Remove the top cover. (See Figure 1.) 2. Disconnect the front panel connector from the mother board by pressing down on the two latches on the end of the connector on the mother board and lifting the connector straight up. (See Figure 2) 3. Remove the four screws holding the front panel to the unit. 4. Gently pull the front panel forward until it is detached from the frame. 5.
Parts Replacement Remove/Replace the Power Supply Remove/Replace the Power Supply 1. Remove the top cover. (See page 13.) 2. Remove the screw attaching the power supply to the right side of the frame. (See Figure 4.) 3. Disconnect the power supply cable. (See Figure 5.) a. Slide a flat-blade screwdriver (or your thumb nail) between the back of the connector and the white locking ridge. b. Grasp the ends of the connector between your thumb and forefinger and pull firmly upwards. 4.
Parts Replacement Remove the Connector Board Remove the Connector Board 1. Remove the top cover. (See page 13.) 2. Remove the MIO bracket. (See page 13.) 3. Remove the two screws attaching the connector board to the plate. The board will separate from the plate. (See part "A" in Figure 5.) Remove/Replace the Mother Board 1. Remove the top cover. (See page 13.) 2. Remove the front panel. (See page 14.) 3. Remove the MIO bracket and connector board. (See page 15 and 16.) 4.
Parts Replacement Remove/Install the SIMM Memory Boards Remove/Install the SIMM Memory Boards 1. Remove the top cover. (See page 13) 2. Push out on the metal tabs holding the board in place. (See Figure 3) 3. Tilt the SIMM memory board towards the front of the unit about 45° and slide it out. (See Figure 3) 4. If installed, repeat the process for the second SIMM. If using only one SlMM board, it must be installed in the slot closest to the front of the unit.
4 Instrument Parts Breakdown Released: MAY 2000 Agilent 35900E Service Manual 18
Instrument Parts Breakdown Parts Breakdown—Figure 4 Instrument Parts Breakdown Parts Breakdown—Figure 4 Item No. Description Part No.
Instrument Parts Breakdown Parts Breakdown—Figure 4 A 1 A 2 3 6 4 A A 7 Ground Clip Power supply Cable 5 Ground Wire B A Front Panel Connector Front Panel Cable Figure 4.
Instrument Parts Breakdown Parts Breakdown—Figure 5 Parts Breakdown—Figure 5 Item No. Description Part No.
Instrument Parts Breakdown Parts Breakdown—Figure 5 1 Power Supply Cable A A A 2 3 A 5 4 6 Power Supply Mounting Tabs Locking Metal Tabs Front Panel Connector Power Supply Connector/ Locking Ridge Figure 5.
