Dräger Julian PCB CIO 8601051 Handbuch

Service

Procedure

Field

Date: 28 June 2002

Part Number: SP00249

Rev: -

Repair Instructions:

Julian PCB CIO 8601051

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Repair Instructions for PCB CIO 8601051

1. What is needed?

a) Lithium battery- p/n 1835343

b) Buss wire- Kynar insulated 30awg buss wire or equivalent

c) ESD Kit (Electro-static discharge kit)

d) Soldering Iron (15 W w/ fine-tip)

e) Solder- Kester “44” Rosin core solder .031dia or equivalent

f) Side cutters

g) Needle-nose pliers

2. What is to be done?

Warning: This procedure should only be performed by professional technicians with

electronic soldering experience. If not performed properly, damage to the PCB may occur.

Warning: Electrostatic discharge can damage electronic components. When working on

electronic equipment use an anti-static mat and a wrist strap (ESD Kit).

1. Remove power to Julian.

2. Remove upper left back panel.

3. Locate and remove PCB CIO and place on ESD mat. See Figure 1.

Figure 1- CIO PCB Location

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4. Examine the area shown in Figure 2, on the PCB CIO. If there is a pull-up resistor present, remove

lithium battery and continue with Step 5. If there is no pull-up resistor, no further action is necessary.

Replace battery as necessary according to documented replacement interval, if necessary.

5. Using side cutters, cut the resistor leg from PIN 8 of the IC as close as possible to the IC (see Figure

3). Using the needle nose pliers, bend the resistor leg away from the IC so it is straight (see Figure

4).

Pull-up resistor

Figure 2- Pull-up Resistor Location

Figure 3- Cutting the Resistor

Serial number label

Figure 4- Soldering Buss Wire to Resistor

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6. Briefly heat the unsoldered end of the resistor and attach one end of the buss wire. Take care to limit

soldering so that the buss wire insulation does not melt and the soldered leg of the resistor does not

become detached. (See Figure 4)

7. Attach the remaining loose end of the buss wire to the surface mount resistor as shown in Figure 5.

Take care to limit soldering so the Surface Mount resistor does not become detached. For photo of

completed rework see Figure 6.

8. Locate the CIO PCB serial number label. Change revision of PCB from 3.0 to 4.0 with permanent

pen. (See Figure 2)

9. Install new battery in CIO PCB. Install reworked CIO PCB in accordance with “Repair Instructions /

Electronics / CIO PCB”, section 27.5- “Replacing Battery on CIO PCB” of the Julian service

documentation. Reconfigure machine to customer parameters.

10. Reinstall back panel. Supply power to Julian.

11. Perform Safety and Function Test.

Figure 5- Buss wire to Surface Mount resisto

Figure 6- Completed Rework

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DrägerService is a division of

Draeger Medical, Inc.

3122 Commerce Drive

Telford, PA 18969

Tel: (215) 721-5402

(800) 543-5047

Fax: (215) 721-5784

Web: www.draegermedical.com

Printed in the U.S.A.

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