Vision Fitness R44 Specifications download pdf (Page 27)

CAUTION

Make certain that the speaker is not defective

prior to installing the repaired unit.

6-5. LIGHTBAR.

A. General.

Any competent electronic technician should

have little difﬁculty in tracing a malfunction, should

any occur. For emergency replacement of any of the

small components, care must be used when solder-

ing. Heat easily damages transistors, capacitors and

circuit boards. It is therefore advisable to use long-

nose pliers or a similar heat sink on the lead being

soldered.

CAUTION

To avoid damage to the unit, disconnect all

red wires to the unit at the battery before

proceeding.

B. Cover Removal.

See ﬁgure 6-3. Remove and retain the four

screws which secure the cover on the lightbar. Slide

the cover back slightly and carefully lift to remove.

C. Printed Circuit Board Removal.

The Premium Vision SL lightbar contains

two circuit boards. See ﬁgure 6-4.

To remove a circuit board, proceed as fol-

lows:

1. Remove and retain the fasteners which

secure the circuit board to the lightbar.

CAUTION

Unpredictable operation may result if mo-

tor cables, or lamp driver cables, are mixed.

Before removing cables, mark the cables for

proper reconnection when reassembling.

WARNING

Failure to observe this warning WILL

result in severe instantaneous damage to

the Premium Vision SL system.

The reverse polarity protection WILL

NOT protect against reversed red (+)

and black (-) wires to individual circuit

boards. Ensure that all positive (red)

and negative (black) wires are properly

reconnected when replacing a circuit

board.

290A5276-18

COVER SCREWS (2 TOP, 2 BACK)

Figure 6-3.

2. Disconnect wires and cables as appli-

cable.

3. Repair or replace the circuit board as

required.

D. Smart Pod Servicing. (See ﬁgure 6-5.)

1. Remove and retain the two Torx head

screws which secure the dome to the pod. Carefully

remove the dome and set it aside.

2. To gain access to the motor, proceed as

follows:

a. Remove and retain the screws

which secure the pod to the lightbar extrusion. Re-

move and retain the screws which secure the motor

support assembly to the pod.

b. Disconnect the six-pin motor

cable plug and the three-pin opto isolator cable.

c. Carefully lift the motor support

assembly from the pod.

3. After servicing is complete, reassemble

the pod by performing the above steps in reverse

order.

290A5276-19

SMART POD/SIGNALMASTER

BOARD

MOTHERBOARD

Figure 6-4.

6-4

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Vision Fitness R44 Specifications Page 27

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