Welch Allyn LS135, LS150 User Manual

No. 44300 No. 44500
No. 44302 No. 44502
No. 44303 No. 44503
No. 44304 No. 44504
No. 44306 No. 44506

Welch Allyn, Inc.
4341 State Street Road
P.O. Box 220
Skaneateles Falls, NY 13153-0220
USA

LS135/LS150
EXAM LIGHT

MP

LA
REPLACEMENT
INSTRUCTIONS

Telephone: [phone]
Fax: [phone]

Printed in U.S.A. Part No. 443148 Rev. C

WARNING: LAMPS OPERATE AT A HIGH
TEMPERATURE. DO NOT ATTEMPT TO REPLACE LAMP

LE HOT. WAIT UNTIL LAMP IS COOL.

WHI

Lamp Replacement

1. Exposing the Lamp (See Figure #1)

• Turn power switch to the off (“0”) position and unplug power cord from
outlet

.

• Rotate Light Assembly so that the lamp points up (towards ceiling).

• Completely loosen screw in Lamp Housing and lift Lamp Housing to expose
lamp.

2. Freeing the Lamp and Lamp Socket (See Figure #2)

• Unclip the Lamp Retaining Wire from the Lamp Housing by pushing on wire
“ears” towards center and swing out as shown to free the Lamp and Lamp
Socket.

3. Removing the Lamp Socket (See Figures #3 and 4)

• Hold the Lamp reflector by its outer rim. Grasp the white sides of the lamp
Socket as shown (Figures 3 and 4) pulling on the Lamp Socket while rocking
it

slightly to remove it from the Lamp. Do not pull on Lamp Socket Wires.

4. Install the new Lamp

• Verify that the lamp number located on the metal plate inside the Light
Assembly (Figure 2) matches the replacement lamp number.

• Replace Lamp and reattach Lamp Retaining Wire to Lamp Housing.

• Align Lamp pins to Lamp Socket holes and reconnect Lamp Socket.

• Reinstall Lamp Housing onto Light Assembly by first engaging Lamp
Housing

tab (opposite screw) into Light Assembly. Fully tighten screw.

• Reconnect Power cord and verify Lamp operation.

Figure 1

Figure 3

Lamp Housing

Light
Assembly

Figure 2

Replacement
Lamp # on this
Plate

Lamp
Retaining

re

Wi

Lamp

Lamp Socket

Figure 4

Lamp Socket Wires