Welch Allyn Traditional Instruments User manual

Service Manual

Manuals

Repair Parts Catalog

Traditional Instruments

Service Manual

Traditional Instruments

PN 117081-1

Medical Division

4341 State Street Road, P.O. Box 220

Skaneateles Falls, NY 13153-0220

PN 117081-1

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Drawings and/or illustrations and/or part numbers contained in this document are for reference purposes only. For current revisions call Welch Allyn Customer Service 1-800-535-6663.

If during servicing these products, you require further technical assistance, call Welch Allyn.

Traditional Instruments Service Manual PN 117081-1

TABLE OF CONTENTS

Section 1 ................................................................ Ophthalmoscope

Section 2 ..................................................................Strabismoscope

Section3 ....................................................................... Retinoscopes

Section 4 ...........................................................................Otoscopes

Section 5 ................................ Illuminated Bivalve Nasal Speculum

Section 6 ............................................................ Larynx Illuminator

Nasopharynx Illuminator

Larynx Illuminator

Nasopharynx Illuminator

Section 7 ..............................................................Tongue Depressor

Section 8 ...................................................... Fiber Optic Anoscopes

Procto-Sigmoidoscopes

Fiber Optic Light Head

Standard Anoscopes

Rotating Anoscope

Section 9 ..........................................................................Headlights

Section 10 ...........................................................................Episcope

Section 11 .................................................... Laryngoscope Handles

Section 12 ....................................................................... Illuminator

Section 13 .......................................................Laryngoscope Blades

Section 14 ............................................................... Battery Handles

Section 15 .................................................................. Light Handles

Section 16 .......................................................................... Penlights

Pocket Lights

Section 17 ..............................Binocular Indirect Ophthalmoscoope

Section 18 ........................... Binocular Indirect Ophthlamoscope II

Section 19 .......................................................................CompacSet

Section 20 ...................................................CompacSet Ophthalmic

Section 21 ................................................... 767 Wall Transformner

Section 1

OPHTHALMOSCOPES

MODEL # SUB-SECTION PAGE

11110 A 1-2, 11400, 11411 B 3 11470, 11475, C 4 11500, 11511 D 5-6 11600 E 7 11605 F 8 11610 G 9 11620 H 10 11630 I 11-12 11650 J 12-13 11660, 11710 K, L 14 11720 M 15-16 11730 N 17-18 12810, 12813, 12814, 12830 0 19-20 APPENDIX 1 21 APPENDIX 2 22 APPENDIX 3 23 APPENDIX 4 24-26

OPHTHALMOSCOPES

Special Instructions Ophthalmoscope Service:

Clean all returned ophthalmoscopes by wiping with a solution of 10% Clorox / 90% water. Do not apply alcohol, chemicals or water to the mirror or lenses. Follow disassembly and assembly sequences as printed. Disassembly of the Optical Tube Base is not recommended or covered by this Service Manual. Always begin service work with a thorough understanding of the customer’s complaint and its cause. Avoid overtightening of fasteners by applying light tightening torque.

Notes: 1. “*SLP*” means “Small Loose Parts” and cautions you to disassemble carefully,

reducing the chances of losing small, possibly spring-loaded, parts.

2. Use T-10913 for loosening the lock ring.

3. Refer to corresponding diagrams in Welch Allyn Repair Parts Catalog PN

900299.

A. 11110 2.5 Volt Halogen Lite Set ™ Ophthalmoscope Disassembly:

A1 Lamp -- Pull lamp from bottom of optical tube.

A2 Bumper -- Pull corner, peel back.

A3 Cover Ass'y -- Loosen retaining ring.

(Doctor-side)

A4 2 Screws -- Un-screw 2 screws, (torx 05).

Remove cover assembly (doctor-side) *SLP*. Remove (from doctor-side cover): lens disc, lens dial index spring, magnifier lens.

A. 11110 2.5 V Halogen Lite Set™ Ophthalmoscope Cont'd: A5 Ophthalmoscope -- Remove: Horseshoe (PN111026)

Body Assembly Numeral Illuminator

Aperture Disc Assembly Index Spring 2 Screws (Holding the lens holder ass'y) Lens Holder Assembly Filter Housing and Filter * Optical Tube Base *Filter is easily scratched.

**** 11110 Reassembly ****

A6 Ophthalmoscope -- Insert optical tube base assembly into ophthalmoscope body.

Body Assembly Inspect filter over shiny metal surface and look through filter at

its own shadow. One side will show a ‘blue’ tint. Place tint side of the filter towards the inside of the scope during reassembly. When using new replacement filter, remove protective polyethylene films 2 sides. Insert filter into filter housing and place into ophthalmoscope body with filter housing finger tab towards top of the scope. Place lens holder assembly into position and fasten with 2 screws. Place index spring onto raised anchor. Rounded indexing spring end should face the hub. Place aperture disc assembly onto hub with apertures at bottom. Place numeral illuminator on top of the center of the aperture disc assembly with pivot in hole at base. Place horseshoe over numeral illuminator with open end of horseshoe at top as shown in parts diagram and notch directly over numeral illuminator.

A7 Cover Assembly -- Place lens dial index spring onto the raise anchor. (Rounded

(Doctor Side) end of indexing spring towards lens disc assembly hub).

A8 Lens Disc Assy. -- Clean disc. Place disc on hub. (Number side down) engage

with detent.

A9 Cover Ass'y -- Place cover onto ophthalmoscope body assembly. Place ring

(Doctor Side) onto base with numbers “128” right-side-up. Tighten ring,

screws. Install bumper.

A10 Lamp -- Align pin of lamp into groove of lamp socket and press lamp

in. Test.

End 11110 Reassembly

B 11400 and 11411 2.5 Volt Ophthalmoscope Disassembly:

B1 Bumper -- Pull corner, peel back.

B2 Back Cover -- Loosen and remove retaining ring.

(Doctor-side)

B3 2 Screws -- Remove 2 screws, (torx .05) separate covers. *SLP*

Remove (from doctor-side cover):lens disc, center hub (metal) indexing spring, lens retainer, magnifying lens.

B4 Housing -- Separate housing from optical tube base assembly. (Patient-side)

B5 Lamp -- Pull lamp from bottom of optical tube.

**** 11400 and 11411 Reassembly ****

B6 Cover -- Insert optical tube base assembly.

(Patient-side)

B7 Indexing Spring -- Place spring into position below bumper cut-out of doctor-side

cover. (Return bend on left side)

B8 Magnifying Lens -- Place lens into opening of body cover, round side down, flat

side facing you.

B9 Lens Retainer -- Place lens retainer on top of lens.

B10 Lens Disc Ass'y. -- Clean disc. Place disc in cover. (Number side down, engaged

with detent) place hub in center of lens disc (small pivot side up).

B11 Cover -- Place cover onto patient-sidecover/optical tube base assembly.

Install and tighten ring (undercut knurl or smooth edge at bottom) screws. Install bumper.

B12 Lamp -- (Only halogen lamps are available for the 14000).

Align pin of lamp into groove of lamp socket and press lamp in. Test.

End 11400 and 11411

C 11470 and 11475 2.5 Volt Ophthalmoscope Disassembly:

C1 Bumper -- Pull corner, peel back.

C2 Back Cover -- Loosen and remove retaining ring.

(Doctor-side)

C3 2 Screws -- Remove 2 screws, (torx .05) separate halves.*SLP*. Remove

(from doctor-side cover): lens disc, indexing spring and button, lens retainer, magnifying lens.

C4 Housing -- Separate housing from optical tube base assembly.

(Patient-side)

C5 Lamp -- Pull lamp from bottom of optical tube.

**** 11470 and 11475 Reassembly ****

C6 Cover -- Insert un-printed plug (tabs pointing to top of instrument),

(Patient-Side) optical tube base assembly.

C7 Indexing spring -- Place spring into position below bumper cut-out of doctor-side

cover. (2 tabs on spring facing down).

C8 Indexing Button -- Place button, into guides beneath spring, flat side to spring.

C9 Magnifying Lens -- Place lens into opening of body cover, round side down, flat

side facing you.

C10 Lens Retainer -- Place lens retainer on top of lens.

C11 Lens Disc Ass'y. -- Clean disc. Place disc in cover.

(Number side down, engaged with detent)

C12 Cover -- Place cover onto patient-side cover/optical tube base assembly.

(Doctor-Side) Install and tighten ring (undercut knurl or smooth edge at

bottom), screws. Install bumper.

C13 Lamp -- Align pin of lamp into groove of lamp socket and press in. Test.

End 11470 and 11475

D 11500 and 11511 2.5 Volt Ophthalmoscope Disassembly:

D1 Rubber Hood -- Pull corner, lift up.

D2 Light Carrier -- Pry/pull out light carrier assembly and remove condensing

Assembly lens and lamp.

D3 Back Cover --

(Doctor-Side) key). Remove light carrier retaining spring from ring nut if

D4 Ophthalmoscope -- Remove lens disc and small glass lens. Do not remove

Body aperture assembly disc now. Clean lens disc. Check tightness

D5 Aperture Ass'y -- Pull aperture assembly (disc) straight up. Remove small detent

Loosen/remove

damaged. Remove base. Remove cover. *SLP* (Glass lens PN106006)

of the three small brass screws in center of lens disc. (Do not disassemble lens disc) *SLP* clean in ultrasonic bath. Optional upgrade: Replace multi-lens disc with acrylic lens disc. Remove clear plastic washer (.76" or 19.4mm outside diameter / .45" or

11.58mm inside diameter, PN 106017) brass insert (disc) from hub. Remove lens disc indexing spring detent at top. Un-screw screws from mirror holder assembly, and remove mirror assembly.

spring, clear plastic spacer (.75" or 19.19 mm outside diameter / .223" or 5.67 mm inside diameter, PN 106019; not found on all 115 scopes)

set screw first and then ring nut. (Use .035" hex

**** 11500 and 11511 Reassembly ****

D6 Ophthalmoscope -- Insert both detent springs (top spring return bend to the left;

Body bottom spring return bend to the right). Place clear plastic

spacer (small hole) onto hub. Place aperture disc ass’y on hub (engage detent spring). Place mirror holder assembly over edge of aperture disc and fasten with 2 screws. Place clear plastic washer (large hole) and hub insert onto mirror holder assembly hub.

D 11500 and 11511 2.5 Volt Ophthalmoscope Reassembly:

D7 Lens Disc Ass'y -- Place lens disc assembly onto hub (number side up) and engage

in detent. Optional upgrade: Acrylic disc PN 116041-502.

D8 Magnifying Lens -- Place lens (flat side onto lens disc) onto horizontal lens disc and

position it over the bottom-most number. This will line up with opening in doctor-side cover. Gently engage and lower doctorside cover onto the ophthalmoscope body assembly and magnifying lens. Make sure the lens is still aligned to fit into the hole in the doctor-side cover. Do not chip or scratch the magnifying lens.

D9 Base -- Install base. Temporarily engage the base set screw into the hole

in bottom of scope casting. Install light carrier retaining spring onto base retaining ring nut, and screw the ring nut into the base (use Welch Allyn wrench T-11896). Do not thread ring nut into the base if the set screw extends into the thread area. This will damage set screw and ring nut. Make sure the set screw will not interfere with the ring nut by first partially unscrewing the set screw. Then tighten the ring nut. Tighten set screw and inspect for burrs on set screw head. Install rubber hood.

D10 Light Carrier -- Clean lamp, lens. Install lamp into light carrier. Engage alignment

pin of lamp into groove of lamp socket. Slide condensing lens assembly over lamp. Insert light carrier into base of scope. Test.

End 11500 and 11511

E 11600 3.5 Volt Halogen Ophthalmoscope Disassembly:

E1 Bumper -- Pull corner, peel back.

E2 Back Cover -- Loosen retaining ring.

(Doctor-Side)

E3 2 Screws -- Remove 2 screws, (torx .05) separate halves. *SLP*

From the doctor-side cover, remove: Lens disc, center hub (metal) indexing spring, magnifying lens. (Early11600 models have separate glass lenses (23) in lens disc, and a glass magnifying lens.) Do not disassemble lens disc for cleaning.*SLP* Clean in ultrasonic bath. Optional upgrade: replace glass lens assembly with acrylic lens disc, new cover acrylic magnifying lens.

E4 Housing -- Separate housing from optical tube base assembly. (Patient-side)

E5 Lamp -- Pull lamp from bottom of optical tube.

**** 11600 Reassembly ****

E6 Cover -- Insert optical tube base assembly.

(Patient-side)

E7 Indexing Spring -- Place spring into position below bumper cut-out of doctor-side

cover. (Return bend on left side)

E8 Magnifying Lens -- Place lens into opening of body cover, round side down, flat

side facing you.

E9 Lens Disc Ass'y -- Clean disc. Check tightness of 3 small brass screws on disc.

Do not unscrew these 3 screws. Place disc in cover with number side down and engaged with detent. Place hub in center of lens disc (small pivot side up)

E10 Cover -- Place cover onto patient-side cover/optical tube base assembly.

(Doctor-Side) Tighten ring, screws. Install bumper.

E11 Lamp -- Align pin if lamp into groove of lamp socket and press lamp in.

Test.

End 11600

F 11605 3.5 Volt Halogen Ophthalmoscope Disassembly:

F1 Bumper -- Pull corner, peel back.

F2 Back Cover -- Loosen retaining ring.

(Doctor-Side)

F3 2 Screws -- Un-screw 2 screws, (torx .05) separate halves. *SLP*

Remove (from doctor-side cover): lens disc, indexing spring, magnifying lens retainer & lens.

F4 Housing -- Separate housing from optical tube base.

(Patient-Side) Assembly

F5 Lamp -- Pull lamp from bottom of optical tube.

**** 11605 Reassembly ****

F6 Cover -- Insert optical tube base assembly.

(Patient-Side)

F7 Indexing Spring -- Place spring into position below bumper cut-out of doctor-side

cover. (Return bend on left side).

F8 Magnifying Lens -- Place lens into opening of body cover, round side down, flat

side facing you.

F9 Lens Retainer -- Place lens retainer on top of lens.

F10 Lens Disc Ass'y. -- Clean disc. Place disc in cover. (Number side down, engaged

with detent)

F11 Cover -- Place cover onto patient-side cover/optical tube base assembly.

(Doctor-side) Tighten ring, screws. Install bumper.

F12 Lamp -- Align pin of lamp into groove of lamp socket and press lamp

in. Test.

End 11605

G 11610 3.5V Halogen Coaxial Sealed Ophthalmoscope Disassembly:

G1 Bumper -- Pull corner, peel back.

G2 Back Cover -- Loosen retaining ring.

(Doctor-Side)

G3 2 Screws -- Remove 2 screws, (torx 05) separate halves. *SLP*

Remove: lens disc, indexing spring, magnifying lens retainer & lens from doctor-side cover.

G4 Optical Tube -- Remove optical tube base, filter retainer, filter assembly.

Base Assembly *SLP*

G5 Lamp -- Pull lamp from bottom of optical tube.

**** 11610 Reassembly ****

G6 Ophthalmoscope -- Inspect filter over shiny metal surface and look through filterat its

Body Assembly own shadow. One side will show a ‘blue’ tint.Place tint side of (Patient-side) the filter will be towards the inside of the scope during

reassembly. (When using replacement filter, remove protective polyethylene film 2 sides). Insert filter into filter housing and place into ophthalmoscope body with filter housing finger tab towards bottom outside of scope. Insert filter retainer, & optical tube base assembly.

G7 Indexing Spring -- Place spring into position below bumper cut-out of doctor-side

cover. (Return bend on left side)

G8 Magnifying Lens -- Place lens into opening of body cover, round side down, flat

side facing you.

G9 Lens Retainer -- Place lens retainer on top of lens.

G10 Lens Disc Ass'y. -- Clean disc. Place disc in cover.

(Number side down, engaged with detent)

G11 Cover -- Place cover onto patient-side cover/optical tube base assembly.

(Doctor-side) Tighten ring, screws. Install bumper.

G12 Lamp -- Align pin of lamp into groove of lamp socket and press in.

Test.

End 11610

H 11620 3.5V Halogen Coaxial Sealed Ophthalmoscope Disassembly:

H1 Bumper -- Pull corner, peel back.

H2 Back Cover -- Loosen retaining ring.

(Doctor-Side)

H3 2 Screws -- Remove 2 screws, (torx 05) separate halves. *SLP*

Remove (from doctor-side cover): lens disc, indexing spring, indexing button, magnifying lens retainer & lens.

H4 Optical Tube -- Remove optical tube base, filter retainer, filter assembly.

Base Assembly *SLP*

H5 Lamp -- Pull lamp from bottom of optical tube.

**** 11620 Reassembly ****

H6 Ophthalmoscope -- Inspect filter over shiny metal surface and look through filter at

Body Assembly its own shadow. One side will show a ‘blue’ tint. Place tint side (Patient-side) of the filter will be towards the inside of the scope during

H7 Indexing Spring -- Place spring into position below bumper cut-out of doctor-side

cover.

H8 Indexing Button -- Place button into guides beneath spring. (Flat side to spring).

H9 Magnifying Lens -- Place lens into opening of body cover, round side down, flat

side facing you.

H10 Lens Retainer -- Place lens retainer on top of lens.

H11 Lens Disc Ass'y. -- Clean disc. Place disc in cover.

(Number side down, engaged with detent)

H12 Cover -- Place cover onto patient-side cover/optical tube base assembly ,

(Doctor-Side) tighten rin g, screws. Install bumper.

H13 Lamp -- Align pin of lamp into groove of lamp socket and press

lamp in. Test.

End 11620

I 11630 3.5 Volt Halogen Coaxial™ Ophthalmoscope(With Multiplier) Disassembly:

I-1 Bumper -- Pull corner, peel back.

I-2 Back Cover -- Loosen retaining ring. (Doctor-side)

I-3 2 Screws -- Remove 2 screws, (tprx 05) separate halves. *SLP*

Remove: lens disc, cam, multiplier disc, plastic spring detent.

I-4 Optical Tube -- Remove optical tube base, filter retainer, filter assembly.

Base assembly *SLP*

I-5 Lamp -- Pull lamp from bottom of optical tube.

**** 11630 Reassembly ****

I-6 Ophthalmoscope -- Inspect filter over shiny metal surface and look through filter Body Assembly at its own shadow. One side will show a ‘blue’ tint. Place tint

(Patient-side) side of the filter will be towards the inside of the scope during

I-7 Multiplier Disc -- Install multiplier disc, baffle side up, lenses at top of doctor-side

cover.

I-8 Cam -- Install cam on top of multiplier disc, slotted side up, hole of

cam engaged over pivot molded into cover.

I-9 Lens Disc Ass'y. -- Install lens disc, number side down, onto hub, with metal pin

away from cam ramp.

I-10 Spring Detent -- Place plastic spring detent into position below bumper cut-out

of doctor-side cover, smooth side up, detent bumps to engage both multiplier and lens disc.

I 11630 Ophthalmoscope Reassembly Continued

I-11 Cover -- Place cover/disc assembly onto patient-side cover/optical

(Doctor-Side) tube base assembly. Tighten ring, screws. Install bumper.

I-12 Lamp -- Align pin of lamp into groove of lamp socket and press lamp

in. Test.

End 11630

J1 Bumper -- Pull corner, peel back.

J2 Back Cover -- Loosen retaining ring.

J3 2 Screws -- Remove 2 screws, (torx 05) separate halves. *SLP*

J5 Lamp -- Pull lamp from bottom of optical tube.

J6 Ophthalmoscope -- Inspect filter over shiny metal surface and look through filter

11650 3.5 Volt Halogen Coaxial ™ Sealed Ophthalmoscope Disassembly:

(Doctor-side)

Remove (from doctor-side cover): lens disc, indexing spring, indexing button, magnifying lens retainer & lens.

Optical Tube Base -- Remove optical tube base, filter retainer, filter assembly.*SLP* Assembly

**** 11650 Reassembly ****

Body Assembly at its own shadow. One side will show a ‘blue’ tint. Place tint (Patient-side) side of the filter will be towards the inside of the scope during

reassembly. (When using replacement filter, remove protective polyethylene film 2 sides.) Insert filter into filter housing and place into ophthalmoscope body with filter housing finger tab towards bottom outside of scope. Insert filter retainer, & optical tube base assembly.

J7 Indexing Spring -- Place spring into position below bumper cut-out of doctor-side

cover.

J8 Indexing Button -- Place button, into guides beneath spring, flat side to spring.

J9 Magnifying Lens -- Place lens into opening of body cover, round side down, flat

side facing you.

J10 Lens Retainer -- Place lens retainer on top of lens.

J 11650 Ophthalmoscope Reassembly Continued

J11 Lens Disc Assy. -- Clean disc. Place disc on hub.

(Number side down, engaged with detent)

J12 Cover -- Place cover onto patient-side cover/optical tube base assembly.

(Doctor-side) Tighten ring, screws. Install bumper.

J13 Lamp -- Align pin of lamp into groove of lamp socket and press lamp

in. Test.

End11650

K 11660 3.5 Volt Halogen Coaxial™ Autostep Sealed Ophthalmoscope with Multiplier:

Disassembly and reassembly for the 11660 are the same as for the 11630 (as explained earlier on pages 11 and 12). Follow the same procedure but use the correct parts for the 11660.

Basic differences between the 11660 and the 11630 are as follows:

K1 The tube base assembly on the 11660 has a covered aperture assembly and the 11630

does not.

K2 The doctor side cover peep hole on the 11660 does not have a window and the 11630

does have a window.

End 11660

L 11710 3.5 Volt Halogen Sealed Ophthalmoscope:

Disassembly and reassembly of the 11710 are the same as for the 11720 as explained below. Follow the same procedure but use the correct parts for the model you are working on.

Basic differences between the 11710 and the 11720 are as follows:

L1 The 11710 does not have the slide switch/rack and pinion gear mechanism. Instead it has

a small square Welch Allyn logo in the place made for the slide switch button.

L2 The 11710 does not have aperture windows on either side of the instrument.

End 11710

M 11720 3.5 Volt Coaxial Sealed Ophthalmoscope Disassembly:

M1 Bumper -- Pull corner, peel back.

M2 Back Cover -- Loosen retaining ring.

(Doctor-side)

M3 2 Screws -- Remove 2 screws, (torx 05) and separate halves. *SLP*

Remove (from doctor-side cover): lens disc, indexing spring, indexing button, magnifying lens retainer & lens.

M4 Housing -- Separate housing from optical tube base assembly. *SLP*

(Patient-side)

M5 Switch, Gear, -- Remove individual components. *SLP*

Ball and Spring, Rack Assembly

M6 Lamp -- Pull lamp from bottom of optical tube.

**** 11720 Reassembly ****

M7 Switch, Gear -- Place spring in hole on right side ( base towards you), place

ball on top of spring. Put rack into position and place gear into engagement with rack. Center rack in housing. Put switch in slot of tool T-8118 and place switch over spring and ball in a centered position. Slide patient-side cover onto T-8118 at the switch slot and lower patient-side cover onto optical tube base assembly. Check that ball detent is properly engaged when switch is moved left and right.

M8 Indexing Spring -- Place spring into position below bumper cut-out of doctor-side

cover.

M9 Indexing Button -- Place button, into guides beneath spring, flat side to spring.

M10 Magnifying Lens -- Place lens into opening of body cover, round side down, flat

side facing you.

M11 Lens Retainer -- Place lens retainer on top of lens.

M 11720 Reassembly Continued

M12 Lens Disc Assy. -- Clean disc. Place disc on hub.

(Number side down, engaged with detent)

M13 Cover -- Place cover onto patient-side cover/optical tube base

(Doctor-side) assembly. Tighten ring, screws. Install bumper.

M14 Lamp -- Align pin of lamp into groove of lamp socket and press lamp

in. Test.

End 11720

N 11730 3.5 Volt Coaxial Autostep Sealed Ophthalmoscope (With Multiplier) Disassembly:

N1 Bumper -- Pull corner, peel back.

N2 Back Cover -- Loosen retaining ring.

(Doctor-Side)

N3 2 Screws -- Remove 2 screws, torx 05) and separate halves. *SLP*

Remove: lens disc, cam, multiplier disc, plastic spring detent.

N4 Housing -- Separate housing from optical tube base assembly. *SLP*

(Patient-side)

N5 Switch, Gear, -- Remove individual components. *SLP*

Ball and Spring, Rack Assembly

N6 Lamp -- Pull lamp from bottom of optical tube.

**** 11730 Reassembly ****

N7 Switch, G ear -- Place spring in hole on right side (base towards you), place

N8 Multiplier Disc -- Install multiplier disc, baffle side up, lenses at top of doctor-side

cover.

N9 Cam -- Place cam on top of multiplier disc, slotted side up, with the hole

of cam engaged over pivot molded into cover.

N10 Lens Disc Assy. -- Install the lens disc with the number side down, onto the hub,

with the metal pin facing away from the cam ramp.

N 11730 Reassembly Continued

N11 Spring Detent -- Place plastic spring detent into position below bumper cut-out

of doctor-side cover, smooth side up, detent bumps to engage both multiplier and lens disc.

N12 Cover -- Place cover/disc assembly onto patient-side cover/optical

(Doctor-Side) tube base assembly. Tighten ring, screws. Install bumper.

N13 Lamp -- Align pin of lamp into groove of lamp socket and press lamp

in. Test.

End 11730

O1 Lamp -- Pull lamp from bottom of optical tube.

O2 Bumper -- Pull corner, peel back.

O3 Cover Ass’y -- Loosen retaining ring.

O4 2 Screws -- Remove 2 screws, (use .050" hex key) remove cover assembly

12810, 12813, 12814, 12830 2.5 Volt Pocket Scope Ophthalmoscope Disassembly:

SPECIAL NOTE: The12810, 12813, 12814, and 12830 Ophthalmoscopes are similar in repair procedures with the exception of : Aperture combinations for the 12810-12814, and base thread construction for the 12830 export model.

(Doctor-side)

(doctor-side) *SLP*. Remove (from doctor-side cover): Lens disc, indexing spring (PN128013), lever, multiplier and magnifier link. (These last two items will be installed into the doctor side cover during reassembly. During disassembly,however, they usually fall off their respective pivots and lay on top of the aperture dial assembly.)

O5 Ophthalmoscope -- Remove N.D.(number dial) filter assembly. (On newer models,

Body Assembly this part will not have the small filter on top). Remove

aperture disc assembly, detent ball and indexing (coil) spring (116119), indexing spring (128024). Remove 2 screws holding lens holder assembly. Remove lens holder assembly and filter assembly.

**** Reassembly ****

O6 Ophthalmoscope -- Insert optical tube base assembly into ophthalmoscope body.

Body Assembly Inspect filter over shiny metal surface and look through filter at

its own shadow. One side will show a‘blue’ tint. Place tint side of the filter towards the inside of the scope during reassembly. (When using new replacement filter, remove protective polyethylene films 2 sides) insert filter into filter housing and place into ophthalmoscope body with filter housing finger tab towards top of the scope. Place lens holder assembly into position and fasten with 2 screws. Place indexing spring (128024) onto raised anchor. Round end of indexing spring should face hub. Aperture disc assembly onto hub, hole in disc at top, apertures at bottom. Insert indexing spring (coil spring PN 116119) into hole and place ball bearing on top of it. Place N.D. filter assembly on top of the center of the aperture disc assembly with filter assembly pivot in hole at base.

O 12810, 12813, 12814, 12830 2.5 Volt Pocket Scope Ophthalmoscope Disassembly Cont'd

O7 Cover Assembly -- Place lever into position in the ( - ) negative with magnifier lens

(Doctor-Side) position, ( - ) side. Place indexing spring (128013) over lever and

onto the raised anchor. (Rounded end of indexing spring should face the lens disc assembly hub as shown in repair parts diagram).

O8 Lens Disc Assy. -- Clean disc. Place disc on hub.

(Number side down, engaged with detent)

O9 Multiplier -- Place multiplier on top of lens disc, engaged with hub, pivot

facing up, and lenses at the top of the assembly (as shown in the repair parts diagram). Connect multiplier to lever with magnifier link, thick end of link towards the magnifier, and with the curved side towards the hub as shown in the parts diagram.

O10 Cover Ass’y -- Place cover onto ophthalmoscope body assembly. Place ring

(Doctor-Side) onto base with numbers “128” right-side-up. Tighten ring,

screws.Install bumper.

O11 Lamp -- Align pin of lamp into groove of lamp socket and press lamp

in. Test.

End 12810, 12813, 12814, 12830

APPENDIX 1

TOOLS/MATERIALS/SUPPLIES

OPHTHALMOSCOPE: 11110, 11400, 11411, 11470, 11475, 11500, 11511, 11600, 11605,

11610, 11620, 11630, 11650, 11660, 11710, 11720, 11730, 12810, 12813, 12814, 12830.

Bayonet Pliers (For removing lamps) Welch Allyn T-10802 Strap Wrench Welch Allyn T-10913 Ring-Nut Wrench (‘TEE’Handle) Welch Allyn T-11896 Switch Tool Welch Allyn T-8118 T5 Torx Flag Style WHA #30-13 Torx ™ Bit # 440-TX-05 or Torx Screwdriver (Torx .05) Replaceable-Bit 1/4" Driver (APEX M-1505-P)For use with Torx .05 bit Tweezers ( Grobet Peer #7 Stainless Steel ) 12" X 12" (approximately) Foam Pad (Mouse Mar American Covers Inc.) Windex ™ Glass Cleaner or Vestal Glass Cleaner #8618-21 Lint Free Wipes / Swabs Jewelers Screwdriver With 1/16" Flat Blade Small Ultasonic Bath ie:* Pro-Craft Model 23.577-1 Ultra Sonic Bath Cleaning Solution Miller Stephenson Aero-Duster #MS-222 De-Ionized Water. Small Stainless Steel Tubs (1 QT. Capacity or less)

One each of the following items: Taps are used to clean up threads or open the hole up to the next size where permissible.

TAP/DRILL/KEY: TAP DRILL KEY

2-56 #50 (.0700") .035" 3-48 #47 (.0785") .050" 4-40 #43 (.0890") .050"

APPENDIX 2

Inspections for Repaired Ophthalmoscopes:

1. Operate all slide switches.

2. Rotate knobs and discs to determine whether or not detents are operating correctly and operating smoothly, positively, and through full stroke.

3. View through the scope to determine that the aperture, filter, or lens are correctly aligned through each detent position.

4. Inspect the cleanliness and condition of the lens dial. No scratches, dirt, glue, or any material should be visible.

5. Check the illuminated and non-illuminated numbers on the lens dial. They should be in the center of the aperture.

6. Check projected images for shadows, dirt, and filament images using the aperture dial and the slide switch if so equipped.

7. Check windows for cracks, streaks, spots or anything that would obscure the viewed image.

8. Check for any stray light that interferes with looking through the scope. Project a fixation spot into a darkened box. Look through the peephole with a lens setting of ‘0’. There should be no bright streaks in the image, or any light appearing in the dark area surrounding the projected spot.

9. Check the scope for scratches or physical damage before the repair as well as after.

10. Clean the repaired scope and wrap it in a plastic bag to protect it from dust and fingerprint contamination.

APPENDIX 3

Checklist for:

F inal Inspection of Ophthalmoscopes

Ophthalmoscope Checklist: Ref#: Model:

1. [] Bumper in place A02387 (V1)* all

2. [] Retaining ring up (body&cover) all

3. [] Lens disc turns freely A02121 all

4. [] Leave lens disc assy on ‘0’ all

5. [] Lever does not jump 12810

6. [] Lamp makes contact w/ handle all

7. [] Numbers readable on lens disc A02121 all

8. [] No cracks in cello when illuminated 116 & 115

9. [] No glare with filters A02387 (V8)** all w/filter

10.[] Filter window is secure A02787 (V8) 11720 & 30

11.[] Retainer secure in mirror assembly all

12.[] Filter assy. not catching on mirror all w/mirror

13.[] Lens clarity A02121 all

14.[] Aperture turns freely all

15.[] Aperture on large circle all

16.[] Filter window open all

* V1=visual measurement (repair operator judgement) ** V8=remove from fixture or handle and apply General Electric RTV #108 to adjustment hole.

(clear translucent silicone sealant, WA M#30313).

APPENDIX 4

Troubleshooting Ophthalmoscopes

Model #'s: 11400,11411, 11610, 11620,11630, 11650,11660

Problem

Dirty

Optics

Obstruction in viewing area

Apart

Glare ‘Reflection of extra light seen a) mirror through Oph. with filter down.”

VOTE: Plastic lenses [objective lens and filter) scratch easily. To clean, use a soft lens paper and or cotton swab.

Normal use

Heavy dirt or scratch on lens disc.

Filter Assembly:

discolored

scratched

fingerprinted

c) Mirror hood bent up

Insert pulled out from overtightning of screws.

User disassembled.

Dirt or scratches on:

b) filter

objective lens

Cause

Clean optics but do not use alcohol on 116 series.

Replace lens disc.

Replace filter assembly. Replace filter assembly. Clean

Replace mirror. Replace body set.

Replace missing or damaged parts and reassemble.

Clean parts if dirty. Replace if scratched.

Corrective Action

Shadows on light spot

Dirty Optics

Lamp filament asymmetrical.

Lamp envelope dirty.

Loose condensing lens or

retaining ring. Condensed lens

tipped.

Scratch or chip

Objective lens loose

Wrong lamp

Clean

Turn lamp around to opposite slot in sleeve or replace if this does not remove shadows.

Clean with soft cloth.

Check lens (tap with small needle and check for movement if loose). Press down to tighten. Lens should

be flat. center”.

Replace condensing lens on condensing lens.

Remove retaining ring from mirror mount and reset. (Refer to mirror assembly procedure).

Replace with correct lamp.

tilted it will project light “off

APPENDIX 4 continued....

Troubleshooting Ophthalmoscopes

MODEL #:

11400,11411,11610 11620,11630,11650,11660

Problem

Numbers ens assembly.

Broken mirror

Will not focus

Intermittent light output

not readable on

light

Cause

Alcohol damage (improper cleaning)

Lamp problem a) pin off-jammed in sleeve, not pinned correctly b) blown or gray c) shadow d) wrong

Dropped

Customer tampered with Ophth.

Mirror or hood unglued Alcohol damage (alcohol will discolor

mirror and lenses)

Objective lens loose.

Lens carrier out of position

Loose connection with power source

envelope will appear white

bent filament

lamp/

not Welch Allyn lamp

Corrective Action

Replace magnifier lens disc (clean with

Vestal cleaner or window cleaner)

Replace lamp

Turn lamp in sleeve or replace lamp. Replace with correct Welch Allyn lamp.

Replace mirror

Replace mirror, lenses

Remove from mirror and reset.

Adjust lens carrier (Refer to adjustable mirror assembly instructions)

Check base/handle. ( See problem

below)

Loose condensing or objective lens

Wrong lamp

Poor connection with power source.

Lens assembly sticks or drags (friction) a) rubs on body

NOTE:

When changing new style cover from the old style (index spring to new spring and

Optical tube base:

a) worn (loose fit)

b) bent (tight fit) c) misaligned optic sleeve or lamp

Aperture dial:

b) ball bearing rotation stiff

Lens disc assembly: a) warped

b) 11630 lens:

1) film warped or pin not engaging

in cam properly.

2) multiplier disc baffle warped

3) not cleaned properlly.

Inspect and secure

Replace with correct Welch Allyn lamp Replace base

(a)

(b)

Remove and realign

Shave cut out area in cover (body) slightly.

Ream bearing hole in base. Apply

small dot of molykote 33 grease.

Replace lens disc. b-l, b-2, b-3

multiplier, or cam. (Visually check for

warp. It is not easily detected).

button), be sure to exchange old style filter retainer ( different design

in stiff rotation of lens assembly.

..__

Replace lens disc,

)

Failure to do so will result

APPENDIX 4 continued. . .

Troubleshooting Ophthalmoscopes

MODEL #:

Problem

Mirror

unglued, broken

scratched

Glare

Lever sticks. Lever moves by itself when

ens assembly is rotated. Poor focus

12810 (PocketScope)

Mirror adheres to RTV during disassembly.

Cracked (Ophth dropped)

Cleaned improperly. Film on mirror filter or lenses caused

by improper cleaning.

Dirty optics. Cover Assy warped.

Multiplier catches edge of lens disc.

Dirty optics Objective lens

Cause

Corrective Action

Remove mirror from lens older and replace with new body/mirror assembly.

Replace body with mirror assemlby or filter.

Clean with window cleaner. Replace cover.

Replace disc or multiplier.

Clean lenses (no alcohol)

Place open aperture hole over lens area, adjust focus, re-seal with G.E. 108 RTV objective with RTV. Make flush so that turning aperture does not interfere).

M30313 (surround peg on

Intermittent or no light

Loose filter window or

polarized) filter catching.

NOTE: For “shadow in ‘light circle", be sure filter is completely open or closed. Check

that lamp is in sleeve

lightly.

Loose

film on numeral

lluminator

Bulb blown. Retainer not on tight.

Loose sleeve.

Minor unglued from body.

Poor connection with power source. Rubber tube worn.

Glue failure

Replace bulb.

Tighten retainer with strap wrench.

Tighten screw on back of optical base (be sure sleeves is aligned).

Replace body-withmirror assembly.

Check with known good handle.

Replace rubber tube.

Replace with new illuminator. (New style has no film).

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