PFX ANR Headset
“
Product Information
Specifications:
- Model: PFX
- Part Numbers: 939-00004-000 Rev A
- Headset Compatibility: ZULU PFX (GA), ZULU PFX, P, ZULU PFX,
H
Product Usage Instructions
1. Purpose:
This guide simplifies the troubleshooting and repair process by
providing two options for users:
- Isolate by Part: Quickly identify failed part
using known good Sample Parts. - Isolate by Symptom Failure: Use possible
failure modes to pinpoint the most likely part.
2. Troubleshooting Aids:
Before You Start:
- Review and familiarize yourself with the guide entirely before
attempting repair. - Review FAQs on the Lightspeed Aviation
website. - Locate the appropriate repair manual via the Lightspeed
Aviation website. - Find the suitable part removal/replacement video instruction
via the Lightspeed
Aviation website.
3. Headset Part Numbers:
Contact Lightspeed Aviation directly for any unknown or unlisted
part numbers or different plug types.
4. Parts Lists:
a. Parts to be replaced as an assembly:
- Ear Seal, Premium Battery Box, Battery
- Mic Boom Assembly, etc.
b. Parts that can be replaced as an assembly or
individual parts:
- Foam, Banana, Right/Left
- WINDSCREEN, MIC
- PCBA Upper/Lower, PFX, etc.
Frequently Asked Questions (FAQ):
Q: How can I determine if my Tango headset qualifies for
warranty repair?
A: Contact Lightspeed Aviation at 1-800-332-2421 to check if
your Tango headset qualifies for warranty repair.
Q: Where can I find additional support for
troubleshooting?
A: Visit the Lightspeed Aviation website at
https://www.lightspeedaviation.com/support/ for FAQs and
troubleshooting guides.
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Lightspeed Aviation Service Repair Manual
Models: PFX
939-00004-000 Rev A
Page 1
Table of Contents
Title Page………………………………………………… Table of Contents…………………………………………. Before You Start ………………………………………….. Headset Part Number, PFX……………………………….. Parts List, Assembly or Sub-Components…………… Failure Validation…………………………………………. Isolate by Part………………………………………………. Isolate by Symptom ………………………………………
Page 1 Page 2 Page 4 Page 5 Page 6 Page 9 Page 10 Page 11
939-00004-000 Rev A
Page 2
1. PURPOSE
This guide is designed to simplify troubleshooting/repair process and provides two options for the user to utilize during the process. – Isolate by Part: Method to quickly identify failed part via use of “known good Sample Parts” – Isolate by Symptom Failure: Method using possible failure modes to pinpoint most likely part
2. SCOPE
· PFX models
3. TROUBLESHOOTING AIDS
· FAQ per Lightspeed Aviation website (https://www.lightspeedaviation.com/support/) · Part Removal/Replacement Video Step by Step guide of product disassembly and re-assembly · Audio device with 3.5mm output (eg am/fm radio, mobile device, etc…) · Audio device with BT capability (eg am/fm radio, mobile device, etc…) · Com Panel/COM Radio or access to aircraft with Com Panel/Radio (GA, Lemo, U-174 ports depending on headset)
Available on the open market
939-00004-000 Rev A
Page 3
Before You Start
1. CONTACT LIGHTSPEED AVIATION SERVICE DEPARTMENT TO DETERMINE IF YOUR SIERRA HEADSET QUALIFIES FOR WARRANTY REPAIR OR TRADE-UP PROGRAM · Toll free: 1-800-332-2421 (Monday-Friday, 7am – 4pm Pacific Time) · Email: support@lightspeedaviation.com
2. REVIEW AND FAMILIARIZE YOURSELF WITH THE GUIDE IN ITS ENTIRETY BEFORE ATTEMPTING REPAIR
3. REVIEW FAQS FOUND ON LIGHTSPEED AVIATION WEBSITE (https://www.lightspeedaviation.com/support/)
4. LOCATE APPROPRIATE REPAIR MANUAL via LIGHTSPEED AVIATION WEBSITE (https://www.lightspeedaviation.com/otherpolicies/)
5. LOCATE APPROPRIATE PART REMOVAL/REPLACEMENT VIDEO INSTRUCTION via LIGHTSPEED AVIATION WEBSITE (https://www.lightspeedaviation.com/other-policies/)
6. PART AVAILABILITY AND COST ARE UPDATED FREQUENTLY. PLEASE CHECK LIGHTSPEED AVIATION WEBSITE (https://www.lightspeedaviation.com/other-policies/) FOR THE LATEST INFORMATION OR CONTACT LIGHTSPEED AVIATION SERVICE DEPARTMENT · Toll free: 1-800-332-2421 (Monday-Friday, 7am – 4pm Pacific Time) · Email: support@lightspeedaviation.com
939-00004-000 Rev A
Page 4
Headset Part Numbers
APPLICABLE PART NUMBERS PFX:
Note: Contact Lightspeed Aviation directly if the part number is unknown, not listed, or has different plug types than listed
Model Item Number Part Number Description
PFX
4034
800-00011-001 ASSY, HEADSET, ZULU PFX (GA)
PFX
4035
800-00011-002 ASSY, HEADSET, ZULU PFX, P
PFX
4039
800-00011-003 ASSY, HEADSET, ZULU PFX, H
NOTE: CHECK WITH LIGHTSPEED AVIATION TO DETERMINE IF YOUR TANGO HEADSET QUALIFIES FOR WARRANTY REPAIR (Toll free: 1-800-332-2421)
GA = General Aviation plugs P = Panel Power (6-pin LEMO connector) H = U-174 lower (Heli plug)
939-00004-000 Rev A
Page 5
Parts List
REPLACEABLE PARTS ASSEMBLY/PART:
a. Below parts must be replaced as an assembly
Part Number
Description
250-00052-000 285-00012-000
Ear Seal, Premium Battery Box, Battery
285-00034-000 285-00035-000 285-00024-000 285-00025-000 285-00056-000 285-00063-000
Mic Boom Assembly Headband Assy w/ Boards Ear Cup Assy, Left w/o mic Ear Cup Assy, Right Sub-Assy, Control Box Bottom, Battery Volume Slider Kit
939-00004-000 Rev A
Page 6
Parts List
REPLACEABLE PARTS ASSEMBLY OR SUB-COMPONENTS:
a. Below parts can be replaced as an assembly or its individual parts
000000635 000000722 000001524
200-00025-000 200-00025-001 200-00026-000 250-00040-100
250-00054-000 285-00036-000
285-00039-000 285-00040-000 285-00050-000 300-00015-000 300-00017-000 300-00018-000 300-00019-000 303-00057-100 303-00058-100 303-00120-000 303-00121-000 303-00193-000
Description
Foam, Banana, Right Foam, Banana, Left WINDSCREEN, MIC
PCBA, Upper, PFX PCBA, Upper, PFX Panel PCBA, Lower, PFX Battery Box Top
Head Pad – Standard Battery Box Bottom
Left Assembly/Speaker plates Right Assembly/Speaker plates Battery Box Bottom, Panel Cable, Lower, Dual GA Cable, Upper, Straight Cable, Lower, Panel Cable, Lower, U-174 Slider Clamp Top Slider Clamp Bottom Headband Slider A, Painted Headband Slider B, Painted Headband Clamp Top
939-00004-000 Rev A
Page 7
Parts List
REPLACEABLE PARTS ASSEMBLY OR SUB-COMPONENTS (CONTINUED):
a. Below parts can be replaced as an assembly or its individual parts
303-00194-000 304-00010-000 304-00011-000
305-00001-000 315-00050-000
Description
Headband Clamp Bottom Label PFX Battery Label PFX Panel Head Pad – Tall Shim, Battery Contact
939-00004-000 Rev A
Page 8
FAILURE VALIDATION:
Troubleshooting Guide
1. Validate/duplicate failure complaint using 1. Customer set-up 2. LSA set-up a. No Problem Found? · Check with customer to ensure appropriate information for duplication. Retest as needed · Document test method, Retest. b. Confirmed? · Proceed to step 2.
2. Ensure fresh batteries or known good panel power source as appropriate for control module
3. Retest a. Failure Resolved? a. Problem likely bad batteries or panel power source. b. Failure Continues? a. Update Firmware using Utility
4. Retest a. Failure continues? a. Isolate by Part b. Isolate by Symptom
939-00004-000 Rev A
Page 9
Troubleshooting Guide By Part
Isolate by Part: Note: If failure is related to Side Tone (Boom Mic) Go to step 3, otherwise proceed with step 1.
1. Open Left Earcup and unplug Control Module assembly (Upper Cable/Control Module/Lower Cable), connect Golden Control Module assembly. Retest. a. failure resolved? Isolate down to cables or control module replacing each and reconnect until faulty part found and replace. Note: move the cable around strain relief areas to facilitate pinpointing of faulty part. b. failure continues? Go to step 2
2. Connect Original Control Module to Golden Headband Assembly (headband/faceplates) a. failure resolved? Open Original headband Left/Right Cup and check PCBA, wiring, reseat and re-assemble. b. failure continues? Isolate failure to left or right faceplate, replace, then retest.
3. Disconnect Boom MIC and test with golden Boom MIC. a. failure resolved? Replace Boom Mic with known good/tested Boom Mic. b. failure continues? Restart at Step #1
Component Replaced
Control Module / sub-components Headband assembly Boom Mic Left or Right Faceplate
939-00004-000 Rev A
Assembly Reference
· PFX PART REMOVAL/REPLACEMENT VIDEOs · PFX PART REMOVAL/REPLACEMENT VIDEOs · PFX PART REMOVAL/REPLACEMENT VIDEOs · PFX PART REMOVAL/REPLACEMENT VIDEOs
Page 10
Troubleshooting Guide By Symptom/Failure
#
Symptom/Failure
Repair Action
References
1
Noise Headset powered on (ANR)
2
ANR Won’t Update (adaptive ANR)
3 Bluetooth
No Comm Audio/Distorted Comm Audio 4
1. Listen to headset and: Shake head, push on cups, open/close mouth 2. Replace Left, Right faceplates if there is abnormal noise on that side
1. If White noise, Replace the Lower PCBA (200-00026-000)
1. Turn on headset and listen to engine noise at about 80dB 1. Ensure that the upper cable connectors are fully seated 2. Replace Lower PCBA 3. Replace Headset Assembly
1. If headset will not pair with any device or Audio is Missing 1. Try to connect to headset with device (iPad)
2. Disconnect/ try reconnecting device with Bluetooth 3. Replace Upper PCBA (200-00025-00X)
1. Perform test while headset powered on and off 2. Visually inspect cabling for wear or defects. 3. Plug headset into comm. panel. 4. Pull and bend Lower cable along length of wires and strain reliefs while
listening to headset 1. If audio is intermittent, replace Lower cable
5. If no change, Pull and bend Upper cable along length of wires and strain reliefs while listening to headset 1. If audio is intermittent, replace Upper cable
· PFX PART REMOVAL/REPLACEMENT VIDEOs
· PFX PART REMOVAL/REPLACEMENT VIDEOs
· PFX PART REMOVAL/REPLACEMENT VIDEOs
· PFX PART REMOVAL/REPLACEMENT VIDEOs
939-00004-000 Rev A
Page 11
Troubleshooting Guide By Symptom/Failure
#
Symptom/Failure
Repair Action
References
5 No Mic Audio
6 No Auxiliary Audio 7 No Power
1. Plug headset into comm. panel. 1. If possible, turn squelch setting down to `hot mic’
2. Rock and bend Boom mic, tap on mic while listening 1. If audio is intermittent, replace boom mic assembly
3. Visually inspect cabling for wear or defects 4. Pull and bend Lower cable along length of wires and strain reliefs while
listening to headset 1. If audio is intermittent, replace Lower cable
5. If no change, Pull and bend Upper cable along length of wires and strain reliefs while listening to headset 1. If audio is intermittent, replace Upper cable
1. Play sound through Auxiliary patch cord into headset. 2. Rock cord back and forth while listening to headset
1. If music cuts in/out or is distorted 1. Retest with different patch cord. 2. Replace the Lower PCBA (200-00026-000)
1. Confirm Batteries are good. 2. Visually inspect cabling for wear or defects (panel power) 3. Replace Upper PCBA (200-00025-00X)
· PFX PART REMOVAL/REPLACEMENT VIDEOs
· PFX PART REMOVAL/REPLACEMENT VIDEOs
· PFX PART REMOVAL/REPLACEMENT VIDEOs
939-00004-000 Rev A
Page 12
Documents / Resources
 |
Lightspeed PFX ANR Headset [pdf] User Guide 4034, 4035, 4039, PFX ANR Headset, PFX ANR Headset, Headset |