Hubbell GAI-TRONICS 701-804 Manual Download Page 8

Pub.  42004-605L2B

Model 701-804 SmartSeries

®

 Handset Station with Auxiliary Jack

Page:  8 of 16

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03/04

How to Diagnose Assembly Faults

The table below describes possible solutions for some common problems.

Problem

Possible Solution

Any problem with
station performance

Remove the assembly from the enclosure and examine it carefully for
obvious faults such as unconnected plugs, loose connections where the wires
from the handset and hookswitch connect to the Handset Amplifier PCBA,
and so on.  Determine whether the fault is in the assembly, or in the system,
by plugging in a known good spare assembly (set to the same address as the
assembly removed).  If the fault is in the assembly, remove it for repair.

Note

: When replacing the assembly, perform the following steps:

1.

 

Set the address on the new assembly to 03.

2.

 

Plug the assembly into the enclosure.

3.

 

After about 10 seconds, remove the assembly.  The station is now set up
to request a download of configuration variables from the Master
Control Unit (MCU).

4.

 

Set the address to the correct address.

5.

 

Plug the assembly back into the enclosure.  The station initiates a
configuration download request.  The time required to complete the
download depends upon system configuration and system activity, but
several seconds is typical.

Speaker volume needs
adjustment

Use the 

USER ADJ

 control to adjust the Minimum Level, Offset Level, or

VLC Level (as appropriate).  Refer to the Adjustments section of this
document.

Incoming handset
speech level needs
adjustment

Use the 

RCVR VOL 

control to adjust the handset receiver volume.  Refer to

the Adjustments section of this document.

Incoming headset
speech level needs
adjustment

Use the 

AUX VOL

 control to adjust the headset receiver volume.  Refer to

the Adjustments section of this document.

Outgoing speech level
is too low for other
users

Use the 

XMIT LEVEL 

control to adjust the audio transmit level.  Refer to

the Adjustments section of this document.

Acoustic feedback or
speech distortion
during page or party
operation

or

The user hears himself
when speaking

 

If the problem affects all stations, the line may not be terminated
correctly, may have loose connections, or a short to ground.  Line
balance connections are critical.

 

If the problem affects only this assembly, the problem may be with its
sidetone setting.  Contact GAI-Tronics’ Field Service Department.

Summary of Contents for GAI-TRONICS 701-804

Page 1: ...eral Information In addition to providing standard Page Party operation the Model 701 804 SmartSeries Handset Speaker Amplifier with Auxiliary Jack supports the attachment of an auxiliary headset and...

Page 2: ...When the handset is lifted from the cradle or replaced in the cradle a hookswitch a magnetic reed switch in the cradle signals the appropriate status to the micro controller within the assembly To th...

Page 3: ...2b doc 03 04 InternalComponents The Model 701 804 contains the following components or subassemblies in the chassis that is affixed to the front panel Refer to Figure 2 Ref 1 Bias Power Supply PCBA Re...

Page 4: ...he Receiver Isolation PCBA via J2 Interfaces The assembly interfaces to the system cable an external loudspeaker and auxiliary devices via P1 a 16 pin connector All connections to the system cable are...

Page 5: ...pplication requires the GAI Tronics Model 10401 201 Headset Microphone Assembly and Model 10416 103 Extension Cable The auxiliary headset allows the user to make one way page announcements and conduct...

Page 6: ...ate party line 2 Plug the auxiliary headset cable assembly into the auxiliary jack on the front panel 3 Conduct your conversation When you are done unplug the auxiliary headset cable assembly Optional...

Page 7: ...e length of time the handset headset can be off hook before disabling party line communication Default setting 8 minutes Page Duration Limit the length of time the station can be in page mode before r...

Page 8: ...rrect address 5 Plug the assembly back into the enclosure The station initiates a configuration download request The time required to complete the download depends upon system configuration and system...

Page 9: ...imes the watchdog timer has reset the processor Cause The watchdog timer has forced the processor to reset This occurs when the reset pins J4 on the Base 16 PCBA are temporarily shorted or when the wa...

Page 10: ...room Effect The station continues measuring speaker ambient noise When acceptable noise levels are subsequently measured a restore message is sent to the MCU Verify that the speaker wire is connected...

Page 11: ...3 Remove corrosion from terminals There are two replaceable fuses used in the assembly Both are mounted on the Base 16 PCBA as shown in Figure 4 and both limit the amount of current from the 120 V ac...

Page 12: ...not remove the 2 screws that secure the nameplate 2 Pivot the nameplate counterclockwise exposing the access hole A guide located behind the access hole helps to direct the screwdriver to the USER AD...

Page 13: ...ed stable for five seconds the station returns to its normal operating mode VLC Level The VLC Level adjustment sets the speaker amplifier gain for the Page Priority VLC feature to provide an emergency...

Page 14: ...d RCVR VOL Ref 2 on the Handset Amplifier PCBA to adjust to the desired level the handset receiver volume for voice signals from a party line Auxiliary Receiver Volume Use the Auxiliary Receiver Volum...

Page 15: ...Volume Monitor range low gain 62 to 100 dB SPL Offset above ambient User Level Adjustment 0 to 49 dB Minimum User Level Adjustment Off 85 to 125 dB SPL Handset Amplifier Output 1 5 VRMS nominal into 3...

Page 16: ...Nameplate Kit 12530 001 Transformer Connector Subassembly 12555 001 FSK PCBA Kit 12557 001 Base 16 PCBA Kit 12558 001 Power Supply PCBA Kit 13204 002 Receiver Cap 51008 003 Pressbar Switch 69072 001 A...

Page 17: ...be Buyer s sole and exclusive remedy and in no event shall GAI Tronics warranty obligations with respect to services exceed 100 of the total cost of services provided hereunder Warranty Periods Every...

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