Park Air Systems BM7X 50W Transceiver User Manual M7

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Document ID	898361
Application ID	m2JiT7aZ0MrP/TaUlkQC4w==
Document Description	User manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	279.13kB (3489074 bits)
Date Submitted	2008-02-04 00:00:00
Date Available	2008-02-04 00:00:00
Creation Date	2008-01-15 09:43:53
Producing Software	Acrobat Distiller 7.0 (Windows)
Document Lastmod	2008-01-15 09:44:05
Document Title	M7.book
Document Creator	FrameMaker 7.2
Document Author:	DAVES

Back to Menu
Fig 5-21 Thermal Pad Removal
Fig 5-22 RF PA Thermal Pad Position
M7X and M7R
Page 5-31
Maintenance
Back to Menu
Refitting the RF PA
To refit the RF PA into the radio:
(1)
After ensuring all surfaces are clean, fit a new thermal pad to the RF PA as shown in Fig 5-22.
The thermal pad is naturally adhesive and is supplied with a protective film on both sides.
Partially remove the protective film from one end and carefully position the pad before removing
the film completely. As the film is being removed, ensure no air bubbles are trapped between the
PSU surface and the film.
(2)
After the protective film has been removed from both sides of the thermal pad, carefully place the
RF PA in position.
(3)
Using a Torx T15 screwdriver secure the RF PA using seven screws and associated wavy
washers as shown in Fig 5-19.
(4)
Looking from the rear of the radio, identify the RF PA 3-way power connector as shown in
Fig 5-20. Make the in-line connection.
(5)
Looking from the rear of the radio, identify the ribbon cable that connects from the RF PA module
to a chassis mounted connector as shown in Fig 5-20. Connect the ribbon cable from the RF PA
to the chassis connector.
(6)
At the RF PA, connect the coaxial cables listed in Table 5-5.
(7)
Identify the RF PA cover, shown in Fig 5-18. Refit the cover using the 26 securing screws (part
number 36T46330060).
(8)
Refit the Interface module as detailed on page 5-26.
(9)
Refit the radio’s top cover as detailed on page 5-12.
(10) Connect the radio to a PC using the Lemo to USB cable.
(11) Reapply input power to the radio.
(12) Refer to page page 47 and complete the procedure ‘Setting the Carrier Power Trim’
(13) Disconnect the Lemo to USB cable and restore the radio ready for operational use.
M7X and M7R
Page 5-32
Maintenance
Back to Menu
Replacing the PSU Module
WARNING
Dangerous Voltage
Ensure the input ac and dc supplies to the radio are disconnected before removing the top
cover.
WARNING
Dangerous Voltage
Do not remove the radio’s top cover for at least one minute after switching off the radio.
Caution
ESDs
This equipment contains devices sensitive to electrostatic discharge. Precautions applicable
to handling such equipment, including wearing a static protection wrist strap connected to
earth, should always be taken.
PSU Module
The PSU module, shown in Fig 5-23, is supplied complete with three cables attached. A thermal pad is
also supplied with the module.
Ribbon Cable; connection shown in Fig 5-25
Two-wire power connector;
connection shown in Fig 5-24
Three-wire RF PA power connector;
connection shown in Fig 5-20
Fig 5-23 PSU Module
M7X and M7R
Page 5-33
Maintenance
Back to Menu
Removing the PSU Module
To remove the PSU:
(1)
Remove the radio’s top cover as detailed on page 5-12.
(2)
Remove the Interface module as detailed on page 5-26.
(3)
Refer to Fig 5-20 and identify the RF PA In-Line power connector. Separate the in-line
connection.
(4)
Refer to Fig 5-24 and identify the two-wire power connector. Disconnect the free socket from the
chassis plug.
Two-Wire
Power
Connector
Interface
Module
Socket
PSU
Module
Fig 5-24 Two-Wire Power Connector
(5)
Refer to Fig 5-25 and identify the PSU ribbon cable. Disconnect the cable from the chassis
connector.
Ribbon Cable
Interface
Module
Socket
PSU
Module
Fig 5-25 PSU Ribbon Cable
(6)
Turn the radio upside down and remove the bottom cover as detailed on page 5-12.
M7X and M7R
Page 5-34
Maintenance
Back to Menu
(7)
Using a Torx T10 screwdriver, remove and retain the ten M3 x 6 mm screws (part number
36T46330060) that secure the PSU cover shown in Fig 5-26. Remove the cover.
PSU Cover
Secured by M3 x 6mm countersunk screws (10 off)
Fig 5-26 PSU Module Cover
(8)
Using a Torx T15 screwdriver, remove and retain the four M4 x 6 mm screws (shown in Fig 5-27)
that secure the PSU module to the chassis.
(9)
Remove the PSU from the radio as follows:
‰
Standing at the front of the radio, pivot the front of the PSU module upwards until the two
fan connections (at the rear of the radio) can be seen and accessed
‰
Disconnect the two fan leads from the module
‰
Remove the PSU module from the radio.
(10) A thermal pad is fitted between the PSU module and the chassis (which is a heatsink). The old
thermal pad should now be removed by peeling it off (see Fig 5-21).
M7X and M7R
Page 5-35
Maintenance
Back to Menu
PSU module is secured by four
M4 x 6 mm screws located as
shown by the arrows.
Fig 5-27 PSU Module Showing Securing Screws
Refitting the PSU Module
To refit the PSU module into the radio:
(1)
After ensuring all surfaces are clean, fit a new thermal pad to the PSU as shown in Fig 5-28. The
thermal pad is naturally adhesive and is supplied with a protective film on both sides. Partially
remove the protective film from one end and carefully position the pad before removing the film
completely. As the film is being removed, ensure no air bubbles are trapped between the PSU
surface and the film.
(2)
Being careful not to damage the thermal pad, hold the PSU module so that the leads from the
two rear panel fans can be connected.
(3)
Connect the two fans and then place the PSU module in position and, using a Torx T15
screwdriver, secure with four M4 x 6 mm screws (Fig 5-27).
(4)
Fit the PSU cover and secure using ten M3 x 6 mm screws (Fig 5-26).
(5)
Refer to page 5-12 and refit the radio’s bottom cover.
M7X and M7R
Page 5-36
Maintenance

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