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11. LCD ASSEMBLY REPLACEMENT

This procedure provides instructions for removing and re-

placing the Liquid Crystal Display (LCD) once the front

panel assembly has been separated from the Site Master.

1.

Remove the front panel assembly as directed in sec-

tion 10.

2.

Place the front panel assembly face down on a pro-

tected work surface.

3.

Remove the 14 Phillips screws that attach the back-

ing plate to the front panel assembly.

4.

Release the LCD display cable from the retaining

clip on the front panel backing plate.

5.

Remove the front panel backing plate, carefully

feeding the LCD cable through the access hole to

avoid damage to the cable or connector.

6.

Remove the rubber cushion pad from the LCD as-

sembly and remove the assembly.

7.

Reverse the above steps to install the replacement

assembly.

12. KEY PAD PCB REPLACEMENT

This procedure provides instructions for removing and re-

placing the key pad PCB.

1.

Remove the front panel assembly as directed in sec-

tion 10.

2.

Place the front panel assembly face down on a pro-

tected work surface.

3.

Remove the 14 Phillips screws that attach the back-

ing plate to the front panel assembly.

4.

Release the LCD display cable from the retaining

clip on the front panel backing plate (Figure ).

5.

Remove the front panel backing plate, carefully

feeding the LCD cable through the access hole to

avoid damage to the cable or connector.

6.

Remove the rubber cushion pad from the key pad

PCB and remove the PCB.

7.

Reverse the above steps to install the replacement

assembly.

10

Site Master S113BQ MM

FRONT PANEL

BACKING PLATE

LCD CABLE
RETAINING CLIP

Figure 15.

Front Panel Backing Plate

KEYPAD PCB

Figure 16.

Front Panel Keypad PCB Location

Summary of Contents for Site Master S113BQ

Page 1: ...wn in Figure 2 3 PERFORMANCE VERIFICATION Paragraphs 4 through 9 contain tests that can be used to ver ify the performance of the Site Master Model S113BQ 3 1 Initial Setup for Testing 1 Press and hold the ESCAPE CLEAR key then press the ON OFF key to turn on the Site Mas ter This sets the instrument to the factory pre set state 2 Release the ESCAPE CLEAR key and use the Up Down arrow key to adjus...

Page 2: ...TER key 3 Press the F2 soft key set F2 to 1000 MHz then press the ENTER key 4 Connect the RF cable from the Site Master Re flection Test Port to the RF Input on the MS2663C or equivalent 5 Set up the Spectrum Analyzer as follows a Press the Preset key then select Preset All F1 b Press the Frequency key c Press the 1 key and then the GHz key to change the Center Frequency to 1 GHz d Press the Span ...

Page 3: ...urn Fixed CW Off 5 RETURN LOSS VERIFICATION The following test can be used to verify the accuracy of re turn loss measurements Measurement calibration of the Site Master is required for this test a Equipment Required 20 dB offset Anritsu SC5270 6 dB offset Anritsu SC5237 Open Short Anritsu 22N50 50 Ohm Termination Anritsu 28N50 2 or SM PL b Procedure 1 Press and hold the ESCAPE CLEAR key then pres...

Page 4: ...key to highlight POWER MONITOR then press ENTER 8 Press the ZERO soft key to zero the power monitor When complete ZERO ADJ ON is displayed in the message area 9 Verify that the power monitor reading is 0 0 dBm 1 dB 10 Connect the output of the MA2418A Reference Source to the two attenuators so as to add 40 dB of attenuation Figure 3 11 Connect the MA2418A Reference Source and the attenuators to th...

Page 5: ...key c Using the Data Entry Keypad or Data En try Knob set the Stop frequency to 4 0 GHz Press the Enter key 7 Press the Channel 2 Display On Off key to Off 8 Press the Channel 1 Menu key 9 Using the Menu up down keys Highlight PRE CISION RL then press the Select key 10 At the PRECISION RETURN LOSS menu dis play use the Menu up down keys to highlight FINAL then press the Select key 11 Press the Cal...

Page 6: ...key to start the calibration process 20 When the calibration is complete remove the 50 Ohm Termination 21 Connect the SM PL termination to the beadless end of the air line and press the Select key to begin the measurement 22 Observe that the waveform displayed resembles that shown in Figure 6 23 Press the Cursor On Off key to On 24 Observe the Cursor menu readout The mini mum return loss reading f...

Page 7: ... as illustrated in Figure 9 4 Grasp the battery lanyard and pull the battery straight up and out of the unit as illustrated in Fig ure 5 Replacement is the opposite of removal Note the orientation of the battery contacts and be sure to in sert the new battery with the contacts facing the rear of the unit Figure 11 Site Master S113BQ MM 7 BATTERY ACCESS DOOR Figure 7 Battery Access Door Location Fi...

Page 8: ...horten battery life If left unused a fully charged battery will discharge it self over time Temperature extremes will affect the ability of the bat tery to charge allow the battery to cool down or warm up as necessary before use or charging Discharge an NiMH battery from time to time to im prove battery performance and battery life The battery can be charged and discharged hundreds of times but it...

Page 9: ...he front half of the case and begin to separate the two halves CAUTION Do not force or pull the two halves of the case apart as there are delicate cables at tached between the two halves that must be disconnected first 5 Carefully depress the latch tab and disconnect the LCD display cable from J12 on the main PCB 6 Carefully disconnect the keypad interface cable from J1 on the main PCB 7 Carefully...

Page 10: ...7 Reverse the above steps to install the replacement assembly 12 KEY PAD PCB REPLACEMENT This procedure provides instructions for removing and re placing the key pad PCB 1 Remove the front panel assembly as directed in sec tion 10 2 Place the front panel assembly face down on a pro tected work surface 3 Remove the 14 Phillips screws that attach the back ing plate to the front panel assembly 4 Rele...

Page 11: ...he main PCB assembly with the connector panel attached 1 Remove the front panel assembly as directed in sec tion 10 2 Disconnect the battery connector from J13 on the main PCB 3 Remove the three PCB mounting screws and re move the PCB assembly with the connector panel attached 4 Reverse the above steps to install the new main PCB NOTE The main PCB connector panel fits into grooves in the two halve...

Page 12: ...on 05 1 ND53250 Option 05 PCB Assembly 1 48297 Plastic Window 790 518 Gasket 52737 3 Keypad PCB Assy 1 46649 1 Membrane Keypad Main 1 Table 1 Replaceable Parts List Part Number Description Qty Hardware 900 861 Pan Head Screw 4 20 0 365 15 900 869 Screw 4 40 0 875 4 900 720 Screw 4 40 0 187 3 900 697 Screw 4 40 0 312 3 785 929 M F Stand off 4 40 11 16 3 900 326 Kep Nut 4 40 0 187 8 790 516 Hole Plu...

Page 13: ... 2194 South Africa Telephone 011 27 11 787 7200 FAX 011 27 11 787 0446 AUSTRALIA ANRITSU PTY LTD Unit 3 170 Foster Road Mt Waverley VIC 3149 Australia Telephone 03 9558 8177 FAX 03 9558 8255 ISRAEL TECH CENT LTD 4 Raul Valenberg St Tel Aviv 69719 Telephone 03 64 78 563 FAX 03 64 78 334 SWEDEN ANRITSU AB Fagelviksvagen 9A 145 84 Stockholmn Telephone 08 534 707 00 FAX 08 534 707 30 BRAZIL ANRITSU EL...

Page 14: ...14 Site Master S113BQ MM NOTES ...

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