Sailor RE2100, Техническое руководство

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3 SERVICE RE2100
3.6.4.6 CHECK OF STEP ATTENUATOR
1. Select service programme SP-05-0 and press handset key.
2. Connect a scope probe to R169-4 (TP5-4) and read the signal to 0.55Vpp +/-0.05V.
3. In order to check the liniarity of the step attenuator, please see section 3.7.3.6. points 6-9.
3.6.4.7 CHECK OF 70 MHz IF AND LO INJECTION
1. Select service programme SP-05-3 and H3E mode.
2. Press handset key.
3. Place a diode probe on top of Q17-4 and read approx. 0.95V.
4. Select service programme SP-05-1 and H3E mode and press handset key.
5. Place the diode probe on top of Q17-4 and read approx. 1.25V.
6. Select service programme SP-05-0 and press handset key.
7. Place a diode probe on J02-4 and read approx. 1.4V.
8. Place the diode probe on top of Q17-4 and read approx. 1.75V.
9. Place the diode probe on J04-4 and read 1.8V.
10. Place the diode probe on top of Q24-4 and read approx. 13.5V
3.6.5 PERFORMANCE CHECK OF MICROPROCESSOR MODULE 5.
GENERAL
To execute a performance check of a microprocessor unit, keyboard unit and display unit (module 5, 6
and 7) it is necessary to dismantle the cover and remote the 2 PCB covers on module 5. Disconnect the
BNC and 25 poles D-connector to T2130. Connect an ex18V power supply at J03 pin 12 or pin
24, an external -18V power supply at J03 pin 10 and an adju9V power supply at J03 pin 11 or pin
23.
CHECK OF ON BOARD POWER SUPPLY
Connect a voltmeter between ground and anode of D02.Control the voltage to:
> 7.0V. Normally 9.0V.
Connect a voltmeter between ground and U15 pin 2. Control the voltage:
4.75V < +5VA < 5.25V.
Connect a voltmeter between ground and U17 pin 3. Control the voltage:
4.50V < +5VB < 5.50V.
Connect a voltmeter between ground and U18 pin 3. Control the voltage:
-4.50V > -5VB > -5.50V.
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