SONY XR2750
Service Manual

SECTION 4 MECHANICAL ADJUSTMENTS
1. Clean the following parts with a denatured-alcohol-moistened swab: playback head pinch roller rubber belt capstan idler 2. Demagnetize the playback head with a head demagnetizer. 3. Do not use a magnetized screwdriver for the adjustments. 4. The adjustments should be performed with the power supply voltage (14.4 V) unless otherwise noted. � Torque Measurement Mode Forward Forward Back Tension Reverse Reverse Back Tension FF, REW Torqu Meter CQ-102C CQ-102C CQ-102RC CQ-102RC CQ-201B Meter Reading 35�65 g�cm (0.49�0.90 oz�inch) 0.5�5.0 g�cm (0.01�0.07 oz�inch) 35�65 g�cm (0.49�0.90 oz�inch) 0.5�5.0 g�cm (0.01�0.07 oz�inch) 60�200 g�cm (0.83�2.78 oz�inch)

SECTION 5 ELECTRICAL ADJUSTMENTS
TEST MODE This set have the test mode function. In the test mode, FM Auto Scan/Stop Level and MW Auto Scan/Stop Level adjustments can be performed easier than it in ordinary procedure. <Set the Test Mode> 1. Set the �OFF� mode. 2. Push the preset 4 button. 3. Push the preset 5 button. 4. Press the preset 1 button for more than two seconds. 5. Then the display indicates all lights, the test mode is set. <Release the Test mode> 1. Push the �OFF� button.

� Tape Tension Measurement Mode Forward Reverse Torqu Meter CQ-403A CQ-403R Meter Reading more than 60 g (more than 2.12 oz)

� 17 �