SONY XRC7500RX
Service Manual

SECTION 5 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. After the adjustments, apply suitable locking compound to the parts adjusted. 5. The adjustments should be performed with the power supply voltage unless otherwise noted. � Torque Measurement
Mode Forward Forward Back Tension Reverse Reverse Back Tension FF, REW Torque Meter CQ-102C Meter Reading 2.95 � 6.37 mN�m (30 � 65 g�cm) (0.42 � 0.90 oz�inch) 0.05 � 0.44 mN�m (0.5 � 4.5g�cm) (0.01 � 0.06 oz�inch) 2.95 � 6.37 mN�m (30 � 65 g�cm) (0.42 � 0.90 oz�inch) 0.05 � 0.44 mN�m (0.5 � 4.5g�cm) (0.01 � 0.06 oz�inch) 5.89 � 19.61 mN�m (60 � 200 g�cm) (0.83 � 2.78 oz�inch)

SECTION 6 ELECTRICAL ADJUSTMENTS
TEST MODE This set has the test mode function. <Set the Test Mode> 1. Turn ON the regulated power supply. (The clock is displayed) Note: Press the [OFF] button, if the clock is not displayed. 2. Press the preset [4] button. 3. Press 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. Press the [OFF] button.

CQ-102C

CQ-102RC

CQ-102RC

CQ-201B

� Tape Tension Measurement
Mode Forward Tension Meter CQ-403A Meter Reading more than 8.83 mN�m (more than 90 g) (more than 3.18 oz) more than 8.83 mN�m (more than 90 g) (more than 3.18 oz)

Reverse

CQ-403R

15