Sony Ericsson XR-C7500RX Section Mechanical Adjustments, Section Electrical Adjustments

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	Torque Meter	Meter Reading
		2.95 – 6.37 mN•m
Forward	CQ-102C	(30 – 65 g•cm)
		(0.42 – 0.90 oz•inch)
Forward		0.05 – 0.44 mN•m
	CQ-102C	(0.5 – 4.5g•cm)
Back Tension
		(0.01 – 0.06 oz•inch)
		2.95 – 6.37 mN•m
Reverse	CQ-102RC	(30 – 65 g•cm)
		(0.42 – 0.90 oz•inch)
Reverse		0.05 – 0.44 mN•m
	CQ-102RC	(0.5 – 4.5g•cm)
Back Tension
		(0.01 – 0.06 oz•inch)
		5.89 – 19.61 mN•m
FF, REW	CQ-201B	(60 – 200 g•cm)
		(0.83 – 2.78 oz•inch)

• Tape Tension Measurement

Mode	Tension Meter	Meter Reading
		more than 8.83 mN•m
Forward	CQ-403A	(more than 90 g)
		(more than 3.18 oz)
		more than 8.83 mN•m
Reverse	CQ-403R	(more than 90 g)
		(more than 3.18 oz)

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.

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