LG Electronics TL-AT130M Audio/Control A/C Head Adjustment, Adjustment Procedure/Diagrams

DECK MECHANISM ADJUSTMENT

5. Audio/Control (A/C) Head Adjustment

Purpose: To insure that the tape passes accurately over the Audio and Control Tracks in exact alignment of the both Record and Playback Modes.

5-1. Preliminary Adjustment (Height and Tilt Adjustment)

Perform the Preliminary Adjustment, when there is no Audio Output Signal with the Alignment Tape.

Test Equipment/ Fixture	Test Conditions (Mechanism Condition)	Adjustment Point
• Blank Tape		• Tilt Adjustment Screw(C)
• Screw Driver(+) Type 5mm	• Play the blank tape	• Height Adjustment Screw(B)
		• Azimuth Adjustment Screw(A)

Adjustment Procedure/Diagrams

1)Initially adjust the Base Assembly A/C Head as shown Fig. C-5-1 by using the Height Adjustment Screw(B).

2)Play a blank tape and observe if the tape passes accu- rately over the A/C Head without tape curling or folding.

3)If folding or curling is occured then adjust the Tilt Adjustment Screw(C) while the tape is running to resem- ble Fig. C-5-3.

4)Reconfirm the tape path after Playback about 4~5 sec- onds.

NOTE

Ideal A/C head height occurs when the tape runs between 0.2~0.25mm above the bottom edge of the A/C Head core.

10.9

A/C Head Base

Fig. C-5-1

A/C Head	Tape
	P4
	Tape
	0.2~0.25mm

Fig. C-5-3

X-Value Adjustment
Hole
Fixed Screw
Azimuth Adjustment	Tilt Adjustment
Screw(A)	Screw(C)
	Height Adjustment
	Screw(B)
A/C Head Assembly
Fig. C-5-2
	4-16