Tt Brake Test; Tt Speed (Phase) Test - Technics SL-DZ1200PP Service Manual

Direct drive digital turntable

Table of Contents

10.2. TT BRAKE TEST

· Set the brake to the maximum for FAST and press the start button with a CD inserted. (Please Wait is displayed for some time.)

Press the [FAST] button when steady rotation has been reached. →The TT count from pressing [FAST]until complete stop is

measured and the value is displayed on the LCD.

Next, set to the maximum for SLOW, press the start button, and then press the [SLOW] button in the same way to display the

respective results on the LCD. (SLOW inspection ispossible only after FAST has been performed once.)

Judgment standard: [FAST] Within 80 degrees (TT count values 15858) OK, [SLOW] Angle difference from FAST within 60

degrees (count value 11894 or more) OK

· Tempo reset is done automatically with entry to this page.

· Press the start button with a CD inserted, move the tempo slider sequentially to 0, +50%, and -50%, and press [TEST].

(Perform this operation manually. This also serves for inspection of the slider itself).At this time, automatic counting is

performed on the inside (a measuring time of TT 1.5 revolutions each is required), and when the upper and lower limit range

set in advance is not exceeded, OK is displayed on the LCD, while NG is displayed when therange is exceeded → Phase

deviation (DP value) within 12 between MAX and MIN.

Note:

For the measuring of page 3, it is required to wait until the TT speed has stabilized before the [TEST] button is pressed.

· At the same time, the cogging deviation width also is displayed on the LCD. (OK/NG display also is performed if upper and lower

limit have been decided.)

· When the tempo slider is not set to ±50% or 0% and if tempo reset is not in ON condition, measuring does not start even when

[TEST] is pressed.

→In case of NG, a defect of the shaft in case of a mechanical fault, a defective servo constant in case of an electrical defect, or

defective parts can be assumed.

SL-DZ1200PP / SL-DZ1200EB / SL-DZ1200EG / SL-DZ1200EP / SL-DZ1200GN

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