Marantz DV7000 Service Manual download pdf (Page 13)

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8-4 AS Adjustment

CAUTION :

Do not see the laser pick-up! Cover the laser pick-up unit

while AS adjustment.

Adjustment point : VR120, VR121

Test point : TP107(+), TP120 (+) TP105 (GND)

Equipment : Digital Multi Meter (DC voltage)

1. Press the mains switch (POWER BUTTON) while depressing

the PLAY button and STOP button.

2. Status will be on the TEST mode 2 and FL display shows

<TEST 2>. After a couple of seconds FL display shows

<TEST2 OK>.

3. Press the

button. Then the FL display shows <E3 02>

and the status will be in AS adjustment mode.

4. Measure the DC voltage at the test point TP107.

5. Press the

button again. Then the DVD laser will light ON

and the FL display shows <E3 00>.

6. Press the button again. Then the CD laser will light ON

and the FL display shows <E3 01>.

7. Adjust the voltage at the test point TP120 by VR121, that the

value must be same as TP107 (10mV) value measured on

#4. process.

8. Press the

button twice of time. Then the DVD laser will

light ON and the FL display shows <E3 00>.

9. Measure the DC voltage at the status DVD laser light ON.

Adjust the voltage at that status 35mV (±10mV) lower than

“CD laser light ON “ status by the trim resister VR120.

10.Press the

button again. Confirm the DC voltage at the

status CD laser light ON.

(DC voltage must be 35mV higher than the status DVD

laser light ON.)

11.Power OFF the mains switch (POWER BUTTON).

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Marantz DV7000 Service Manual Page 13