Sharp VL-MC500U Service Manual download pdf (Page 27)

VL-MC500U/K

[Making adjustments]

Adjusting the servo system controller and related parts

1. Setting the system codes

Replacement of IC705 E

PROM requires the following data to be set in this order.

[Procedure]

Set the unit to the VCR mode and set the data for each address.

Code

1. Model code 2. Destination code 3. Specification code 4. Menu selection code 5. Software switching code 6. Calender switching

Address 01 09 02 0A 03 0B 04 0C 05 0D 07 0F

Data 00 FF 01 FE 1C E3 00 FF 00 FF 02 FD

• Adjustment with automatic machine

Mode VCR ADJ mode

Procedure 1) Using the 12 command, set the VCR adjustment mode.

2) Using the 20 command, give the E

PROM write permission.

3) Set the system code with the 22 command for each type.

4) Using the command, set write inhibition.

5) Using the command, cancel the adjustment mode.

Examples • During E

PROM (IC705) replacement.

• Manual adjustment

Mode VCR ADJ mode

Procedure 1) Set the CAM/OFF/VCR selection switch to VCR.

2) Press “CONTINUE” → ”VCR adjustment” on the remote controller to set the VCR adjustment mode.

(At this time an indication “VCR ADJ” appears at the left lower side.)

Enter a setting corresponding to the address.

3) Adjust the address by moving up and down the blinking numeral with the FF and REW key, and fix the address

by pressing the PB key.

4) Adjust to the setting by moving up and down the blinking numeral with the FF or REW key, and set data by

pressing the PB key.

5) Press the STOP key to set the address set state.

6) Repeat the operations 3), 4) and 5) as much as input addresses. After completion of input of all items hold

down the “CONTINUE” key to cancel the VCR adjustment mode.

7) Set the CAM/OFF/VCR selection switch to OFF.

Examples • During E

PROM (IC705) replacement.

2. HSWP adjustment

Mode VCR ADJ mode

Procedure 1) Play back the alignment tape in the video mode.

2) Press the "CONTINUE" and "HSWP ADJ" keys on the adjustment remote control in this order.

→ This executes the HSWP adjustment.

When the adjustment is successful, the LCD lights up [OK] and the cassette is automatically ejected. If not

properly adjusted, the LCD lights up [NG].

Examples • During mechanism replacement. • During E

PROM replacement (IC302 inside the head amplifier circuit board).

(1) Electromagnetic conversion

Address 27 28 2B *105 25 26

Data 40 90 90 80 40 90

* The address uses only when replacing the IC302.

When replacing the IC705 E

PROM, first make the following settings and then start the adjustments.

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 115 116

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Sharp VL-MC500U Service Manual Page 27

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