Service manual
28
VL-NZ50U/NZ100U
VL-NZ150U
[Making adjustments]
Adjusting the servo system controller and related parts
1. Setting the system codes
Replacement of IC705 E
2
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
NZ150U
07 F8 01 FE
NZ150U
15 EA 00 FF 00 FF 02 FD
NZ100U/C
04 FB
NZ100U/C
15 EA
NZ100K
04 FB
NZ100K
1D E2
NZ50U/C
00 FF
NZ50U/C
37 C8
NZ50K
00 FF
NZ50K
3F C0
• 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
2
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
2
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.
<Setting method>
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
2
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
2
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
2
PROM, first make the following settings and then start the adjustments.