Important Points In Adjustment - Technics SL-DV250 Service Manual

Application
Tilt adjustment DVD test disc
Hex wrench
Inspection Extension cable (module P.C.B. to mother
P.C.B.)
Extension cable (module P.C.B. to mother
P.C.B.)(2pcs: DVD-RV31 only, 1pce: DVD-RV41
only)
Others Screw lock
Grease
Oil
Confirmation CD test disc
VCD test disc

8.2. Important points in adjustment

8.2.1. Important points in optical adjustment
- Before starting optical adjustment, be sure to take anti-static
measures.
- Optical pickup tilt adjustment is needed after replacement of the
following components.
1. Optical pickup unit
2. Spindle motor unit
3. Optical pickup peripheral parts (such as rail)
Notes
Adjustment is generally unnecessary after replacing other parts of the traverse unit. However,
make adjustment if there is a noticeable degradation in picture quality. Optical adjustments
cannot be made inside the optical pickup. Adjustment isgenerally unnecessary after replacing
the traverse unit.
8.2.2. Important points in electrical adjustment
- Follow the adjustment procedures described in this Manual.
8.3. Storing and Handling Test Discs
- Surface precision is vital for DVD test discs. Be sure to store and
handle them carefully.
1. Do not place discs directly onto the workbench, etc., after use.
Name
41
Number
DVDT-S15 or DVDT-S01
JGS0098 (DVD-RV41 only)
RZZ0L01
RFKXGAK152
RFKXGA1280, JZS0648
PVCD-K06 or any other
commercially available disc
PVCD-K06 or any other
commercially available disc