Sony DSR-250, Service Manual

Page: 196 / 322

5-38
5-2-3. PARTS REPLACEMENT
• Precaution
For details on disassembling the cabinets, boards and other parts, refer to “Disassembly” of the Service Manual of each model. For details on
replacing parts (disassembly, assembly) of the mechanism deck, refer to “Information” on page 5-34.
2-3-2. TAPE GUIDE 2/7
Disassembly/Assembly
When the tape guide 2/7 is replaced or attached, perform each
adjustment from Adjustment Start -3 of the flowchart on page 5-52.
To attach or remove the tape guide, use the
screwdriver for the tape path (J-15). When
attaching the TG rollers, check the upward and
downward directions and that the TG roller to be
attached to the TG7 side is exclusively for the TG7
side. Then attach the TG rollers to the chassis
shaft.
2-3-1. TAPE GUIDE 1/8 AND GUIDE GUARD
Disassembly/Assembly
When the tape guide 1/8 is replaced or attached, perform each
adjustment from Adjustment Start -2 of the flowchart on page 5-52.
To attach or remove the tape guide, use the
screwdriver for the tape path (J-15). When
attaching the TG rollers, check the upward and
downward directions and attach them to the
chassis shaft.
The guide guard is fixed at each slit of the cassette
positioning shaft. To attach the guide guard, only
insert it into the right and left holes. To remove it,
use a pair of tweezers as shown in the figure
below.
[TG2 side]
TG upper flange
TG roller
TG sleeve
TG sleeve
TG ring
TG ring
Compression coil
spring (TG)
Compression coil spring (TG)
TG2 arm block
[TG7 side]
TG upper flange
TG7 roller (Note that the shape is
different from that of the other rollers.)
Be careful not to touch the
tape guide ( part).
TG7 arm block
Face the side of the deepest
hole downward and insert the
roller into the shaft.
The lower flange of the TG7
roller is thicker than those of
the TG1, 2, and 8 rollers.
TG7 roller
[TG1 side]
(The components are the
same as on the TG8 side.)
Be careful not to touch the
tape guide ( part).
[TG8 side]
TG upper flange
TG roller
TG sleeve
TG ring
Compression coil
spring (TG)
Guide guard
Cassette positioning shafts
TG roller
Face the side of the
deepest hole downward
and insert the roller into
the shaft.
Insert a pair of tweezers into the
clearance of the chassis to release
the lock of the slit.
Lock of slit