Rotel RP-6400 Technisches Handbuch Seite 6

II. AUTO-RETURN MECHANISM
SYMPTOM
play.
Turntable does not stop when it
2.
should.
3. Tonearm does not return even
when reject lever is operated.
4. Tonearm does not return even
when the stylus tip is in the final
groove.
5. Tonearm returns before reaching
the lead-over groove.
6. Shock noise is produced at auto•
return.
7, Tonearm does not fully return to
the arm rest.
8. Cartridge skips and auto return
is not fully completed.
9. Abnormal noise is generated at
return of tonearm.
Ill. OTHER
SYMPTOM
1. Hum and noise.
2. Distortion
3. Sound is not produced.
4. Channel separation is
inadequate.
5. Electrical noise.
6. Turntable does not rotate.
7. Wow and flutter
SECTION
POSSIBLE CASUE
1) Restore lever (129) and trip slide
(112) are not linked.
2) Restore lever mounting screw is
loose.
3) Power switch (118, 132 or 133)
is faulty.
4) Trip slide (112) is faulty.
1) Restore lever (129) and trip slide
(112) are not linked.
2) Stud (116) adjustment is wrong.
(Power ON•OFF position is not
correctly adjusted.)
3) Power switch is faulty.
4) Stud of slide arm (128) is bent.
5) Slide arm (128) works abnormal-
ly.
1) Reject arm and reject spring (54)
are not linked.
2) Reject arm is faulty.
Reject spring (54) is faulty.
3)
1) Return position is not adjusted
correctly.
Trip slide (112) is faulty.
2)
3) Faulty gear assembly engage-
ment.
4)
Faulty pinion gear.
1) Return position is not correctly
adjusted.
2) Trip slide is faulty.
1) Faulty pinion gear.
2) Faulty gear assembly engage-
ment (from scratching, damage,
bending, etc.)
1) Return stud of restore lever
assembly (129) is bent.
2) Restore lever fitting position is
wrong.
1) Trip slide and trip slide holder
(114) are faulty.
2) Stylus force is too much (too
little).
1) Meshing of pinion gear and main
gear is faulty.
POSSIBLE CAUSE
1) Inadequate grounding.
l) Cartridge is faulty.
2) Stylus tip is worn.
3) Stylus tip is bent.
4) Tonearm (sensitivity) is
inadequate.
1) Broken tonearm lead wire
and/or pin plug cord.
2) Cartridge is faulty.
1) Cartridge is faulty.
1) Faulty connection of pin
cord.
2) Cartridge is faulty.
1) Power transformer is faulty.
2) Motor is faulty.
3) Broken fuse.
1)
Motor is fau'ty.
2) DC voltage is wrong.
ACTION
1) Link them.
2) Adjust the restore lever position
and secure lever to the tonearm
shaft with screw.
3) Replace.
4) Replace.
1) Link them.
2) Readjust.
3) Replace.
4) Replace slide arm.
5) Repiace auto-return mechanism
assembly.
l) Link them.
Replace reject arm assembly
2)
(105).
Replace reject spring, or adjust
3)
the spring length: extend or
condense portion A.
(See Fig.A.)
1) Readjust.
2) Replace.
Replacegear assembly (102).
3)
4) Replace turntable platter.
1) Readjust.
2) Replace.
Replaceturntable platter.
1)
2) Replacegear assembly(102).
1) Replace restore lever assembly
or correct stud.
Correct the fitting position.
2)
1) Replace trip slide and trip slide
hol der.
2) Adjust stylus force.
1) Correct motor assembly position
(to separate from main gear
ACTION
1) Check grounding of the circuit
from cartridge to output pin
plug.
1)
Replace.
2) Replace.
3) Replace.
4) Replace.
1) Correct or replace.
2) Replace.
l) Replace.
1) Check and correct connection.
2) Replace.
1) Replace.
Replace motor assembly.
2)
3) Check rectifier circuit, and
replace fuse.
1) Replace.
2)
Check rectifier circuit.
6
Reject Spring
Fig.A Bottom View (portion)