Marantz TT6200 Service Manual page 3

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(1)ADUUSTMENTS
1. Tools required for adjustment
(1) Phillips-head screwdrivers (for M3 and M4)
(2) Slotted-head screwdrivers (medium and small sizes)
Caution for adjustments
(1) Plug off the AC power supply cord.
(2) Return the tonearm to tonearm rest and fix the tonearm to the tonearm
rest with the lock-lever. |
(3) Remove the turntable platter and mat.
(4) Set the cueing knob to the ¥ position.
2. Turntable platter height and level adjustments
(a) Install the turntable in a servicing jig and remove the turntable mat and
platter, if installed. Place the turntable upside down to remove bottom
cover (Fig. 1). |
(b) Remove with a Phillips-head screwdriver the eight screws which hold the
bottom base. (Fig. 2)
(c) Re-set the unit for normal use on the table.
(d) Remove the transit screws (red). (Fig. 3) |
(e) Replace the turntable platter, mat and install a record. Move the turntable
shaft by your hand vertically and horizontally to make sure that the sub-
chassis is suspended from the cabinet.
(f) Measure from the surface of the cabinet to the height of the installed
record. This dimension should be within 20.5 —22.0 mm (0.807 —0.870 in.).
Adjust the sub-chassis suspension screws to acquire this distance. Refer to
Fig. 5.
3. Stylus clearance adjustment
(a) Set the cueing knob to Y position and move the tonearm over the record
surface (Fig. 6). The clearance between the stylus point and the record
should measure between 6—10 mm (0.24—0.39 in.). This dimension is set
by screw A (Fig. 6).
(b) Move the tonearm to the end of the record and slowly rotate the turntable
platter until the tonearm starts returning. Stop the platter rotation when
the tonearm is in the approximate position as above. Again measure the
distance between the stylus point and the record surface. This measure-
ment should be approximately the same clearance 6—10 mm (0.24—0.39
in.). If the height needs to be adjusted, adjust screw B (Fig. 6).
4. Auto-return ratchet adjustment
(a) Adjust the gap between the turntable gear hook (Fig. 7) and the ratchet
trigger for 0.3—-0.4 mm (0.012—0.015 in.) by turning the adjusting pin.
5. Auto-return adjustment
(a) Set the cueing knob to the ¥ eeodtion,
(b) Move the tonearm to the end of the record disc so that the end of the
program is just occuring. Rotate the adjusting screw so that the ratchet
trigger does not engage the turntable gear hook until poe record ends
(Fig. 8).
(c) After this adjustment, check that the tonearm returns at the end of the
completed program on the disc, We recommend to use a test record com-
patable to stock No. RG-800 for this check.
6. Seesaw arm assy. adjustment
(a) Remove turntable platter and mat. Place turntable in a servicing jig and
turn turntable upside down. |
(b) Rotate the drive gear in direction of normal play. Continue gear rotation
until seesaw arm assy. is aligned as shown in Fig. 9:
(c) Adjust seesaw shaft for dimention at point "A" in Fig. 10 1.0—1.5 mm
(0.040 ~ 0.060 in.). After this adjustment tighten lock nut.
7. Start-switch adjustment
(a) Set start/stop knob to start position.
(b) Adjust gap between operating plate assy actuator and switch contact for
dimension specified in Fig. 11. Note that two different types of micro-
switches can be used during model assembly. Determine vendor type
micro-switch and adjust to dimension specified.
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Transit screws
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