Teac Z-6000 - PINCH ROLLER PRESSURE MEASUREMENT; REEL TORQUE ADJUSTMENT; TAPE RUNNING ALIGNMENT

5-6 PINCH ROLLER PRESSURE MEASUREMENT —
1. With the cassette holder shut and no tape loaded, put the deck in
the play mode after pushing the cassette-in switch sensor arm
upwards and holding it.
2. Hook a spring scale on the pinch rofler assembly as shown in the
illustration.
3. Pull the scale downwards until there is sufficient force ta sepa-
rate the pinch roller from the capstan shaft.
4, €ase pressure until the pinch roller makes just enough contact
with the capstan shaft so that the pinch roller just begins to tura.
At this point, note the reading on the scale.
Right: 310 g ta 380g
Left: 135 gto 1659
§-7 REEL TORQUE ADJUSTMENT
1. Load the cassette tarque meter on the deck and read the pointer
indication on the dial scale for each tape transport operation.
The measured torque should be within the following values:
2. If not, adjust the semi-variable resistor on the SYSTEM
CONTROL PCB to obtain.
Torque
35~50g - cm (0.48 to 0.70 o2-inch}
9~11g- cm {0.12 to 0.16 02-inch)
S0g- cm (1.2 oz-inch) or more
F.F./REW
5-8 TAPE RUNNING ALIGNMENT
The following adjustments and checks should be made with back-
tension torque under 4 g-cm.
1. Play MTT-961 and MTT-962. Make sure that the tape does not
curl at the tape guide and REC & PLAY head quide. ,
2. If the tape curls at the left pinch roller tape guide, adjust REC &
PLAY head screw B (fig. 5-4} within 3/4 of a turn. When curling
has disappeared, adjust screw A tn the same manner to maintain
the horizontat position of the head.
3. Play MTT-902 from the very beginning, making sure that the
joint between leader tape and magnetic tape does not curl at
any guide. If it curls at top of the jeft tape guide, pam screw
B by up to 1/8 of a turn.
If it curls at the bottom, josen screw B by up to 1/8 of a turn.
After these adjustments, rewind the tape to the beginning once
more and play it, checking for curling at the tape guides. Then
set back tension to 8 gem and play a Maxell XL If €-90 from
the very beginning. Make sure the tape does not curl er jumn out
at the tape guide, After these adjustments and checks, reset back
tension to $ — 14 g-cm.
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5-6
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23
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4 2 310g ~380¢
7£1185¢~165¢
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