Marantz 5010 - Page 13

5. VU Meter Adjustment
SET UP
1. Power voltage:- 50 or 60Hz AC voltage rated
for the unit to be used in a market country.
2. TAPE selector switch position:- NORMAL.
3. Load:- Measuring instrument input im-
pedance.
4. Output terminal used:- MAIN P.W. Board
(P100) J120 and J220.
5. Input terminal:- MIC.
PROCEDURES
1. Connect a 1kHz, —60dBV input signal to the
MIC terminal. Set up the tape deck for the
recording mode of operation.
2. Adjust the REC control for 775mV output
level at MONI. OUT of the MAIN P.W.
Board (P100) J120 and J220,
3. Adjust R143 and R243 (3kQ each) until the
VU meter pointer deflects to the DOLBY
mark (DQ) on the VU meter.
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6. Recording Bias Current Adjustment
(Temporal)
SET UP
1.
Power voltage:- 50 or 60Hz AC voltage rated
for the unit to be used in a market country.
2. TAPE selector switch:- NORMAL.
PROCEDURES
1.
Set up the tape deck in the recording mode
of operation, Connect the VTVM to J104,
J105 (Lch) and J204, J205 (Rech). Adjust
the semifixed resistor R156 and R256 for
3.5mV VTVM read.
Proceed both for the right and left channels
in the same manner.
For the tape deck equipped with the TAPE
selector switch, make certain that the VTVM
reads approximately 4.5mV with it set to
the CrO, position.
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11