1-6 (No.MA195)
SECTION 4
ADJUSTMENT
4.1
IDOLING CURRENT ADJUSTMENT
Instrument requited
DC power
Multimeter
Connection
Connect the DC power to the body (+B, remote and GND). After three minutes or more, start measurement
(wait until the voltage is stabilized).
Remote
GND
+B
GND DC power +B
Short-circuit the remote terminal and +B terminal
and connect to the power supply.
Use the thick cord for connection.
Measurement and adjustment
L ch; measure the voltage at six point TP105 ~ TP110 and adjust the point highest in voltage to 2.0 mV (VR101).
Measure the voltage at the six points again and confirm it meets the specification.
R ch; measure the voltage at six point TP205 ~ TP210 and adjust the point highest in voltage to 2.0 mV (VR201).
Measure the voltage at the six points again and confirm it meets the specification.
Specification for verification after adjustment
MIN
0.2 [mV]
MAX
2.5 [mV]
EXAMPLE
TP105,107,109,205,207,209 : " + " VALUE
TP106,108,110,206,208,210 : " - " VALUE
TP
109 or 209
110 or 210
1.5
FIRST
MEASURE
[mV]
2.2
1.9
2.9
3.8
2.0
2.0
0.9
SECOND
MEASURE
[mV]
1.6
1.2
2.3
2.0
1.5
Adjust the point highest in voltage to
2.0 [mV] (VR101 or VR201).
After adjustment, measure the voltage
to meet the specification(0.2 ~ 2.5 [mV]).
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