Roadstar HIF-9997 TR, Руководство по обслуживанию

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FM RF ALIGNMENT
SIGNAL RADIO
GENERATOR ADJUSTMENT REMARKS
87.5MHz TUNE Probe with r)L102 VT=2V +/- 0.1
1000Hz (low end ) the R101(R=47K)
modulation 87.5MHz or R102(R=47K)
108MHz 108MHz and probe the GND TC102 VT=7.8V +/-0.1
1000Hz (high end) with blak wire(-)
modulation
90MHz 90MHz VTVM&SCOPE L101 Adjust For maximum and
Across SPEAKER Good output
106MHz 106MHz Jack TC 101 Adjust For maximum and
Good output
Notes: 1.Repeat step 1 and 2 until their optimal outputs (2v and 7.8v) are obtained.
2.Repeat adjustment step 3.4.Three frequency station For Sen's
≦
26dB
CASSETTE SECTION:
Press the tape button.
Connect the SCOPE,VTVM,Distortion Meter and Frequency Counter.
ALIGNMENT
Step
Instrument connection Condition Adjustment
Speed
1
Connect WOW and Flutter Play tape Adjust semi fixed
Adujstment Mcter Across the speaker jack with MTT-111(3KHz) Resistor VR901 for
8
Ω
load. 3 KHz +/- 30 Hz
Head
4
Connect VTVM and Oscilloscope Play back test tape Adjust azimuth screw for
Adjustment Across speaker jack with 8
Ω
load MTT-113CN maximum output
(see diagram)
Oscillator
2
Connect Frequency Counter T201 Record mode Adjust T201 for 52KHz
Frequency Secondary
Azimuth Adjustment Diagram:
SCREWDRIVER
Base Model: Nil Revision Date: 2006-02-10
SETTING
Model No.: HIF-9997TR Revision No.: 0
TITLE: ALIGNMENT PROCEDURES
CONNECTION
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