ALIGNMENT PROCEDURES
MODEL:
HIF-6880USMPT
FM AND AM RF ALIGNMENT CHART ( IF )
Date:
Step
item
Input Circuit
Output Circuit
Tuner
Adj -
Adjustment
Setup
Setup
setting
Point
Unless otherwise specified set switches as follows:
FM Function: FM
Adjust generator frequency to a center of the FM band where no FM broadcast exists
IF
Connect FM IF
Connect Co19 and GND
FM in band
Adjust for straight and
1
Adjustment
sweep output
IF-OUT terminal to
end
T304
symmetrical S-curve
terminal to IC302
IF sweep input terminal
with max.amplitude.
2
FM
Headphone jack or
87.5 MHz
L303
Adjust L301 for max output
Band setup
speaker terminal
108MHz
Done
FM SG ANT.
Headphone jack or
90.1 MHZ
L302
Adjust for max.output and
3
Tracking (1)
Terminal 90.1 MHz,
speaker terminal
MONO
best waveform
1kHz, +-22.5kHz dev
4
Tracking (2)
106.1 MHz, 1 kHz
Headphone jack or
106.1 MHz
CT303 Same as above.
+-22.5 MHz dev
speaker terminal
5
Repeat steps 3 and 4.
MW
IF
Connect standard loop
Connect input terminal
MW in band
Adjust tor max. amplitude
1
Adjustment
antenna to output ter-
genescope to detector
end
T302
with symmetrical 450 kHz.
minal of genescope
output
2
MW
Headphone jack or
522 kHz
T301
Adjust L135 for max output
Band
speaker terminal
1620 kHz
CT302 Adjust CT133 for max output
3
Tracking (1)
612 kHz 400 kHz,
Headphone jack or
612 kHz
T303
Adjust for max.output and
3% mod
speaker terminal
best waveform
4
Tracking (2)
1404 kHz 400 kHz,
Headphone jack or
1404 kHz
CT301 Same as above.
3% mod
speaker terminal
5
Repeat steps 3 and 4.
TAPE SECTION
HEAD ADJUSTMENT (AZIMUTH)
10 kHz test tape (example:MTT-114N) must be used for this adjustment. Connect to VTVM or oscilloscope to the head-
phone JCK or speaker terminal Press the play button.
Adjust the azimuth by using a screw driver to maintain the maximum L & R output voltage. Adjust tape. Please secure the
azimuth position by using locking paint.
RECODING BIAS OSCILLATOR FREQUENCY ADJUSTMENT
Connect the frequency counter to of R601 two ends.
Press REC button of tape .
Adjust T201 obtain 60 kHz +-100 HZ
7
Summary of Contents for HIF-6880USMPT
Page 1: ...HIF 6880USMPT...
Page 4: ...DISASSEMBLY INSTRUCTIONS MODEL NE 562 3 SCREW3X10PA SCREW3X10PA SCREW3X10PA...
Page 5: ...ADJUSTMENT LOCATIONS 4...
Page 17: ...16 IC BLOCK DIAGRAM MODEL NE 562...
Page 18: ...17 IC BLOCK DIAGRAM MODEL NE 562...
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Page 22: ...BLOCK DIAGRAM 21...
Page 23: ...WIRING DIAGRAM 22...
Page 24: ...SCHEMATIC DIAGRAMS 22 23...
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Page 30: ...SCHEMATIC DIAGRAMS 28 29...
Page 31: ...SCHEMATIC DIAGRAMS 28 30...
Page 32: ...PRINTED CIRCUIT BOARDS 31 173 056320 01 173 056301 09...
Page 33: ...PRINTED CIRCUIT BOARDS 32 173 056320 01...
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Page 35: ...PRINTED CIRCUIT BOARDS 34 173 056351 01 173 056356 01 173 0563 1 09...
Page 36: ...35 EXPLODED VIEW PARTS LIST CABINET MODEL NE 562...
