Harman kardon hk 710 service manual
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Extracted text from harman kardon hk 710 service manual (Ocr-read)
Page 1
The Harman Kardon
Model hk 710
AM/FM Tuner
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Preliminary Manual
harman/kardon
Page 2
ALIGNMENT PROCEDURES
AM ALIGNMENT PROCEDURES
INSTRUMENTS: AM RF Signal Generator modulated with 400Hz at 30%.
AC VTVM
" NOTE: Set AM switch to ON position.
Connect signal source to a loop plaoed to radiate signals into AM antenna loop stick (L251).
STEP SIGNAL SOURCE GONNECT HAL SETDNG ADJUST ADJUST FOR
1 VTVM and oscilloscope to T251, T252, Maximum and undistorted
455kHz AM Mod. TPlA) and ground 3:16:3th T253 pattern an oscilloscope
2 VTVM and oaclllosoope to T254 Maximum and in-phase
TP(B) and ground pattern in step 1
3 Repeat steps 1 and 2 for best sensitivity.
4 54%: AM Mod. VTVM and oscilloscope to 540041 L252 Maximum Output
output jack
5 1600kHz AM Mod. Same as above tsookHz T0252 Same as above
6 Repeat steps 4 and 5 tor best dial accuracy,
7 SW AM Mode Same as above 600kHz L251 Maximum Output
6 1400: AM Mod. Same as above 1400kHz T0251 Same as above
9 Repeat $998 7 and 8 for best sensitivity