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I BOUGHT A PAIR OF INFINITY VINTAGE SPEAKERS THAT REQUIRED TO BE REPAIRED AND THE ELECTRONIC TECHNICIAN ASKED ME FOR THE SERVICE MANUAL.
I TRIED TO GET IT AT THE MANUFACTURER'S SITE WITH NO SUCCESS, SO I STARTED TO LOOK FOR IT IN THE WEB FOR A LONG TIME, UNTIL I FOUND THE SERVICE MANUAL IN THIS EXCELLENT SITE "OWNER'S MANUAL.COM".
NOW I HAVE MY SPEAKERS WORKING AND ENJOYING THE MUSIC I LIKE.
THANKS TO "OWNER`S MANUAL.COM" I RECOMMEND THIS SITE TO EVERYONE.
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Very quick response. Very good and accurate print quality of the scanned document.
 ;
The service manual was very usable and clear enough to see the individual values of all of the components (unlike some of the service manuals I have gotten in the past from web sites similar to this one). The price was right and the information was greatly appreciated. It helped me with an otherwise very difficult repair. It was much needed and appreciated. A faster turn around on my order would be nice, but I understand the constraints on your staff's time. Thank you for your service.
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Excellent manual. Helped me out with disassembling and troubleshooting my projector.
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thanks you are the best.Very good detail, Quick service response. A useful service manual with all details.
ADJUSTMENT PRACTICAL SERVICE FIGURE
6
A MAIN C.B
<TUNER SECTION>
Sensitivity : (IHF, THD 3%)
SFR 1
VOLUME
F M Less than 20dB [at 76MHz (YU,YL)] Less than 20dB [at 87.5MHz (YH,YJ,YZ)] Less than 20dB [at 90MHz (YU,YL)] Less than 20dB [at 98.1MHz (YH,YJ,YZ)] Less than 20dB [at 108.0MHz] A M Less than 59dB [at 630KHz] Less than 56dB [at 1000KHz (YU,YL)] Less than 56dB [at 999KHz (YH,YJ)] Less than 59dB [at 999KHz (YZ)] Less than 56dB [at 1440KHz (YU,YL,YH,YJ)] Less than 59dB [at 1440KHz (YZ)]
4
2
IC1
VR1
Sensitivity : (S/N 10dB)
L102
5
VC101
TP2(VT)
3
PHONES
L103 L105
J1
4 3
L101 BAR ANT P HEAD
1
6
F M More than 43dB [at 76MHz (YU,YL)] More than 43dB [at 87.5MHz (YH,YJ,YZ)] More than 43dB [at 90MHz (YU,YL)] More than 43dB [at 98.1MHz (YH,YJ,YZ)] More than 43dB [at 108MHz] A M More than 25dB [at 630kHz (YU,YL,YH,YJ)] More than 24dB [at 630kHz (YZ)] More than 27dB [at 1000KHz (YU,YL)] More than 27dB [at 999KHz (YH,YJ)] More than 25dB [at 999KHz (YZ)] More than 27dB [at 1440KHz (YU,YL,YH,YJ)] More than 25dB [at 1440KHz (YZ)] Intermediate frequency : F M 10.7MHz ± 0.1MHz A M 450kHz ± 3KHz FM stereo separation : More than 16dB [at 90MHz (YU,YL)] More than 16dB [at 98.1MHz (YH,YJ,YZ)]
S/N Ratio
IC101
7 FWD
<TAPE SECTION>
Tape speed : Wow & flutter : Take-up torque : F.F torque : Rew torque : Back tension : S/N ratio : Distortion : Noise level : 3000Hz ± 60Hz Less than 0.50% (RMS) 35 ~ 50g-cm (FWD) More than 36g-cm 60 ~ 170g-cm 1.5 ~ 4.5g-cm (FWD) More than 43dB (YU,YL,YH,YJ) More than 40dB (YZ) Less than 3.0% Less than 7.0mV (YU,YL,YH,YJ) Less than 4.0mV (YZ) (Vol MAX, without tape) Less than 0.3mV (YU,YL,YH,YJ) Less than 0.2mV (YZ) (Vol MIN, without tape) 63Hz + 1/-5dB ~ 8kHz ± 4dB (NORMAL) TTA � 100 TTA � 210 TTA � 320 (NORM)
<RADIO SECTION>
<TAPE PLAYER SECTION>
1. AM IF Adjustment 6. Tape Speed Adjustment L105 ....................................................................... 450kHz Settings : � Test tape : TTA�100 (TAPE CENTRE) � Test point : Phones Jack (J1) 2. AM VT Check � Adjustment location : SFR1 Settings : � Test point : TP2 (VT) � Tape/radio : TAPE Method : Set to AM 530kHz and check that the test � S-BASS : OFF point is more than 0.8V. Then set to AM 1710 � Volume : NON-CLIP(MAX -10dB ) kHz and check that the test point is less than Method : Play back the test tape and adjust SFR1 for 8.7V. 3000 ± 10Hz. Then confirm WOW is less than 0.50%. 3. AM Tracking Adjustment 7. Azimuth Adjustment L101 ....................................................................... 630kHz Settings : � Test tape : TTA�330/TTA�420 VC101 .................................................................. 1440kHz � Test point : Phones Jack (J1) � S-BASS : OFF 4. FM VT Adjustment � Tape/radio : TAPE Settings : � Test point : TP2 (VT) � Volume : MAX � Adjustment location : L103 � Adjustment location : Head azimuth adjustment Method : Set to FM 76MHz and adjust L103 so that the screw test point becomes 1.0V ± 0.1V. Then set to Method : Play back the 8KHz signal of the test tape and FM 108.1MHz and check that the test point adjust screw so that the output becomes maximum. is less than 8.5V. 5. FM Tracking Adjustment L102 ....................................................................... 76MHz
Frequency response : Test tape :
29
30
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