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A site where discontinualed schematic diagrams and back dated information can be found on discontinued radios tv's and any electronic equipment can be found. Newer manuals either Service and operating manuals. Radio amateurs should find this site a great source for ham radio equipment manuals. I will return to this site should I need information on any electrical equipment. priced easy to download in a PDF format and print pages need to undertake the repair.
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Quality scan of the original. All the detail necessary to troubleshoot, repair and adjust the unit. I'm sure I will be downloading more manuals in the future as the need arises.
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Exactly as described, a Service Manual complete with the schematics and PCB layout delivered in a timely manner. Many thanks for the great service.
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some of the writing is a bit blur but the part in the schmatic was great and i have fixed the machine thanks
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Well.. I'd searched for this manual and although I found many copies online I was pleased to find your website with a well balanced pricing system and easy to search and follow links. That together with the very quick response time was just what I was looking for.. being a very impatient tech.. ;-) I had the service manual in front of me within a short time.
Bookmarked.. and you can bet I will always come here first for my service & user manuals..
best regards
Ed(Tony) Foley
G7WHK
CONTENTS
1. SPECIFICATIONS: QW-1663........................................................................ 1 2. OPERATION CHART: QW-1663 ................................................................... 2 3. DRAWINGS
3-1. BLOCK DIAGRAMS: QW-1663 ........................................................................ 9 3-2. CHECKING TERMINALS AND COMPONENTS: QW-1663 .......................... 10 3-3. A1 ~ A4 PADS ................................................................................................. 10
4. EXPLODED VIEW: QW-1663 ...................................................................... 11 5. PARTS LIST: QW-1663 ............................................................................... 12 6. PRECAUTIONS FOR REPAIR: QW-1663
6-1. AC (ALL CLEAR) AND REMOVING OF MODULE ........................................ 13 6-2. ACCURACY CHECKING ................................................................................ 13 1. SPECIFICATIONS: QW-1663
Item Battery Battery life Current consumption Alarm system Accuracy Accuracy setting system Accuracy checking Accuracy setting Functions Detail CR2016 Approx. 1.5 years 2.78 µA maximum Piezo plate on Cover/Back ±15 sec./month Capacitor/Chip See page 13 +0.25 ~ +0.35 sec./day � Shock resistant � Electro-luminescent backlight � Auto light switch � Low-temperature resistance (�20 °C/�4 °F) � Altimeter Measuring range: 0 m to 6,000 m (0 ft. to 19,680 ft.) Measuring unit: 5 m (20 ft.) Auto/Manual memory measurements (up to 50 sets of data, each set including altitude, temperature, month, data, time) Reference altitude setting Altitude alarm Altitude tendency graph *Changeover between meters (m) and feet (ft.) � Barometer Measuring range: 460 hPa to 1,100 hPa (13.55 inHg to 32.45 inHg) Display unit: 1 hPa (0.05 inHg) Tendency graph of atmospheric pressure *Changeover between hPa and inHg � Thermometer Measuring range: �20 °C to 60 °C (�4 °F to 140 °F) Display unit: 0.1 °C (0.2 °F) *Changeover between Celsius (°C) and Fahrenheit (°F) � 1/100 sec. stopwatch Measuring capacity: 23:59'59.99" Measuring mode: Net time, split time, 1st-2nd place times � Daily alarm � Hourly time signals � Regular time keeping: Hr, min, sec, am/pm, year, month, date, day � Auto-calendar (pre-programmed to the year 2039) � 12/24-hour formats
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