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MACKIE HR824 26 pages English-only Service Manual contains:
1) HR824 technical overview with the description of front and rear panel switches.
2) HR824 specs
3) Block Diagram
4) Wiring Diagram
5) Packaging management
6) Spare part & final assembly list (for PCB rev A and B) + exploded view
7) Test Procedures (where, how to measure voltage...) including Test Point diagram on the PCB.
8) IC and Transistor charts.
Excellent guide: very clear, good scan quality enabling us to print readable diagram :-)
Note:
Mackie HR824 make extensive use of surface mount devices (SMD). Service on the HR824 must
only be undertaken by experienced service technicians with the right tools, experience and patience to perform surface mount rework when needed.
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This Service manual is very well scanned and its clean to read, no any anti-theft words that un-english could understand. I got my CCD600 working with this manual and it´s clear shematics :)
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I was very pleased with the service provided and was surprised at how good the quality was of the manual. I thought it may be a third generation copy or so, but it is as good as the websites that charge 3 times this much. I repair some electronics for family and friends without charge, so this is perfect for me. Thank you very much.
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The service was great and the document was also great. Highly recommend!!!!
If anyone has a users manual... Please email me. need one. $ [email protected]
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I needed a service manual as the display on my oscilloscope was very dim. I thought I'd give owner-manuals.com a try, as they advertised a huge number of manuals. Sure enough they had one listed. I bought it hoping it would be useful... actually, I bought it hoping it would be readable! I've had manuals from online sources in the past, and been very disappointed. Not this time! An excellent manual, complete, and very readable. Using it I fixed my 'scope, and as such the manual was an investment that paid off manyfold. Do I have any complaints? One very minor one - The circuit diagrams could have been scanned at a higher resolution, as some of the details were a little difficult to make out - not impossible, just not as easy as my old eyes would like! Overall, I'm very satisfied with my manual, and I will certainly be using this company again. Well done.
SJ-48G-S/N SJ-51G-S/N SJ-55G-S/N
2. DEFROSTING (1) No defrosting operation is necessary No defrosting operation is necessary. As this machine is so designed that a built-in evaporator cools air and a fan circulates cooled air, neither the freezer nor the refrigerator is frosted, though the evaporator is frosted. The frosted evaporator is defrosted automatically due to the function of defrosting timer and heater, requiring no defrosting operation.
S O U R C E
(2) Where is melted ice brought 1. Melted ice is brought into the evaporating pan at the bottom of the set and is evaporated here by the heat of sub condenser. 2. Be sure that the evaporating pan is inserted correctly and is level.
(3) The following circuit diagrams in the table show automatic defrosting function of the refrigerator with timer and defrost thermostat. Operation 1. Cooling (Normal) Electric diagram
Defrost thermostat ON Compressor running Timer motor running Thermostat Timer contact
Description The integration timer integrates running time of the compressor. When it reaches 10 hours 50 min. at 50Hz, the timer contact is changed to start defrosting.
Thermo. fuse
Defrost heater
TM
COMP
Defrost thermostat (ON)
Figure F-3. 2. Defrosting
(Time 20 to 30 min.)
Thermostat Defrost thermostat ON Compressor stops Timer motor stops Timer contact
Thermo. fuse
Defrost heater
TM
COMP
The timer contact is changed to start defrosting, the timer motor stops, and power is supplied to the defrost heater. It takes about 20 to 30 min. to defrost. The defrost time will vary depending upon the amount of frost.
Defrost thermostat (ON)
Figure F-4 . 3. Drain
(Time approx. 5 min.)
Thermostat Defrost thermostat OFF Compressor stops Timer motor running Timer contact
T i e m t o r
Thermo. fuse
When the defrost thermostat turns OFF, the timer motor starts running. During the operation time(4 min. 20 sec. /50Hz) defrosted water is drained outside the refrigerator.
Defrost heater
TM
COMP
Defrost thermostat (OFF)
Figure F-5. 4. Cooling (start)
(Time approx. 5 min.)
Thermostat Defrost thermostat OFF Compressor running Timer motor stops Timer contact
Thermo. fuse
Defrost heater
TM
COMP
Timer contact is changed to cooling operation and the compressor starts running and the timer motor stops. Defrost thermostat contact becomes ON when it's cooled. And the timer motor starts running. (Figure F-3.)
C m p e s o r
S O U R C E
Defrost thermostat (OFF)
Figure F-6. 10
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