Summary of Contents for Heal Force Prince 120 Body Fat
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Page 1: Service Manual
Maintenance Manual for Prince 120 Body Fat Measuring Apparatus Prince 120 Body Fat Measuring Apparatus Service Manual Version：2008.08.01 Page 1 of 23... - Page 2 Maintenance Manual for Prince 120 Body Fat Measuring Apparatus COPYRIGHT 1. Without the written permission of our company, any content of the manual should by no means be duplicated or disclosed to any other individual or organization. 2. Individual or organization should in no way use the manual unless authorized by our company.
- Page 3 Maintenance Manual for Prince 120 Body Fat Measuring Apparatus Table of Contents I. Panel and functions of body fat measuring apparatus ..................4 II. Disassembly and maintenance of mechanical parts..................5 III. Steps on disassembly of body fat measuring apparatus................. 5 1.
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Page 4: I. Panel And Functions Of Body Fat Measuring Apparatus
Maintenance Manual for Prince 120 Body Fat Measuring Apparatus I. Panel and functions of body fat measuring apparatus Front view of the apparatus: 人体脂肪测量仪 基础 个人 代谢 号码 (kcal) 身高 体重 年龄 性别 高 肥胖类型 低 标准 偏高 设定 Item... -
Page 5: Ii. Disassembly And Maintenance Of Mechanical Parts
Maintenance Manual for Prince 120 Body Fat Measuring Apparatus II. Disassembly and maintenance of mechanical parts Maintenance tools Big and small Phillips Nipper pliers Art knife screwdriver Big and small flat tip Diagonal cutting pliers Iron, solder stick screwdriver Tweezers Unless otherwise specified in the disassembly diagram, the installation shall be progressed in the reverse sequence as shown in the diagram. -
Page 6: Open The Lower Cover
Maintenance Manual for Prince 120 Body Fat Measuring Apparatus Item Description Quantity Fitting Housing of body fat measuring apparatus 2. Open the lower cover: Unscrew 4 cross tapping screws located at the lower cover, as shown in the diagram: Page 6 of 23... -
Page 7: Open The Rear Cover
Maintenance Manual for Prince 120 Body Fat Measuring Apparatus Item Description Quantity ST2.9*9.5 tin-coated tapping screw (Type F ) Housing of body fat measuring apparatus 3. Open the rear cover As shown in the diagram, detach the upper and lower covers, And be caution to make damage to the power wire linking to the battery cable. - Page 8 Maintenance Manual for Prince 120 Body Fat Measuring Apparatus Item Description Quantity ST2.9*7 tin-coated tapping screw (Type F ) Upper cover of body fat measuring apparatus Step 2: Remove PCB board Item Description Quantity PCB board Upper cover on housing of body fat measuring apparatus On removal of PCB board, please avoid damage to the power cable linking to the battery.
- Page 9 Maintenance Manual for Prince 120 Body Fat Measuring Apparatus Item Description Quantity Key frame and conductive rubber LCD screen foaming adhesive strip Electrode pad LCD screen IV. Introduction on circuit of body fat measuring apparatus General circuit diagram Page 9 of 23...
- Page 10 Maintenance Manual for Prince 120 Body Fat Measuring Apparatus Sine wave generation circuit Differential detection circuit Self-calibration, diode connection and tetrode connection selection circuit Power supply circuit Dia. <2-1> Principle diagram for prince 120 v1.1 Page 10 of 23...
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Page 11: V. Functional Description On Sub-Circuits
Maintenance Manual for Prince 120 Body Fat Measuring Apparatus As shown in the diagram above, Prince 120 circuit principle diagram is divided into a) main control MCU circuit (including LCD interface circuit and external crystal oscillator); b) power supply circuit; c) sine wave generation circuit; d) self-calibration, diode connection and tetrode connection selection circuit;... -
Page 12: Power Supply Circuit
Maintenance Manual for Prince 120 Body Fat Measuring Apparatus Diagram <5-1> MCU control circuit The diagram above shows the main control MCU chip circuit, which is designed to play the role of the signal , DA sampling, LCD and signal of body fat measuring. - Page 13 Maintenance Manual for Prince 120 Body Fat Measuring Apparatus Diagram <5-2> Power supply circuit As shown above, the circuit is designed to provide DC-DC voltage test function (DC-DC V TEST), POWER-ON stabilization function and power-off control function in addition to the regular DC-DC step-up function.
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Page 14: Sine Wave Generation Circuit
Maintenance Manual for Prince 120 Body Fat Measuring Apparatus 3. Sine wave generation circuit: Diagram <5-3> Sine wave generation circuit As shown above, the circuit is a generation circuit sine wave of 50KHz and transmits with the sine , RI1 and LI1 to the human body in the way of current for test so as to allow U3 MCP6004... -
Page 15: Differential Detection Circuit
Maintenance Manual for Prince 120 Body Fat Measuring Apparatus 4. Differential detection circuit: Diagram <5-4> Differential detection circuit As shown above, the differential detection circuit is designed to allow RI1 and LI1 which is due to produce voltage RV1 and LV1 generated by via U3’s operational differential amplification through the human body, to output a differential-value sine wave SIN_WAVE at U3 #8 pin. -
Page 16: Auto Calibration, Diode Connection, Tetrode Connection Selection Circuit
Maintenance Manual for Prince 120 Body Fat Measuring Apparatus 5. Self- calibration, diode connection, tetrode connection selection circuit: Diagram <5-5> Auto calibration, diode connection, tetrode connection selection circuit As shown above, RI, RV and LI, LV in the circuit are connected to the external electrode. The ring circuit of the voltage and current is controlled and switchover by 2 analog switches. -
Page 17: Crystal Oscillator, Key And Lcd Display Circuit
Maintenance Manual for Prince 120 Body Fat Measuring Apparatus J1-J4’s 4 pin electrodes comprise 2 pairs of circuit for test of resistance across human body. With the different switch combination of control pin’s A and B, it is possible to allow the AC signal of LI... -
Page 18: Vi. Commissioning Method And Common Troubleshooting
Maintenance Manual for Prince 120 Body Fat Measuring Apparatus S2, S3, S4, S5 keys: they are control keys located on the panel, namely up key, down key, set key, test start key. LCD interface (J5): the interface, made of carbon film and home-made zebra strip foaming rubber strip, is the circuit to communicate with LCD screen so as to transmit the signal from MCU chip to drive and control LCD screen. -
Page 19: Auto Shutdown And Shutdown Commissioing
Maintenance Manual for Prince 120 Body Fat Measuring Apparatus Crystal oscillator adjacent to Check crystal oscillator Y1’s with MCU is in start-oscillation oscilloscope for start-oscillation status Zebra strip is in good contact Take off the cover and unscrew 7 screws located on PCB board as shown in Dia. -
Page 20: Commissioning On Functional And Accuracy Test
Maintenance Manual for Prince 120 Body Fat Measuring Apparatus Possible fault Troubleshooting Continuous welding of main Check (POWERE ON/OFF) pin. chip 3.3 Commissioning on functional and accuracy test Disable two electrodes at both left and right side respectively with leading wires. Connect the electrode of both sides to the resistance box with a leading wire, respectively and set the resistance box to 720Ω. -
Page 21: Project Mode
Maintenance Manual for Prince 120 Body Fat Measuring Apparatus AC1,500V appears between the application part and housing (B-d). 4. Project mode The body fat measuring apparatus is equipped with project mode, designed to connect U2’s #16 pin and #17 pin (ie. JP1’s two contacts to be connected with soldering tin) before entry into project mode. -
Page 22: Waveform Measurement
Maintenance Manual for Prince 120 Body Fat Measuring Apparatus 5. Waveform measurement Measurement mode: Connect the grounding terminal of oscilloscope to –BK terminal. Turn on the “power”to select the personal no.“Guest”. Press the “Set” key until only “0” appears in the screen. Start the test by pressing the “Set”... - Page 23 Maintenance Manual for Prince 120 Body Fat Measuring Apparatus Global Exclusive Agent Nison Instrument (Shanghai) Limited Address: Floor 15th, No.2 Hua Shan Road, Shanghai 200040, P. R. China TEL: 86-21-62728646, 62712931 FAX: 86-21-62728772 E-mail: export@hf.healoo.com Website: www.healforce.com Manufacturer Shanghai Lishen Scientific Equipment Co., Ltd.
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