2.0 SAFTETY INSTRUCTIONS WAARSCHUWING WARNING Alle IC’s en vele andere halfgeleiders zijn All ICs and many other semi-conductors are gevoelig voor electrostatische ontladingen susceptible to electrostatic discharges (ESD). (ESD). Careless handling during repair can reduce life Onzorgvuldig behandelen tijdens reparatie kan drastically.
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2.1 ESD PROTECTION When the power supply is being turned on, you may not remove this laser cautions label. If it removes, radiation of laser may be received. PREPARATION OF SERVICING Pickup Head consists of a laser diode that is very susceptible to external static electrocity. Although it operates properly after replacement, if it was subject to electrostatic discharge during replacement, its life might be shortened.
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SAFTY NOTICE SAFTY PRECAUTIONS LEAKAGE CURRENT CHECK Plug the AC line cord directly into a 120V AC outlet (do Measure the AC voltage across the 1500 resistor. not use an isolation transformer for this check). Use an The test must be conducted with the AC switch on and AC voltmeter, having 5000 per volt or more sensitivity.
Dismantlement Method for CMB2101 A、 The procedure of disassembling the unit 1. Press EJ button and take out panel,remove A screw in top cover of the unit;Use tweezer to prize up the top cover as below blue arrow direction showed , remove the top cover.
CMB2101 Trouble shooting Product Model CMB2101 Area Date 2013-4-24 failure failure cause remark a、To check whether the 4Pin power input wire is connected well to the ISO connector; Whether it is loose of the 15A fuse of the ISO connector, can't be open circuit. b、To check whether the reset button Sw201 was long-term work then cause short circuit then on power on.
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Product Model CMB2101 Area Date 2013-4-24 failure failure cause remark a、To check whether the antenna was cold solder b、To check whether the intensity of radio input signal is too weak. c、To check the voltage of the 7th pin of tuner should be +3V3. d、To check the voltage of the 10th pin RES of tuner should be 3V6, the 11th pin CLK should be 3V1, the 12th pin DATE should Radio abnormal...
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Product Model CMB2101 Area Date 2013-4-24 failure failure cause remark n、To check the connected board of the CD deck mechanism. a、To check whether the format in the USB are fit the request of the unit. b、To check the voltage of the uppest pin of the USB connector which was on the panel should be +5V.
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The unit is first Powered up: ① NO-Fault- Found ② The unit is normal power ON:...