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QqZservice manual download site
Apart from the above various voltage, 12 v power supply separately after Q1061, Q1062 voltage adjustment send drum circuit and main shaft working voltage of the circuit. The supply drum and main shaft voltage circuit should work with their respective state of adjustment, so the feedback signal of drum power supply and main shaft power, respectively, from the drum drive circuit IC21013309. GIF (119 bytes) and main shaft driving circuit IC21033310. GIF (110 bytes). Drum power feedback signal directly to Q1061 at the base; Main shaft power feedback signal after IC1102 comparison amplification, add to Q1062 base, to adjust their working voltage. QqZservice manual download site
QqZservice manual download site
Maintenance and repair methods QqZservice manual download site
QqZservice manual download site
In the failure of the camera, power supply circuit fault ratio is larger. The failure phenomenon, main show is: 1. The electrical switches can't boot, power indicator light is not bright, all control key doesn't work; 2. Electrical switches, power indicator light is shining is extinguished, machine no action; 3. Use ac adapter, battery, deficiency of video 10 minutes the alarm and automatically shut down. This failure commonly known as "the battery is not durable. QqZservice manual download site
The failure phenomenon is not only related to the power circuit itself, and the control circuit and system and so on also have connection: when the system control circuit failure, sometimes also can appear the phenomenon, so in the maintenance and repair work, should first determine whether the power supply circuit fault, roughly to distinguish the fault parts, then, to check whether the battery or ac adapter is normal. QqZservice manual download site
1. Don't boot, the maintenance of all control key doesn't work QqZservice manual download site
The fault is one of the most common failures for the camera. Causes of this kind are: (1) the power supply circuit itself has a fault and make the power supply output voltage of all stripes are zero; (2) the system control circuit faults and make power supply circuit can't work normally open. This paper mainly introduces the power supply circuit fault maintenance.
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