The machine image shows normal most of digital video circuit work normally. a9Hservice manual download site
 a9Hservice manual download site
Can't go into digital stunt working status could be control interface circuit. a9Hservice manual download site
 a9Hservice manual download site
Boot repair, testing mode switch with each button contact, found that all the switch contacts are on and off in good condition. Test IC312 (MNl882010VON) digital control interface chip pin voltage and waveform are normal. Analysis the machine circuit, the digital circuit is the establishment of the special features will IC312 33 feet ground, another form of digital function also is so, roughly 35 feet grounded in order to establish such as the static stunt, 36 feet ground to delimit as stunt, (4) feet grounded stunt to mix, 38 feet grounded for a wipe, mixed stunt run, 39 feet ground for the establishment of the electric digital zoom mode. Therefore, first remove the attachment of FP6701, connect FP30139 feet with short line directly on the ground, and then respectively in turn IC312 35, 36, 37, 38, short 34 feet on the ground. Found that this machine can build digital way, digital special effects can be normal. In this way, push button switch is good, and the digital interface circuit of righteousness trouble-free. Visible only between FP3001 FP6701 socket connection has a problem, try deleting the wires, the results showed that 15 wire more than half have break. With dedicated row line instead of on a computer, should be directly welded to the FP3001 ~ of the solder joint on the back of the FP6701, installed again, the way function switches, digital function - everything is recovery.a9Hservice manual download site