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M9900MC Camera Self-Diagnosis Repairing Status Mode Circuit

Published:2011/7/26 1:54:00 Author:Robert | Keyword: Camera, Self-Diagnosis, Repairing, Status, Mode

M9900MC Camera Self-Diagnosis Repairing Status Mode Circuit
1.Repairing status mode.When the machine is in the repairing status mode, the TV sets and viewfinders' screen would display the data of the random access memory (RAM). The table 1 lists the RAM data's reading imformation and all the data is in hexadecimal mode for displaying.2.Data details in repairing status mode.When pressing the start/stop switch and the memory switch at the same time, after the power switch is connected, the TV sets' screen could display the detail information of No.1 to No.23 which is listed in table 2. And part of the data number's indicating imformation is listed after the list's contents. The picture shows the M9900MC camera self-diagnosis repairing status mode circuit.   (View)

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Xinke 5300A Power Amplifier Front And Central Sound-Channel Silent Repairing Circuit

Published:2011/7/24 10:07:00 Author:Robert | Keyword: Xinke, 5300A, Power Amplifier, Sound-Channel, Silent, Repairing

Xinke 5300A Power Amplifier Front And Central Sound-Channel Silent Repairing Circuit
This device is a universal AV power amplifier certified by Dolby. The device's all kinds of functions and operation display is managed by a CPU (UPD78042). The selected audio signal would be send to NJW1103 for decoding after the buffer, and it would output L, R, C S four channel signals. The first two signals would be send separately to a single-chip integrated power amplifier TDA7294 for amplification after the Dolby/direct selection, balance, volume control, pre-amplification (LM833). However the central and the surround channel signals would be amplified and volume controlled directly by the LM833 and then are send to the end integrated power amplifier for amplification (C is TDA7294 and S is TDA7265). Also when starting the CPU's MUTE port will send the squelch signal and then do the squelch for each TDA7294 and TDA7265 through the squelch circuit.   (View)

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Telephone repairing reference circuit

Published:2011/6/30 21:51:00 Author:zj | Keyword: Telephone, repairing

Telephone repairing reference circuit
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interphone circuit

Published:2011/5/17 5:13:00 Author:chopper | Keyword: interphone

interphone circuit
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Motherboard maintenance drawing board - the trigger circuit

Published:2011/4/26 3:29:00 Author:Ecco | Keyword: Motherboard , maintenance, drawing board, trigger circuit

Motherboard maintenance drawing board - the trigger circuit
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The circuit diagram of instrument headers moving coil disconnection repair

Published:2011/4/21 6:01:00 Author:Crystal Liu | Keyword: instrument headers moving coil disconnection repair , circuit diagram

The circuit diagram of instrument headers moving coil disconnection repair
Instrument headers moving coil disconnection repair circuit.   (View)

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Paliao ABS circuit

Published:2011/4/20 2:44:00 Author:Jessie | Keyword: ABS

Paliao ABS circuit
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Temperature compensation circuit of high-precision pressure signal conditioner MAX1457

Published:2011/3/23 19:56:00 Author:may | Keyword: Temperature compensation, pressure signal conditioner

Temperature compensation circuit of high-precision pressure signal conditioner MAX1457
Temperature compensation circuit of high-precision pressure signal conditioner MAX1457 is shown in the following diagram:   (View)

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