Logitech Z906 Service Manual _top_ Online

Front left/right work, but rear channels are silent. Service Manual Diagnosis: The Z906 uses a TDA7294 amplifier chip for each channel. The manual includes the pinout for these chips. You will check for the presence of a negative voltage on pin 4 (V-) and a mute signal on pin 10. A broken trace on the mute line is a common manufacturing defect noted in the manual's errata.

Generally uses TAS5162 or TAS5342 high-performance Class D power stages. logitech z906 service manual

If the control console is acting up, turn the system off (Standby). Press and hold the Front left/right work, but rear channels are silent