Yamaha YHT-196 Service Manual

Also see for HTR-2064: Owner's manual

Contents

8-1. TEST ALLThe test noise is output to all channels.8. MANUAL TESTThe built-in noise generator of DSP outputs the test noise through the channels specified by using the sub-menu.9. A/D DATA CHECKThis menu is used to display the A/D conversion value of the microprocessor which detects panel keys and protectionfunctions by using the sub-menu.When “9-5. K1/K2” menu is selected, keys become inoperable due to detection of the values of all keys.However, it is possible to advance to the next menu by turning the “VOLUME” knob.* Numeric values in the figure are given as reference only.9-1. PS/DCPS: Power supply voltage protection detectionDetected: AC2, ±12A, S9, +7D, +5A, -VPDetection port: 93 pin (PS_PRT)Normal value: 101 to 155(Reference voltage: 3.3 V=255)DC: Power amplifier DC (DC voltage) output is detected.Detection port: 87 pin (DC_PRT)Normal value: 30 to 70(Reference voltage: 3.3 V=255)* If PS or DC becomes out of the normal value range, the protection function works to turn off the power.Test noisefor SUBWOOFER 30 Hz to 80 Hz, pink noisefor other than SUBWOOFER 500 Hz to 2 kHz, pink noise37HTR-2064/NS-B20/NS-C20/NS-SWP20HTR-2064/NS-B20/NS-C20/NS-SWP20