Yamaha RX-V2065 - AV Network Receiver, Service Manual

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RX-V2065/HTR-6295
RX-V2065/HTR-6295
8. MANUAL TEST
The built-in noise generator of DSP outputs the test noise through the channels specified by using the sub-menu.
The noise frequency for LFE is 30 to 80 Hz. Other than that, the noise frequency is 500 Hz to 2 kHz.
TEST ALL
The test noise is output from all channels.
8 . T E S T A L L
9. A/D DATA CHECK
This menu is used to display the A/D conversion value of the microprocessor which detects panel keys of this unit and
protection functions by using the sub-menu.
When K0/K1 menu is selected, keys become non-operable due to detection of the values of all keys.
However, it is possible to advance to the next main menu by turning the “PROGRAM” knob of this unit.
* The figures in the diagram are given as reference only.
PS1/PS2
PSx: Power supply voltage protection detection
PS1
Voltage detects: AC_BL, AC_12, AC_5, ±12 and +5V
Normal value: 38 to 128
(Reference voltage: 3.3 V=255)
PS2
Voltage detects: -5 and +5I
Normal value: 31 to 125
(Reference voltage: 3.3 V=255)
* If PS1 or PS2 becomes out of the normal value range, the protection function works to turn off the power.
P S 1 : 0 8 7 2 : 0 7 7