A/D Data Check; Ps1/Ps2; Dc/Th; Imp/Pl - Yamaha RX-V661 Service Manual

10. A/D DATA CHECK

This menu is used to display the A/D conversion value
of the microprocessor which detects panel keys of the
main unit and protection functions in using the sub-
menu.
During signal processing, the condition before execu-
tion is maintained.
When K0/K1 menu is selected, keys become non-op-
erable due to detection of the values of all keys. How-
ever, it is possible to move to the next DIAG menu by
turning the PROGRAM knob of the main unit.
* The figures in the diagram are given as reference
only.

PS1/PS2

PSx: Power supply voltage protection detection
PS1
Voltage detects: AC_BH, AC_BL, AC12, AC5,
+10, +5.3H and +XM (U, C
models)
Normal value: 43 to 80 (Reference volt-
age: 5.0 V=100)
PS2
Voltage detects: +12, -12, +5V, +5D, +5I and
+3.3D
Normal value: 35 to 55 (Reference volt-
age: 5.0 V=100)
* If PS1 and PS2 are out of the normal value range,
the protection function works to turn off the power.

DC/TH

DC: Power amplifier DC protection detection
Power amplifier DC (DC voltage) output is
detected.
Normal value: 2 to 14 (Reference voltage:
5.0 V=100)
TH: THM (Thermo protection detection)
Temperature of the heat sink is detected.
Normal value: 0 to 124 (Reference volt-
age: 5.0 V=255)
* If THM is out of the normal value range, the protec-
tion function works to turn off the power.

IMP/PL

IMP: 8 or 4 ohms impedance setup detection
IMP 8: 8 ohms setting
IMP 4: 6 ohms setting
PL: PLDET (Power limiter detection)
Power amplifier output voltage detection
The power amplifier output voltage is
detected and the power amplifier input
voltage is controlled.
PS1/PS2
PS1:061 2:043
DC:006 TH:107
TH/PL
IMP:8 PL:251
RX-V661/HTR-6060/DSP-AX761
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