Ad Data Check; If Status - Yamaha RX-V420 Service Manual

11. AD DATA CHECK

This menu is used to display the A/D conversion value of the main CPU which detects panel keys of the main unit and
protection functions in % using the sub-menu. (Reference voltage 5V as 100%) During signal processing, the condition
before execution is maintained.
When in 0/1/2 page, it is not possible to operate the keys of the main unit because the values of all keys are detected. During
signal processing, the condition before execution of this menu is maintained.
[Table 1]
Display K0
00 SEEK MODE
27 SEEK START
3F EON
5A RDS MODE
73 –
8C –
A7 –
FF KEY OFF

12. IF STATUS

Using the sub-menu, the status data is displayed one after another in the hexadecimal notation.
During signal processing, the status before execution of this menu is maintained.
IST (Internal status) [REMOTE CONTROL CODE: –]
Indicates the status information of the microprocessor.
<1st byte> Digital input/output setting value
Upper 4 bits: REC OUT selected/lower 4 bits: INPUT selected
Numeric Selection
value
0 NONE
1 FRONT (VIDEO AUX)
2 OPT1 (MD/CDR)
3 OPT2 (DVD)
DC/PS (Detection of the protection function) [REMOTE CONTROL CODE: 7A-0B
(CD SKIP-)]
DC: DC detect protection value (Normal value: 3 to 35)
PS: Power voltage protection value (Normal value: 120 to 170)
* If DC or PS is out of the normal value range, the protection function activates
to turn off the power relay.
IMP/PL (Detection of impedance/Power limit) [Remote control code: –]
KY2: Detection of impedance switch
PL: The value of the power limit
0/1/2 (Panel key of main unit) [Remote control code: –]
A/D of the key fails to function properly when the standard value is deviated by
±4%. In this case, check the constant of partial pressure resistor, solder
condition, etc. Refer to table 1.
K1
MEMORY
TUNING MODE
FM/AM
EDIT
A/B/C/D/E
PRESET/TUNING ∞ INPUT ∞
§ PRESET/TUNING 6CH INPUT
KEY OFF
5th byte
4th byte
3rd byte
2nd byte
1st byte
Numeric Selection Numeric
value value
4 OPT3 (D-TV/CBL) 8
5 OPT4 9
6 OPT5 A
7 OPT6 B
RX-V420/RX-V420RDS/HTR-5440/HTR-5440RDS
K2
§ PROGRAM
PROGRAM ∞
EFFECT
INPUT MODE
§ INPUT
KEY OFF
* Numeric values in the figure example are for reference.
Selection Numeric
value
COAX1 (CD) C
COAX2 D
COAX4
COAX5
Selection
COAX3
RF
22