Dsp Ram Check; Sum/Ver/Port - Yamaha DSP-AX2 Service Manual

DSP-AX2

12. DSP RAM CHECK

This menu is used to self-diagnose whether or not YSS928 (IC501 of DSP circuit board) and external
RAM (IC502 of DSP circuit board) are connected properly.
During signal processing, the status before execution of this menu is maintained.
12.DSP RAM CHK
NoEr
13. SUM/VER /PORT
There are four sub-menu items.
Indicates the program version, checksum, specified port of the microprocessor (IC526 of the function
circuit board).
The checksum is obtained by adding data for every 16 bits for each program area and expressing the
result as a 4-figure hexadecimal data.
The signals are processed using EFFECT OFF. (The L/R signals are output using ANALOG MAIN
BYPASS setting.)

13.SUM/VER/PORT

VER. XXXXXXXX
13.SUM/VER/PORT
A:XXXX P:XXXX
13.SUM/VER/PORT
2:XXXX M:XXXX
13.SUM/VER/PORT
PORT:00000000
0 0 0 0 0 0 0 0
PORT
7 6 5 4 3 2 1 0
bit
25
[Remote control code: 7A—0A (CD SKIP +)]
Checks the address bus and the data bus, and indicates the connection condi-
tion.
"NoEr" appears when no error is detected.
Version [Remote control code: 7A—0D (CD REW)]
Release 1 figure / Main 2 figures / DSP 2 figures / communication 1 figure /
Boot manufacture 1 figure / Boot 232C 1 figure
Checksum [Remote control code: – – – – ]
A: All
P: Program area
Checksum [Remote control code: – – – – ]
2: Boot 232C section
M: Boot maker section
Check of port settings for judging microprocessor function
[Remote control code: – – – – ]
(Caution 1)
Tuner mode 0 Tuner mode 1
0 0
0 1
1 0
1 1
Indicate Function
Bus being checked
WAIT
No error detected
NoEr
Short or open of data bus
DATA
Short or open of address bus
ADDR
Tuner mode 0 (Caution 1)
Tuner mode 1 (Caution 1)
RDS with (1) / without (0)
Model type: DSP-AX2 (1) / RX-V3000 (0)
ZONE with (1) / without (0)
VIDEO format: PAL (1) / NTSC (0)
Head phone: Unconnected (1) / connected (0)
Tuner: Not stereo (1) / stereo (0)
Tuner frequency
AM : 531-1611kHz/9kHz FM : 76.0-90.0MHz/100kHz
AM : 531-1611kHz/9kHz FM : 87.5-108.0MHz/50kHz
AM : 530-1710kHz/10kHz FM : 87.5-107.9MHz/200kHz
As set by FREQUENCY STEP switch
(J)
(A, L, B, G)
(U, C)
(R, T)