DEBUG MODE-2
DTR-7.8
This debug mode will help in digital audio no sound trouble.
Check information on FL display and the related devices or circuits.
Trouble Shooting by DEBUG MODE
Symptom on display
Cause
Check
"E" is displayed
No input signal to DIR.
Related devices from digital input to DIR.
Note:
MPU is short for Micro Processor: Q7001.
1st DSP: Q3401, 2nd DSP: Q3501, 3rd DSP: Q3601
DIR: Q3041
DAC: Q3701, Q3721, Q3741, Q3761, Q3781
Flash ROM: Q3451, Q3551, Q3651
SDRAM: Q3461, Q3471, Q3561, Q3661
Audio Selector: Q4029
Displayed freq. is different
from input
No input signal to DIR.
Related devices from digital input to DIR.
Displayed format is different
from input
No input signal to DIR.
Related devices from digital input to DIR.
Displayed format is different
from input
Input signal to DSP is no good.
Related devices from DIR to DSP.
"x" is displayed
Interface between DSP and MPU is
no good.
Related devices from MPU to DSP.
Digit no
on FL
14
13
7
6
4
1
Content of display(Continued)
P = PCM (Analog)
D = Dolby Digital
d = DTS
S = DSD
p = Dolby
A = AAC
T = TrueHD
H = DTS-HD High Resolution
M = DTS-HD Master Audio
? = UNKNOWN
DSP Detect Format
13
o = Decode OK
x = Decode NG
DSP Decode
14
bit0 = NIC
bit1 = DEC
bit2 = BUSY
bit3 = Exec Wait
26 = Not Free
2F = Mute Control
FF = Free
DSP Port
10
Not Used(Slash)
9
-
DSP Sequence
11 12
04-0D = Boot
10-17 = Update Mode
20-33 = DSP Setting
FF
= Free
-
1st DSP Sequence
15 16
04-0D = Boot
10-17 = Update Mode
20-33 = DSP Setting
FF
= Free
-
2nd DSP Sequence
17 18
04-0D = Boot
10-17 = Update Mode
20-33 = DSP Setting
E0-E2 = Auto Speaker Setup
FF
= Free
-
3rd DSP Sequence
19 20
-
MPU MUTE Output Cause
19 20
-
Not Used
21 26
= Selector IC
= DSP
= Effector
= DIR
(Normal state)
(Abnormal
state )
bit0
bit1
bit2
bit3
= HDMI
= Auto Speaker Setup
= XM
= Speaker Config
bit4
bit5
bit6
bit7
8 CODEC CLOCK MODE
N = Normal
U = Up Sampling
H = High Sampling (Double Rate)
D = Down Sampling
Q = Quad Rate
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