Integra DTR-30.1 Service Manual page 3

QQ
3 7 63 1515 0
DEBUG MODE-2
DSP DEBUG MODE-2/3
Content of Display (Continued)
7 DSP Port Status
This figure is displayed in hexadecimal form.
If this is transformed to binary form, each bit indicates
the following DSP port status. Refeo to <Fig-1>.
bit 0 = NIC
bit 1 = DEC
bit 2 = BUSY
bit 3 = Exec Wait
8
DSP Sequence
00 - FE = Not Free
2D = Mute control
FF = Free
9
DSP Detect Format
P = PCM (Analog)
D = Dolby Digital
d = DTS
A = AAC
S = DSD
p = Dolby Digital+
T = TrueHD
H = DTS-HD High Resolution
M = DTS-HD Master Audio
TE
L 13942296513
? = Unknown Format
Troubleshoot by DSP DEBUG MODE
1. This debug mode will be useful in digital audio no sound or sound drop-out trouble.
2. Check information on FL display, then identify bad parts, and replace or resolder it.
3. Remdies Written below are of typical case. So, more detailed check may need in actual cases.
4. Before replace ICs below, resolder the pins first to save resources.
NOTE
Function
MPU (Main microprocessor)
DSP
DIR and DAC
Flash ROM
SDRAM
Audio processor (Selector/ Volume)
Digit No.
Symptom on FL Display
on FL
1
"E" is displayed
www
4
Displayed sampling frequency
is different from input signal.
9 Displayed audio format is
.
different from input signal.
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(Normal state)
(Abnormal state)
Circuit No.
Q701
Q201
Q301
Q282
Q281
Q5501
Cause of Trouble
No input signal to DIR.
No input signal to DIR.
x ao u163
y
No input signal to DIR.
i
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2 9
8
10 DSP Decode
o = Decode OK
x = Decode NG
11
Mute output device
This figure is displayed in hexadecimal form.
If this is transformed to binary form, each bit indicates
the IC which outputs error to microprocessor, which output
Audio Mute. Refer to <Fig-1>.
<Fig-1>
Transform
Hexadecimal
0 = 0 0 0 0
1 = 0 0 0 1
2 = 0 0 1 0
4 = 0 1 0 0
8 = 1 0 0 0
Q Q
3 6 7 1 3 1 5
Schematic Diagram
PART-5
PART-13
PART-5
PART-13
PART-13
PART-3
co
.
TX-SR607/DTR-30.1
9 4 2 8
Binary
bit 0: Selector IC (Q5501)
bit 1: Effector
bit 2: DSP (Q201)
bit 3: DIR (Q301)
0 5 8 2 9 9 4 2 8
Remedy
1. Find out which digital input does not work.
2. Confirm where the digital waveform stops
between the digital input and DIR.
3. Resolder pins of the bad part or replace it with
new one.
m
The same as above.
The same as above.
9 9
9 9