XV-DVR9H
121
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Detectable DSP Errors
The following conditions are assumed,
in order to eliminate causes other than "DSP-assy" and "between DSP-assy and microcomputers".
• Electric power is correctly supplied to DSP-assy.
• The SPDIF signal is coming to the input port of DIR.
• There is no audio output from DSP-assy, or audio output is unusual.
• ERR_0 : –Cannot receive data from DIR–
→
Communication fault has occurred somewhere between DIR (IC8201 PinNo.32 CDTO)–Level Shifter (IC8702)–
µ
-com
(IC5501 PinNo.58 DIRDO).
→
Communication fault has occurred somewhere between the
µ
- com-port (*1) which has sent the signal and each IC.
• ERR_1 : –Cannot receive data from DSP–
→
Communication fault has occurred somewhere between DSP (IC8501 PinNo.144 MISO)–Level Shifter (IC8702)–
µ
-com
(IC5501 PinNo.24 DSPDO).
→
Communication fault has occurred somewhere between the
µ
-com-port (*1) which has sent the signal and each IC.
→
Communication fault has occurred somewhere between the DIR and DSP.
• ERR_2 : –There is no return value of HREQ.–
→
Communication fault has occurred somewhere between DSP (IC8501 PinNo.3 HREQ)–Level Shifter (IC8702)–
µ
-com
(IC5501 PinNo.59 DSPHREQ).
→
Communication fault has occurred somewhere between the
µ
-com-port (*1) which has sent the signal and each IC.
→
Communication fault has occurred somewhere between the DIR and DSP.
• ERR_3 : –ERR information from DSP–
→
Communication fault has occurred somewhere between the
µ
-com-port (*1) which has sent the signal and each IC.
(especially the fault inside DSP)
→
Communication fault has occurred somewhere between the DIR and DSP.
• ERR_4 : –DECOMUTE continues being LOW(MUTE).–
→
Communication fault has occurred somewhere between DSP (IC8501 PinNo.21 PB12 MUTE)–Level Shifter (IC8702)–
µ
-com
(IC5501 PinNo.60 DECMUTE).
→
Communication fault has occurred somewhere between the É com-port (*1) which has sent the signal and each IC.
→
Communication fault has occurred somewhere between the DIR and DSP.
• INFO_0 : –DIRERR is HIGH (UNLOCK) in digital function.–
If DIRERR continues being HIGH (UNLOCK) without the above-mentioned error display.
µ
-com
• INFO_1 : –DSPMUTE is LOW (MUTE).–
If DSPMUTE continues being LOW (MUTE) without the above-mentioned error display.
Communication fault has occurred in somewhere between
µ
-com (PinNo.62 XDSPMUTE)–connector (CN8011 No.19 MUTEOUT).
• INFO_2 : –Loading 88.2kHz/96kHz PCM–
DSP function is limited when this information is displayed.
Notes :
Only the high priority error (near to ERR_0) is displayed when the multiplel errors have occurred.
When the analog audio output of a DSP module is unusual but the above error information is not displayed, the fault is probably in the
CODEC IC (IC8401) and the peripheral circuits.
As the
µ
-com has not received data from the CODEC IC, it cannot detect the fault and display the error information.
D I R E R R - U M
FL
FL
FL
FL
FL
D S P E R R - U M
H R E Q
- U M
D S P
N
-
G
U M
D M
T
U
E
-
M
FL
D S P
O K -
M
U
FL
D S P
O K -
M
*
"U", "M" display below is a sample.
Those character display ON/OFF depends on the state.
FL
D S P
O K -
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