XV-HTD540
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7.1.9 DSP TROUBLE SHOOTING
Detectable DSP Errors
The following conditions are premised,
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("COAX IN" RX0 & "OPT IN" RX3 & "DVD" RX7).
• There is no audio output from DSP-assy, or audio output is unusual.
• ERR_0 : –Cannot receive data from DIR–
→
Communication fault has occurred in somewhere between DIR(PinNo.32 CDTO)–Level Sifte(IC8702)–
µ
-com(PinNo.80 DIRDO).
→
Communication fault has occurred in somewhere between the
µ
- com-port(*1) which has sent the signal to IC, and each IC.
• ERR_1 : –Cannot receive data from DSP–
→
Communication fault has occurred in somewhere between DSP(PinNo.144 DSDO)–Level Shifteer(IC8702)–
µ
-com(PinNo.50 DSPDO).
→
Communication fault has occurred in somewhere between the
µ
-com-port(*1) which has sent the signal to IC, and each IC.
→
Communication fault has occurred in somewhere between the DIR and DSP.
• ERR_2 : –There is no return value of HREQ.–
→
Communication fault has occurred in somewhere between DSP(PinNo.3 HREQ)–Level Shifteer(IC8702)–
µ
-com(PinNo.82 DSPHREQ).
→
Communication fault has occurred in somewhere between the
µ
-com-port(*1) which has sent the signal to IC, and each IC.
→
Communication fault has occurred in somewhere between the DIR and DSP.
• ERR_3 : –ERR information from DSP–
→
Communication fault has occurred in somewhere between the
µ
-com-port(*1) which has sent the signal to IC, and each IC.
(especially the fault inside DSP)
→
Communication fault has occurred in somewhere between the DIR and DSP.
• ERR_4 : –DECOMUTE continues being LOW(MUTE).–
→
Communication fault has occurred in somewhere between DSP(PinNo.21 PB12)–Level Shifteer(IC8702)–
µ
-com(PinNo.86 DECMUTE).
→
Communication fault has occurred in somewhere between the É com-port(*1) which has sent the signal to IC, and each IC.
→
Communication fault has occurred in somewhere between the DIR and DSP.
Although the followings are not errors, since these are helpful for problem solution, displayed separately.
• ERR_5 : –DIRERR is HIGH(UNLOCK) in digital function.–
If DIRERR continues being HIGH(UNLOCK) without the above-mentioned error display.
→
Communication fault has occurred in somewhere between DIR(PinNo.36 INT0)–Level Sifter(IC8702)–
µ
-com(PinNo.77 DIRERR).
• ERR_6 : –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.86 DSPMUTE)–connector(CN8011andCN8012 No.19MUTEOUT).
Notes :
If the error is fundamental, a priority will become high.
And the error with a high priority is displayed.
Since the
µ
-com has not received data from CODEC, a CODEC error is undetectable.
However, when the analog audio output of a DSP module is unusual without error information,
we can surmise that CODEC (or its circumference) is out of order.
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
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U M
D M
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Содержание XV-DV8
Страница 26: ...XV HTD540 26 1 2 3 4 1 2 3 4 C D F A B E 3 6 DVDM ASSY 3 4 A 3 4 3V REG A 2 4 RSX201L 30 RSQ035P03 AD AD AD ...
Страница 33: ...XV HTD540 33 5 6 7 8 5 6 7 8 C D F A B E B 2 2 AUDIO DATA SIGNAL ROUTE AD ...
Страница 40: ...XV HTD540 40 1 2 3 4 1 2 3 4 C D F A B E 3 13 AF 3 4 ASSY D 3 4 D 1 4 TV TV TX L1 L1 FL FL TX FL FL FL JA3001 ...
Страница 45: ...XV HTD540 45 5 6 7 8 5 6 7 8 C D F A B E I J LOMB ASSY XWZ3857 J SSRB ASSY XWZ3856 I CN123 A 1 3 CN31 ...
