Sony DNW-A75 Maintenance Manual page 132

4-2. TAPE Maintenance Mode (M0)
4-2-5. AUDIO/VIDEO CHECK Mode (C2)
Screen display samples
In case of normal
AUDIO/VIDEO CHECK MODE
C25:DPR-119 DIAG INFO
DPR-119 DIAG. OK!
INITIALIZE CHECK..
1.SDTI TX INIT. OK
2.AU FEED INIT. OK
SOMETHING CHECK..
OK
13.V-PACK CHECK.
In case of abnormal
AUDIO/VIDEO CHECK MODE
C25:DPR-119 DIAG INFO
DPR-119 DIAG. ERROR!
INITIALIZE CHECK..
1.SDTI TX INIT. OK
2.AU FEED INIT. OK
SOMETHING CHECK..
13.V-PACK CHECK. NG
LAST BYTE ERR 1
FRAME TOP ERR 1
GOP TOP ERR 1
FIFO PARITY ERR 1
INPUT PARITY ERR 1
Detail description of abnormal case
INITIALIZE CHECK:
The possible cause below is judged as an NG item.
. The target IC is defective.
. The foiled pattern on the board connecting target IC and
SY2 CPU is defective.
. The component part between target IC and SY2 CPU is
defective.
INITIALIZE CHECK
Screen display Target IC
1. SDTI TX IC213
2. AU FEED IC106
SOMETHING CHECK (13. V-PACK CHECK NG):
The possible cause below is judged as an ERR item.
. IC200 is defective.
. The foiled pattern on the board connecting IC200 and its
connected IC is defective. (at parity error only)
. The component part between IC200 and its connected IC
is defective. (at parity error only)
. Connected IC is defective. (at parity error only)
Parity error Ref. No. of IC connected to IC200
FIFO PARITY ERR IC204, IC205, IC208, and IC209
INPUT PARITY ERR IC1100 and IC1101 on DPR-118 board
4-42
Displays NG for failure item.
In case of NG,
the detail data is displayed.
Target IC's pin number
connected to SY2 CPU
Pins 5 to 14, 16, and 17
Pins 42 to 49 and 51 to 54
C26 : DPR-150 DIAG INFO
AUDIO/VIDEO CHECK MODE
C26:DPR-150 DIAG INFO
DPR-150 DIAG. OK!
This function informs the result of the self-diagnosis of the
DPR-150 board of BKNW-124. It is displayed when the
BKNW-124 option is installed.
When a failure occurs on the DPR-150 board, this function
guess the default IC but do not specified.
n
"ERROR" may be displayed as the diagnosis result even if
the boards except DPR-150 are defective.
An initial-verify and others check are available as the self-
diagnosis function.
. In the initial-verify, check the communication of the
communication bus (PAD0-7, STAT0-1, STRB, and CS)
between SY3 CPU and each IC on the DPR-150 board.
Initialization data is transferred from SY3 CPU to each IC.
After that, the initialization data set in each IC is read and
compared with the initialization data transferred at first.
. In the others check, a parity check and external memory
check are performed for the input signals of the follow-
ing ICs, and the result of the self-diagnosis of each IC is
displayed by reading from SY3 CPU.
Target IC for the diagnosis
Screen Target IC
No. display Ref. No. (IC name)
1, 11 SX DEC 0 IC300 (CXD9012AR)
2, 12 SX DEC 1 IC400 (CXD9012AR)
3, 13 SX DEC 2 IC500 (CXD9012AR)
4, 14 SX ENC 0 IC700 (CXD8973BR)
5, 15 SX ENC 1 IC900 (CXD8973BR)
6, 16 SX MEP IC800 (CXD8974AR)
7 SX MPEG0 IC702 (CXD9077BR)
8 SX MPEG1 IC906 (CXD9077BR)
9 SX MPEG2 IC606 (CXD9077BR)
a, 1a DIGI FIL IC603 (CXD9025R)
b SDTI CP IC30 * (CXD9139GF)
c MSP MOE IC1000 (XC4036XLA) Initial-verify only
*: When the DPR-150 board's board number suffix is -11, this IC
CXD9139GF is IC300 on the piggybacked DIF-109 board on to the DPR-
150 board.
Remarks
Initial-verify only
Initial-verify only
Initial-verify only
Initial-verify only
DNW-A75/A75P