Bist Check; Playback System Check; Preparations For Playback; Ic301 Trx (Rf) Pb Bist Check - Sony DSR-250 Service Manual

3-4-2. BIST Check

Switch setting:
LCD panel ...................................................................... Open

1. Playback System Check

1-1. Preparations for Playback

Order Page Address Data
1
2
3 0 01 01
4 C 42 00
5
Note: Perform the following checks in the playback mode.

1-2. IC301 TRX (RF) PB BIST Check

Order Page Address Data
1 3 70 04
2 3 70 00
3 3 73
4 3 74
5 3
Procedure
Set the MODE switch to VTR
position.
Connect the adjustment remote
commander and set the HOLD
switch to ON (SERVICE)
position.
Set the data.
Set the data, and press PAUSE
button.
Playback the BIST check tape.
(XH5-6 (NTSC), XH5-6P (PAL))
Procedure
Set the data, and press PAUSE
button.
Set the data, and press PAUSE
button.
Check that the data is equal to
either of the following values.
And memorize the case number
of the value.
NTSC model:
63 (Case1), C5 (Case2),
75 (Case3), D3 (Case4),
59 (Case5), FF (Case6)
PAL model:
86 (Case1), AA (Case2),
90 (Case3)
Check that the data is equal to
the following value which case
number is equal to that of
address 73.
NTSC model:
84 (Case1), 55 (Case2),
07 (Case3), D6 (Case4),
01 (Case5), D0 (Case6)
PAL model:
35 (Case1), 33 (Case2),
B6 (Case3)
If the data of address 73 and
address 74 are correct, IC301
TRX (RF) playback system is
normal.

1-3. IC301 AUD (ABUS) PB BIST Check

Order Page Address Data
1 3 11
2 3 12
3 3 12
4 3 13
5 3 14
6 3 15
7 3

1-4. IC301 VFD PB BIST Check

• EX Y BIST Check
Order Page Address Data
1 3 12
2 3 12
3 3 13
4 3 14
5 3 15
6 3
5-72
Procedure
04 Set the data, and press PAUSE
button.
08 Set the data, and press PAUSE
button.
00 Set the data, and press PAUSE
button.
03 Set the data, and press PAUSE
button.
Check that the data is the
following value.
NTSC model: 41
PAL model: 2D
Check that the data is the
following value.
NTSC model: 81
PAL model: 7C
If the data of address 14 and
address 15 are correct, IC301
AUD (ABUS) playback system
is normal.
Procedure
10 Set the data, and press PAUSE
button.
00 Set the data, and press PAUSE
button.
04 Set the data, and press PAUSE
button.
Check that the data is the
following value.
NTSC model: FB
PAL model: 54
Check that the data is the
following value.
NTSC model: F4
PAL model: ED
If the data of address 14 and
address 15 are correct, IC301
EX Y playback system is
normal.