Inhaltsverzeichnis
Werbung
Verfügbare Sprachen
Verfügbare Sprachen
Fehlersuchdiagramme / Trouble Shooting Diagram
3. Audio Path
For the next test, the A/V-MUX Board must be connected to the DVD-
Monoboard.
Ref. #
Remark
21a
Audio MMA/AC3 Sinus On
Terminating the test: Disconnect
the DVD player from the mains
The level of the 1kHz-tone, which is generated by Service Test Level
±0.25V at the audio chinch sockets.
21a, must be 1.8V
rms
With the following commands, the Audio mute can be checked.
Ref. #
Remark
19a
Audio-Mute On
19b
Audio-Mute Off
4. Video Path
To check a large part of the video-path (DSM-LSI-DVP-Denc) a
colorbar can be generated via next commands:
Ref. #
Remark
23a
Colourbar DENC On
23b
Colourbar DENC Off
The Euro-AV-switching voltage can be 0V, 6V, 12V.
Check at testpoint F613 the output-voltage while using next com-
mands:
Ref. #
Remark
25a
LOW Level at EURO-AV-TV-(8)
25b
MEDIUM Level at EURO-AV-TV-(8)
25c
HIGH Level at EURO-AV-TV-(8)
5. Drive Mechanism
Ref. #
Remark
44
Reset for Drive Mechanism
–
Reference voltage Vref
–
I2S Interface B_BCLK
–
I2S Interface CL1
–
I2S Interface B_WCLK
–
I2S Interface Stopclk
–
I2S Interface B_Sync
–
I2S Interface B_V4
5.1 Disc Motor
Before switching on the disk motor the following measurements must
be carried out:
Ref. #
Remark
–
Stby control voltage
–
Stby control voltage invers
–
Motor control voltage
3 - 8
Testpoint
Value
F628, F629
see page 4-41
F630, F631
Testpoint
Value
F619
5V
F619
-8V
Testpoint
Value
F636, F639
see page 4-41
F642, F645
F646, F653
Testpoint
Value
F613
0V...0,5V
6V ±10%
F613
12V ±10%
F613
Testpoint
Value
–
2.5V ±0.3V
F91
F361
6MHz
F390
12MHz
F362
HIGH
F391
HIGH
F358
HIGH
9201
HIGH
Testpoint
Value
U310
HIGH
F370
LOW
3V ±0.3V
F376
Disc Motor operating
Ref. #
Remark
39a
Disc motor on
–
Stby control voltage
–
Stby control voltage invers
–
Motor control voltage
–
Motor voltages A1...A3
–
FG pulse T1...T3
–
Voltage VH
–
Hall sensor voltage H1...H3
39b
Disc motor off
5.2 Radial Control
Ref. #
Remark
40a
Radial control on
40b
Radial control off
5.3 Sledge Control
Ref. #
Remark
–
Standstill
41a
Pick up unit moves outwards
41b
Pick up unit moves inwards
5.4 Tray Control
Ref. #
Remark
–
Standstill
43b
Disc tray open
43a
Disc tray close
5.5 Focus
Ref. #
Remark
38a
Focus on
38b
Focus off
5.6 RF Part
Play back the DVD disc.
Ref. #
Remark
–
Diodes outputs A, B, C, D
–
Diodes outputs E, F
–
DVDALAS outputs RFO DC
–
DVDALAS outputs O-A, O-B
DVDALAS outputs O-C, O-D
–
DVDALAS outputs S1, S2
GDV Modul 1
Testpoint
Value
–
U310
LOW
F370
HIGH
2.5V ±0.5V
F376
F368, F367
see page 4-41
F365
F281, F384
see page 4-41
F387
F381
3.3V
F369, F374
see page 4-41
F379, F380
F383, F386
–
Testpoint
Value
F24, F32
4.3V
Testpoint
Value
4.5V ±0.5V
F104, F105
F104–F105
10V
PP
(balanced)
2.7V ±0.3V
F85, F97
2V ±0.3V
F84, F87
2V ±0.3V
F90, F93
Testpoint
Value
4.5V ±0.5V
F12, F81
F12–F81
8V
PP
(balanced)
Testpoint
Value
F27, F30
see page 4-41
4.3V ±0.5V
F27, F30
Testpoint
Value
F45, F49
2.6V ±0.2V
F50, F52
see page 4-41
2.5V ±0.2V
F55, F54
2.5V ±0.2V
F53
see page 4-41
25mV ±10mV
F59, F62
25mV ±10mV
F69, F72
25mV ±10mV
F75, F77
GRUNDIG Service
Werbung
Inhaltsverzeichnis
