Sony DVP-FX730 / DVP-FX735 Service Manual ▷ View online
-E
DVP-FX721/FX730/FX735
6-2. FRONT MICON PIN FUNCTION (MAIN BOARD U14: Z8F0823)
Pin No.
Name
I/O
Description
1
PB1/ANA1
I
Key input 0
2
PB2/ANA2
I
Key input 1
3
PB3/CLKIN/ANA3
-
No connection
4
VDD
-
P3V3 power
5
PA0/T0IN/T\0\O\U\T\
I
Muting signal input
6
PA1/T0OUT
-
No connection
7
VSS
-
Ground
8
PA2/DE0
I
ENTER key input
9
PA3/C\T\S\0\
O
System power enable
10
PA4/RXD0
I/O
TXD
11
PA5/TXD0
I/O
RXD
12
PA6/T1IN1/T\1\O\U\T\
-
CHARGE LED control
13
PA7/T1OUT
O
Volume control PWM output
14
R\E\S\E\T\
I
Reset input
15
DBG
I/O
Debug
16
PC0/ANA4/CINP/LED
I
Adapter detection
17
PC1/ANA5/CINP/LED
I
Power on detection
18
PC2/ANA6/LED
I
Charge detection
19
PC3/COUT/LED
I
Earphone detection
20
PB0/ANA0
I
Battery input
7-1E
DVP-FX721/FX730/FX735
SECTION 7
ELECTRICAL ADJUSTMENT
This section describes procedures and instructions necessary for
adjusting electrical circuits in this set.
adjusting electrical circuits in this set.
Instruments required:
1) Color monitor TV
2) Oscilloscope 1 or 2 phenomena, band width over 100 MHz,
1) Color monitor TV
2) Oscilloscope 1 or 2 phenomena, band width over 100 MHz,
with delay mode
3) Frequency counter (over 8 digits)
4) Digital voltmeter
5) Standard commander (RMT-D191)
6) DVD reference disc
4) Digital voltmeter
5) Standard commander (RMT-D191)
6) DVD reference disc
HLX-504 (J-6090-088-A) (single layer) (NTSC)
HLX-505 (J-6090-089-A) (dual layer) (NTSC)
7-1. STANDARD VIDEO LEVEL
1. Checking Video Output Level
<Purpose>
This checks whether video output level satisfy the NTSC standard.
If it is not correct, the brightness will be too large or small.
This checks whether video output level satisfy the NTSC standard.
If it is not correct, the brightness will be too large or small.
Mode
Play
Signal
Check the color-bar (100%) signal on DVD
reference disc
reference disc
Measurement Point
LINE OUT (VIDEO) connector
(75 Ω terminated)
Measuring Instrument
Oscilloscope
Specification
1.00 ± 0.05 Vp-p
Checking method:
1) Confirm that the video output level is 1.00 ± 0.05 Vp-p.
1) Confirm that the video output level is 1.00 ± 0.05 Vp-p.
1.00 ± 0.05 Vp-p
Fig 7-1
-1
DVP-FX721/FX730/FX735
SECTION 8
TROUBLESHOOTING
8-1. ELECTRICAL TROUBLE SHOOTING GUIDE
No power on
by adaptor
No power on
by battery
Is adaptor
out 9.5V?
YES
NO
Is P1 OK?
Replace P1
Is D2 OK?
NO +3.3V
NO P_3V3
NO +1.8V
Is U1 OK?
Replace U1
Is Q6 OK?
Is U1 OK?
Replace Q6
NO LCD
power
Replace U1
Is U2 OK?
Replace U2
Replace D2
Replace adaptor
Is battery OK?
Replace Q2
Is Q2 OK?
Replace battery
AUDIO OUT ABNORMAL
SPEAKER ABNORMAL
Is J5, J6 or CN1, CN2
OK?
Replace J5, J6 or
CN1, CN2
Replace U8
Replace U4 (MT1389LP)
Replace speaker
Is U8 OK?
Is speaker OK?
Check audio jack & mode
Check U11
Check U15
Check signals from
U4 (MT1389LP)
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
1. A. Power (DC-DC Converter) circuit
B. Audio out abnormal
C. Speaker abnormal
Is U1 OK?
NO +5V
Replace U1
NO
YES
Replace U12
NO
Replace U9
NO
Is USB_VCC
OK?
YES
Is AVCC
OK?
YES
Is U3 OK?
Replace U3
NO
YES
-2
DVP-FX721/FX730/FX735
VIDEO OUT ABNORMAL
OPEN/CLOSE ABNORMAL
NO CHARGING
Is 9.5V OK?
Check P1
Is Q2, U3 OK?
Replace Q2, U3
Is U1 OFF?
Replace U1
Is U14 OK?
Replace U14
Check SW2 & SW3
Check the connection of part
Check traverse
PICTURE ABNORMAL
DISC ERROR
Check video jack J7 & mode
Check the disc
Check disc
Check the traverse
Check traverse
Check the U6 (SDRAM)
Refer to servo part
Refer to servo part
Check LC filter
Check video signals from
U4 (MT1389LP)
YES
YES
YES
D. Video out abnormal
G. Open/close abnormal
H. Charging circuit
E. Picture abnormal
F. Disc error
NO
NO
NO
NO
Refer to servo part
Is Q1 OK?
Replace Q1
YES
NO
Is J2 OK?
Replace J2
YES
NO
Click on the first or last page to see other DVP-FX730 / DVP-FX735 service manuals if exist.