Polar Electro DV-1010 User manual

Page 1
SERVICE MANUAL
DVD PLAYER
POLAR DV-1010, DV-1510,
DV-2010
(For MTK)

Page 2
Contents
Front cover ..............................................................................01-01
Contents.................................................................................. 02-02
Block diagrams for the DVD player ...................................... 03-08
Major functions of the IC of the DVD player ........................ 15-15
Maintenance procedures for the DVD player ........................ 16-23

Page 3
Block diagram for the operating principle of the DVD decoding board
+3.3V, +5V and ±12V stabilized power
supplies provided by the power board
Interface of the laser
head
RF preamplification
circuit
Digital servo processor
Control decoding single-chip
microcomputer MT1379
control.
Feeding motor
Focusing coil
Trace searching
coil
Principal axis
motor
Disc tray ingress and
egress controller
D6208
Audio output AV2388
Disc tray motor
drive
Focusing, trace searching and feeding servo
drivers
CD5954
VF digital-analog converter
N/P system encoder
Audio D/A converter
Video output

Page 4
Block diagram for the power supply part of the DVD player
Faceplate power
supply

12V
-
12V

5
V

3.3
V
~220V
Switch transformer
Switch tube control.
Filter by the filter capacitor after
diode rectification.
Power switch control
Switch tube IEA1522

Page 5
Block diagram for the faceplate part of the DVD player
Signals DATA, STB and
BCK of decoding board
output.
VFD display drive
Matrix circuit button
VFD screen
Faceplate
b
utton
AC 3.3V, +5V, -25V from power
board