Philips DVDR615 Service Manual

Circuit-, IC descriptions and list of abbreviations
EN 145DVDR615/69 9.
IC7311 TEA 1507 MOBO Board, Power Supply Control
Figure 9-15
BLOCK DIAGRAM
SUPPLY
MANAGEMENT
internal
supply
UVLO start
M-level
V
CC
1 2
3
GND
S1
CTRL
FREQUENCY
CONTROL
VOLTAGE
CONTROLLED
OSCILLATOR
LOGIC
LOGIC
OVER-
VOLTAGE
PROTECTION
OVERPOWER
PROTECTION
short
winding
soft
start
S2
OVER-
TEMPERATURE
PROTECTION
SQ R
UVLO
Q
MAXIMUM
ON-TIME
PROTECTION
POWER-ON
RESET
−1
VALLEY
TEA1507
100 mV
clamp
DRIVER
START-UP
CURRENT SOURCE
0.75 V
0.5 V
5
I
sense
6
DRIVER
MGU230
4
DEM
8
DRAIN
7
HVS n.c.
OCP
LEB
blank
I
ss
2.5 V
burst detect
Fig.2 Block diagram.
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Philips DVDR615 Specifications

Picture/Display

Aspect ratio	4:3, 16:9
D/A converter	10 bit, 54 MHz
A/D converter	10 bit, 54 MHz

Sound

D/A converter	24 bit, 96 kHz
A/D converter	24 bit, 96 kHz
Signal to noise ratio	90
Distortion and Noise (1kHz)	83 dB
Crosstalk (1kHz)	105 dB
Dynamic Range (1kHz)	83 dB

Power

Power supply	110V, 60Hz
Power consumption	27 W
Standby power consumption	< 4 W

Dimensions

Set dimensions (W x H x D)	435 x 285 x 65 mm
Set weight	3.5 kg
Packaging dimensions (W x H x D)	518 x 159 x 383 mm
Weight incl. Packaging	5.5 kg