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Philips SD-5.31SL Service Manual Page 53

Dvd-video player, dvd module sd-5.31sl.
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Circuit Descriptions, List of Abbreviations, and IC Data Sheets
9.3.5
Power Supply (diagram M7)
1800
7814
12 V STBY
20
+12 V
7807
+12 V
21
+12 V
6803
+12 V
+5 V
19
+3.3 V
18
17
+3.3 V
Figure 9-9 Power Supply Block Diagram
Table 9-4 Normal operating conditions
Voltage
Input voltage (VDC / V )
name
Min.
+3.3V
3.135
+5V
4.75
+12V
10.80
+12VStby
10.80
Power sequence timing
The module operates in "power-on", "power-off", and "standby"
modes. In the standby mode, only the disc-in detection circuit
is powered by the +5VSTBY (derived from +12VSTBY via
regulator 7814). When the user slots in a disc, it will be
automatically detected and the Front Panel controls (from the
DVD-player or TV-set) will be interrupted via the FRONT_IRQ
line from the ZiVA-pin 159. A Power wake-up signal is then sent
to turn on the Power module in order to apply power to the DVD
module. The disc will be pulled in, and reading begins.
TV/Audio/DVD
Set
+12 V
+5 V
+3 V3
POWER
MODULE
+12 V Stdby
Power wake-up
control
EJECT
SWITCH
Figure 9-10 Slot-in Auto Detect
To Diagram
+5 V
+5 V STBY
M6
+9 V
+9 V
M6 + M8
6808
M9 V
+9 V
M2
M9 V-1
+5 V
ALL
+3.3 V
M3 + M4 + M5
7804
+1.8 V
+1.8 V
M4
CL 36532043_015.eps
Power-on
Power-off
Typ.
Max.
3.30
3.465
< 0.10
5.00
5.25
< 0.10
12.00
13.20
< 0.10
12.00
13.20
< 0.10
DVD
Module
STEP DOWN
5 V Stdby
To Ali
GPIO Port
Opto-coupler
on Loader
Disc In
CL 36532043_003.eps
200503
The main power supplies to the module are 3.3 V, 5 V, 12 V,
and 12VSTBY (input via connector 1800).
On-board linear regulators are used to generate the 1.8 V
(required by the ZiVa-5), the +9 V (required by the motor
drivers), and the +5VSTBY (required by the audio muting
circuitry).
The front-end section mainly uses the 5 V and 9 V, while the
back-end section mainly uses the 3.3 V and 5 V.
See table for the normal operating conditions.
210503
Ripple noise volt-
Current consumption (IDC / mA)
age(VPP / mV)
Min.
50
50
200
200
Reset Circuit
Reset of the module is done via a separate "master reset"
circuit, which senses the +5V. The output is pulled to +3V3.
7500
4
NC
5
100n
To ensure proper power recycling of the module, the following
timing should be observed:
SD-5.31SL
Power-on
Stby
Typ.
Max.
1.2 A
1.3 A
0
400 mA
700 mA
0
300 mA
780 mA
0
60 mA
65 mA
65 mA
+3V3
+5V
10K
2
7402
1
202
162
ZIVA
3
7501
4u7
SPDIF
12
7600
DAC
24
1852
Figure 9-11 Reset circuit
9.
EN 53
7200
IDE Reset
50
ALI
53
7203
Discrete
Reset
CL 36532043_004.eps
020603

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