Philips SD-5.31SL, Руководство по обслуживанию

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Circuit Descriptions, List of Abbreviations, and IC Data Sheets
EN 53 SD-5.31SL 9.
9.3.5
Power Supply (diagram M7)
Figure 9-9 Power Supply Block Diagram
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.
Table 9-4 Normal operating conditions
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.
Figure 9-10 Slot-in Auto Detect
Reset Circuit
Reset of the module is done via a separate "master reset"
circuit, which senses the +5V. The output is pulled to +3V3.
Figure 9-11 Reset circuit
To ensure proper power recycling of the module, the following
timing should be observed:
12 V STBY
+5 V STBY
+9 V
M9 V
M9 V-1
+3.3 V
+1.8 V
1800
20
21
19
18
7814
7807
6803 6808
7804
+12 V
+5 V
+12 V
+9 V
+12 V
+1.8 V
+3.3 V
+9 V
+12 V
CL 36532043_015.eps
210503
+5 V
M6
To Diagram
M6 + M8
M2
M3 + M4 + M5
M4
ALL
+5 V
+3.3 V
17
Voltage
name
Input voltage (VDC / V ) Ripple noise volt-
age(VPP / mV)
Current consumption (IDC / mA)
Power-on Power-off Power-on Stby
Min. Typ. Max. Min. Typ. Max.
+3.3V 3.135 3.30 3.465 < 0.10 50 1.2 A 1.3 A 0
+5V 4.75 5.00 5.25 < 0.10 50 400 mA 700 mA 0
+12V 10.80 12.00 13.20 < 0.10 200 300 mA 780 mA 0
+12VStby 10.80 12.00 13.20 < 0.10 200 60 mA 65 mA 65 mA
EJECT
SWITCH
Power wake-up
control
5 V Stdby
Opto-coupler
on Loader
To Ali
GPIO Port
+12 V Stdby
DVD
Module
TV/Audio/DVD
Set
Disc In
POWER
MODULE
STEP DOWN
+12 V
+5 V
+3 V3
CL 36532043_003.eps
200503
100n
4u7
ZIVA
SPDIF
DAC
1852
202
24
12
2 7500 7402 7200
7501
7600
7203
4
5 3
1
+5V
NC
+3V3
Discrete
Reset
162
50
53
ALI
IDE Reset
10K
CL 36532043_004.eps
020603