Main Board - Philips MX2500/01 Service Manual

8-1

MAIN BOARD

TABLE OF CONTENTS
Internal IC Diagram ......................................................... 8-1
Voltages List .................................................................... 8-2
Circuit Diagram(1) ........................................................... 8-3
Circuit Diagram(2) ........................................................... 8-4
PCB Layout Top View ...................................................... 8-5
PCB Layout Bottom View ................................................ 8-6
Electrical Parts list ........................................................... 8-7
ES6628F INTERNAL IC DIAGRAM
DVD/CD
Motor
OPU
Motor Driver
ES6603
RF Amp
8/16-MB
DRAM
ES6628
EEPROM Vibratto-II
ROM/Flash
AM5868S INTERNAL IC DIAGRAM
MUTE BIAS VINTK OP1N+ OP1N- VINLD GND
28 27
26 25 24 23 22
GND
10K -
+
MUTE
+ -
25K
Thermal
Shut down
25K
+ -
10K
10K
-
+
2 3 4 5 6
1
VINPC OP2N+ OP2N- VINSL+ OP2OUT FWD REV
TDA8924TH INTERNAL IC DIAGRAM
handbook, full pagewidth V DDA2 V DDA1
3 10
9
IN1−
INPUT PWM
8 STAGE MODULATOR
IN1+
mute
11
SGND1
STABI
7
OSC
OSCILLATOR MANAGER
6
MODE MODE
2
SGND2
mute
5
IN2+
INPUT PWM
4 STAGE MODULATOR
IN2−
1 12
V SSA2 V SSA1
8-1
Video
T V Display
Audio DAC Speakers
Audio ADC
Microphone In
S/PDIF
A/V Receiver
VFD Panel
VFD Driver
IR Remote
VCTL OP1OUT VCC2 VOLD- VOLD+ VOTK-
VOTK+
20 19 18 17 16 15
21
Vcc2
GND
15K
10K
-
Spindle Actiator
Driver(4X) Driver(6X)
+
Vcc2
Vcc2
Vcc1
+
-
25K
Sled Actiator
Driver(6X)
Driver(4X)
Pre-DRV TRY
DRIVER
PGND
Vcc1
7 8 9 10 11 12 13 14
VCCL VOTR- VOTR+ VOSL+ VOSL- VOFC+ VOFC-
V DDP2 V DDP1
STABI PROT
18 13 23 14
15
BOOT1
RELEASE1
DRIVER
HIGH
SWITCH1
CONTROL
16
AND
OUT1
ENABLE1
HANDSHAKE
DRIVER
LOW
V SSP1
TEMPERATURE SENSOR TDA8924TH
TDA8920TH
V DDP2
CURRENT PROTECTION
22
BOOT2
ENABLE2 DRIVER
HIGH
CONTROL
21
SWITCH2
AND OUT2
HANDSHAKE
DRIVER
RELEASE2
LOW
24 19 17 20
MBL461
V SSD V SSP1 V SSP2
HW