Philips AZ7900 - Blockdiagram

3-53-5
CS 46 650
TA2120FN
HEADPHONE AMP.
VCC
+A
SAA7324H
CD10
TDA1300T
HF-PREAMPLIFIER
L.P.F.
H.P.F.
+
LASER
SUPPLY &
PROTECT.
R2
D1
D2
D3
D4
R1
O5
O1
O3
O4
SILD
SCL
SDA
SILD
SCL
SDA
O6
Hf
D1
D2
D3
D4
D5
RFE HFIN
RESET
R2
D1
D2
D3
R1
LDonVddl LDON
H=Laser on
MI
+3
DISC
Laser
diode
PHOTO DIODE
ARRAY
TURNTABLE
MOTOR
TRACK
SERVO
FOCUS
SERVO
SLIDE
SERVO
D1 D2
R2R1
D3
VAM2103/08
CD-DRIVE
Monitor
diode
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.
L.P.F.L.P.F.
LDON
A/D-CONVERTER
SERIAL
INTERFACE
SERIAL
LOOPBACK
µP
INTERFACE
LCD
CONTROL PART
EBU
INTERFACE
RAM
ADDRESS.
SUBCODE
PROCESS.
MOTOR
CONTROL
OUTPUT
STAGES
ERROR
CORRECT.
FRONT END TIMING
DIGITAL PLL
SRAM
EFM
DEMOD.
Vref
KILL
PRE-PROC.
FUNCTION
CONTROL
BITSTREAM
DAC
VERSATILE
INTERFACE
AUDIO
PROCESS.
PEAK
DET.
P TMP47C422F
LCD DRIVER
CLOCK GEN.
& TIMING
MEMBRANE
KEYBOARD
TIMER/
COUNTER
ALU
ROMRAM
8.4MHz
I/O PORTS
Lo
LOLD
SL
(PWM signal)
SL FO RA
FO
(PWM signal)
RA (PWM signal)
SLIDE_IN
FOCUS_IN
DM±
Sldm±
Focus±
TRACK_IN
+3A +3
MPC17A50VM
SERVO DRIVER
SAWTOOTH
OSCILLATOR
LOW VOLTAGE
DETECTOR
VOLTAGE
DOUBLER
SQU. WAVE
GENERATOR
DM_IN
VLGVR CLK
DM
(FROM CD10)
CL saw VG VLG VR
CL
saw
+3
VG
+A
Track±
L.P.F.
L.P.F.
L.P.F.
FLEX PCB
VOLUME
A (RIGHT)
B (LEFT)
ADD OUT
DC-IN SOCKET
+
BATTERY
FUSE 630mA
+
SUPPLY CIRCUIT
LOBAT
(FROM SUPPLY)
BEEP
HP_ON
DOORSW.
PORES
(TO CD10)
DC/DC
UP/DOWN
CONVERTER
PORES
(FROM µP)
RESET
8.4MHz
DM
(TO SERVO DRIVER)
LOBAT
(TO µP)
+A
+3
MUTE
TO HEADPHONE AMP.
CL saw VG VLG VR
H-BRIDGE
MOTOR DRIVER 4
H-BRIDGE
MOTOR DRIVER 3
H-BRIDGE
MOTOR DRIVER 1
CL saw VG VLG VR
CL saw VG VLG VR
H-BRIDGE
MOTOR DRIVER 2
t
u
r
n
t
a
b
l
e
BEEP
BIAS
DBB
SW.
POW.
SW.
MUTE
SW.
L.P.F.
Vref
LOBAT
DETECT.
VDDL
VDD
+3
MOTO1
+3
+A +3
BEEP
(FROM µP)
DBB_LINE
(FROM CD10)
HP_ON
(FROM µP)
MUTE
(FROM µP)
HF-GAIN
INNERSWITCH
(FROM VAM2103/08)
HEADPHONE
SOCKET
IN A
IN B
DBB NF
DBB OUT
BIAS IN
BIAS
3V
0
-3V
2,5V
0
-2,5V
eye-pattern signal
> 800 mVpp
TB=0.5µs
1
during focus search
TB=0.1s
9
12
10
11
3V
0
servo in or disc motor cw
not moving
servo out or disc motor ccw
servo out or disc motor cw
not moving
servo in or disc motor ccw
16
14
13
15
1
14
16
15
13
9
11
1012
BLOCKDIAGRAM