Blockdiagram - Philips AZ7381 Service Manual

BLOCKDIAGRAM

DISC
TURNTABLE LASER
POWER DOWN
MOTOR
CONVERTER
12 10
LD
TRACK
SERVO
9
FOCUS
SERVO
11
SLIDE
SERVO
Laser
diode MI
Monitor
diode
R1
R2
D1
D2
PHOTO DIODE
ARRAY D3
D1 D2
R1 R2
TDA1300T
D3
VAM2103
HF-PREAMPLIFIER
CD-DRIVE
LOW VOLTAGE
FLEX PCB
DM±
Sldm±
Focus±
Track±
MPC17A50VM
SERVO DRIVER
eye-pattern signal
during focus search
> 800 mVpp
2,5V
1 9
0
TB=0.1s
-2,5V
TB=0.5µs
CS 46 464
3-3
P TMP87CK20F
RAM
+µP
RESET
CLOCK GEN.
& TIMING
4MHz
RESET
(FROM DC/DC CONV.)
KEYBOARD
+3
RCI, RCO, RCD
1)
RC RC-CIRCUIT
(FROM/TO RC-SOCKET)
1)
LO
FROM/TO SUPPLY/CHARGE CIRCUIT
+C
H=Laser on
Lo Vddl LDon LDON
LASER
SUPPLY & 1
L.P.F. Hf HFIN
PROTECT. +
FRONT END
H.P.F.
DIGITAL PLL
O6 R1
L.P.F. L.P.F.
O5 R2 EFM
DEMOD.
L.P.F. L.P.F.
O1 D1
L.P.F. L.P.F.
O3 D2
L.P.F. L.P.F.
O4 D3
L.P.F. L.P.F.
PRE-PROC.
D4
L.P.F. L.P.F.
SAA7374GP
CD7
RESET
PORES
(FROM µP)
+3 VG VR
VLG VG VR
CLsaw
SAWTOOTH
SAW_CLOCK
DETECTOR OSCILLATOR (FROM DC/DC CONV.)
16
H-BRIDGE
DM_IN PWM_DM
(FROM µP)
MOTOR DRIVER 4
L.P.F.
VG VLG VR CLsaw
15
H-BRIDGE
SLIDE_IN SL (PWM signal)
MOTOR DRIVER 2
L.P.F.
VG VLG VR CLsaw
13
H-BRIDGE
FOCUS_IN FO (PWM signal)
MOTOR DRIVER 1
L.P.F.
VG VLG VR CLsaw
14
H-BRIDGE
TRACK_IN RA (PWM signal)
MOTOR DRIVER 3
L.P.F.
VG VLG VR CLsaw
servo in or disc motor cw 13
10
3V 3V
not moving 14
11
0
15
servo out or disc motor ccw
12
-3V 0
16
1)
DISPLAY ILLUMINATION
LCD
LCD DRIVER ROM
16bit TIMER
ALU
COUNTER
I/O PORTS
DRAM
DOBM (TO DIGITAL OUT) MOTO1 16.9MHz 4MHz
DRAM INTERFACE
EBU
TIMING
INTERFACE
ENCODER
YMLD
ERROR MOTOR SUBCODE
YMCLK
CORRECT. CONTROL PROCESS.
YMDATA
CONTROLLER
RAM PEAK
SRAM
ADDRESS. DET.
YFLAG
SILD
RAB
SCL
SDA
µP
CONTROL PART
INPUT BUFFER
INTERFACE
MISC
SCLK YSCK
FUNCTION AUDIO SERIAL WCLK YLRCK INPUT
CONTROL PROCESS. INTERFACE DATA YSRDATA INTERFACE EXTENSION
SM5902AF
OUTPUT VERSATILE
KILL
NPC
STAGES INTERFACE
SL FO RA
SUPPLY/CHARGE CIRCUIT
DC-in socket
CD7 → NPC
TRANSFER OF AUDIO SAMPLES VIA SERIAL INTERFACE OF CD7 AND NPC
NPC → DAC
2 5
SCLK
servo out or disc motor cw
not moving 3 6
WCLK left channel
servo in or disc motor ccw
4 7
DATA
3-3
1)
DRAM
+3
16.9MHz
A0...A9, D0...D3
CAS, RAS, WE, OE MCK VDD
DECODER SOUND/VOLUME
16.9MHz
OUTPUT ANAL.
LO
TREB
CIRCUIT FILTER
INTERFACE
VR
SHOCK
CONTROL
OUTPUT ANAL.
RO
TREB
CIRCUIT FILTER
ATTENUATOR
ZSCK BCK BS
µCON
I/O OUTPUT ZLRCK LRCK SERIAL EMP
INTERFACE ZSRDATA DATA INTERFACE INTERFACE SM
TC9404FN
DIG. FILTER & DAC
RESET
NPC_RES
(FROM µP)
+A
EXT. DC 3.2V
DOWN- DC/DC
CONV. UP-CONV.
ACCU or
BATTERY
+DC
VOUT2 BATM
+ DCIN
CHARGE
CHARGE
AMPLIFIER
PWM2
BANDGAP REF.
ERROR AMP
SUB REF.
VOUT1
PWM1
SAW_CLOCK
SAWTOOTH
CHARGE
(TO SERVO DRIVER)
PUMP
ERROR AMP OSC2
CHG_ON
STEP-UP
(from µP)
+A
DCDTB
DC/DC CONV.
DC-IN DETECT
BATIN
LOBAT LOW BATT DET. OSC1
RESET
LOW VCPU DET. REGULATOR
POWER
(from µP)
MPC1825AVM
DC/DC CONVERTER
BATTERY CHARGER
right channel
1)
DIGITAL OUT
DOBM
(FROM CD7)
DCTBD
+A
VCC
RIPPLE
MUTE
FILTER
CONTROL
+3
HEADPHONE&
RC-SOCKET
Vref RIGHT
LEFT
RC
(FROM/TO
DBB
RC-CIRCUIT)
CONT.
BEEP
BA3574BFS
HEADPHONE AMP.
+3 +DC
FROM µP
PWM_OUT REF_ON
U_CHG
ACCU DET.
ACCU
BATM
PWM_IN
MEASURING
TO µP
ACCU_IN
TEMP.
T_ACCU
CONT.
VG
+µP
1)
not on all versions