Blockdiagram - Philips AZ7381 Service Manual

BLOCKDIAGRAM MABEL PBAS2
DISC
TURNTABLE
MOTOR
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
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 46 519
3-3
P TMP87CK20F
RAM
+µP
RESET
CLOCK GEN.
& TIMING
RESET 4.2MHz
(FROM DC/DC CONV.)
KIN1..3, KO1..3
KEYBOARD
+3
LO
FROM/TO DC/DC CONV.
H=Laser on
Lo Vddl LDon LDON
LASER
1
SUPPLY &
L.P.F. Hf HFIN
+
PROTECT. FRONT END
H.P.F.
DIGITAL PLL
O6 R1
L.P.F. L.P.F.
O5 R2
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
PORES
(FROM µP)
+3 VG VR
VLG VG VR
CLsaw
LOW VOLTAGE 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
MUTE_S
(FROM µP)
servo in or disc motor cw 13
10
3V 3V
not moving 14
11
0
servo out or disc motor ccw 15
12
-3V 0
16
LCD
LCD DRIVER ROM
16bit TIMER
ALU
COUNTER
SILD, RAB, SCL, SDA
YMLD, YMCLK, YMDATA
ZSENSE, SFSY (PWM_IN)
I/O PORTS
DRAM
TO SOUND CONT.
16.9MHz 4.2MHz
TO SERVO DRIVER
EBU
TIMING
INTERFACE
SBSY
SBSY ENCODER
YMLD
SFSY
YMCLK
ERROR MOTOR SUBCODE
YMDATA
CORRECT. CONTROL PROCESS.
ZSENSE
EFM RAM PEAK
SRAM
ADDRESS. DET.
YFLAG
SILD
RAB
SCL
SDA
µP
CONTROL PART
INPUT BUFFER
INTERFACE
MISC
SCLK YSCK
FUNCTION AUDIO SERIAL INPUT
WCLK YLRCK
CONTROL PROCESS. INTERFACE DATA YSRDATA INTERFACE
SM5902AF
OUTPUT VERSATILE
KILL
NPC
RESET 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
DRAM INTERFACE
DECODER 16.9MHz
OUTPUT ANAL. LO
CONTROLLER
CIRCUIT FILTER
INTERFACE
VR
SHOCK
CONTROL
OUTPUT ANAL.
RO
CIRCUIT FILTER
ATTENUATOR
ZSCK BCK BS
µCON
I/O OUTPUT SERIAL
ZLRCK LRCK EMP
EXTENSION INTERFACE ZSRDATA DATA INTERFACE INTERFACE SM
TC9404FN
DIG. FILTER & DAC
RESET
NPC_RES
(FROM µP)
+A
EXT. DC
DOWN-
CONV.
+
ACCU or ACCU DET.
BATTERY
BATM
DCIN VOUT2 BATM
CHGSW CHARGE
CHARGE
AMPLIFIER
RS
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)
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
+A
VCC
RIPPLE
MUTE
FILTER
SOUND/VOLUME
CONTROL
TREB
HEADPHONE
SOCKET
LEFT
Vref
RIGHT
TREB
DBB
CONT.
BEEP
BA3574BFS
HEADPHONE AMP.
+3 +µP
3.2V
DC/DC
UP-CONV. ACCU_IN
(TO µP)
VG
+A
+µP
1)
not on all versions