Philips Mcm 9 Service Manual

Service hintsIn case of symptom „skipping tracks“ performf ollowing actions:
1. VERIFY THE  COMPLAINT
PLAYABILITY CHECKuse CD-RW Printed Audio Disk   . . . . . .7104 099 96611 TR 3  (Fingerprint)
TR 8 (600 µblack dot)  maximum at 01:00
• playback of these two tracks without audible disturbance playing time for: Fingerprint   ≥10seconds
Black dot  from 00:50 to 01:10
• jump forward/backward (search) within a reasonable time
2. CLEAN THE  LENS
CD DRIVE – LENS CLEANINGBecause the material of the lens is...

10-210-2Service hints
The following steps have to be done when replacing the CD mechanism:
1. Disconnect flexfoil cable from the old CD drive
2. Put a paperclip onto the flexfoil cable to short-circuit the contacts (fig.1)
3. Remove the old CD drive
4. Remove paperclip from the flexfoil cable and connect it to the new CD drive 
5. Position the new CD drive on its studs
6. Remove solder joint from the Laser unit (see below)
CHARGED CAPACITORS ON THE SERVO BOARD MAY DAMAGE THE CD DRIVE ELECTRONICS WHEN...

10-3
 
10-3
SYMBOL PIN DESCRIPTION
LPOWER 1 Laser power supply
EXTFILTER 2 10 nF capacitor for Laser start-up control
MONITOR 3 Laser monitor diode
SENSE 4 OPU ground reference point for MONITOR measurement
VSSA1
5Analogue ground 1
IREF 6 Reference current pin (24K
Ω resister to analogue ground)
V
DDA1
7Analogue supply voltage 1
VREF_OUT 8 Servo reference voltage
D1 9 Diode voltage/current input (central diode signal input)
D2 10 Diode voltage/current input (central diode signal input)
D3 11 Diode...

INTERNAL BLOCK DIAGRAMCD AUDIO DECODER 
- IC SAA7824
CD audio decoder, digital servo & filterless DAC
with integrated pre-amp  & laser controlSAA7824
EFM
DEMODULATOR
MICRO
INTERFACE
CONTROL
PART
BIAS
GENERATOR
VREF_OUT
CONTROL FUNCTION
OUTPUT
STAGES
D2
D4
R1
R2
SCL
SDA
CD-TEXT
INTERFACETEST
TEST1TEST2
TIMING
OSCINOSCOUTCLK16CLK4_12RA
SL
DIGITAL
PLLSRAMRAM
ADDRESSERSUBCODE
PROCESSOR
SBSYSFSY
SUB
RCKSTATUS
DECODER
MICRO-
CONTROLLER
INTERFACE
RESET
VERSATILE PINS
INTERFACE
KILL
DEM DAC
SDIWCLISCLI
SERIAL...

10-510-5
BLOCK DIAGRAM
Universal Loader 

10-610-6
1810 H2
1811 F3
2814 B2
2820 A2
2830 G1
3811 G1
3812 F2
3813 B2
3814 B2
3815 B2
3816 F2
3820 G3
3830 G1
3831 G1
3832 G1
6830 G1
7810 B2
9801 H1
TRAY MOTOR207
TRAY MOTOR BOARD /  copper side view
TRAY SWITCH
motor board ICD03 Phonic stage .1, 01032004
NC
TRAYTRAY SWITCH1811
MOVING
END POSITION  CLOSED
OPEN
TRAY-MOTOR BOARD  (UNIVERSAL LOADER)
TRAY_IN
F811 C2
F812 C2F816 C2
F820 B3 F830 A5
NC
1811 C22814 C3
2820 B32830 A4
3811 D2
Indication
Tray Position
MOTOR DRIVER
3820 B3 3830 A4
3831 A33832...

10-7
CIRCUIT DIAGRAM
CD SECTION
*
V1,V2 is input,v2,v3,v4 is output
Alternative
SONY-KSM213VCH
TEST POINTS:
NOTE:Tnn=TEST POINT (PAD 1.0mm)
F
X1 FOMOT-
E
RAD+ 1V7
VREF MOTOR2
RA
FOC+
FOC- D MOT+
A SLSLE+
B
C SLE-
LDOUT1+ OUT1+
RAD-VR
MDMOT+ MOT- SLE-
SLE+ HOME_SW
VCC
X1
E
D
A
B
C
F
LD
VR
MD
FOC+
RAD+
RAD-
FOC-
VREF
SE_CFLG
1V7
SE_REST
VCCHOME_SW
MOT+
MOT-
SLE+
SLE-
OUT1+
VREF
VREF
DAC_LRCK
SE_SCL
DAC_LN
V4
SE_LRCK
SE_CFLG
SE_CLK
V5
DAC_BLCK
SE_SDA
SE_BLCKSE_EF
V3
V5
DAC_LP
DAC_DATA
SE_RESET
DAC_RN
STAT...

10-8
CIRCUIT DIAGRAM
AUDIO SECTIONThe C79 ,C91 must be placed as near to the CD18 as
possible Notes:
Optional
CD_RCH CD_LCH
AMP_VCCAGND
DAC_LN
DAC_LP
DAC_RN
DAC_RP
CD_LCH
AGND
CD_RCH
CD_LCH
DAC_LP
CD_RCH
DAC_RPDAC_LNDAC_RN
CD_LCHCD_RCH
AMP_VCC
5V
C75 220pF
C84
1.5nF
C83 100uF/6.3V
T56
C77 100uF/6.3V
R86 47R
C95 220pF
C78
1.5nF
T50
R93
18K
-
+
IC11B MJN4558
56
7
84
R92
1K
T51
R82 18K
R84 22K
C93
100pF
T52
R88 22K
C91
1.5nF
T53
C80
100pFC41 0.1uF
C87 0.1uF
C92
1.5nF
R95 22K
R110 100R
R87 4K7
C86...

NOTE:Tnn=TEST POINT (PAD 1.0mm)
D18
D21 A6
A8 A7D20
A17D17
D30 A2
D26
A12 A1
D22
D29
D31 A10
A16D16
D23 A4
A5
A15D25
A11
R/W A3
A18D19
D28 D27
OEBD24
A13 A9
A14
VDD_FLASH
VDD_FLASH A19
A[1:20]
R/W
CS0
OEB
D[16:31]
MAIN_VCC
T20
R31 100R
IC2
OPT36(8M Mask ROM)
252423222120191887654321481716
293133353840424430323436394143451247
262811
1513372746
91014A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18IO0
IO1
IO2
IO3
IO4
IO5
IO6
IO7
IO8
IO9
IO10
IO11
IO12
IO13
IO14
IO15/A1
RESET
BYTE
CEOEWE...

10-10
For 1 DISC Only
FOR 1CD DISC ONLY
1 DISC INTERFACE
For 5 DISC Only
Alternative Alternative Section
Section
/1823FOR 5CD DISC ONLY
5 DISC INTERFACE If 1CD pick up has a 1ch moto drive self ,pls only populate j5.
door_open
door_state door_close
Tray_out
Tray_in
Tray_sw door_open
door_close
door_state
Tray_SDA+12V
Tray_SCL Tray_IRQ
uC_RESET
+12V
Tary_inTary_out
door_statedoor_state
Tray_sw
Tray_in
CD_LCHCD_RCH
SL_SDA
+12V
SL_SCL
5V
Tary_out
A_GND
Tray_swBUSY
uC_RESET
SL_SDA
CD_RCH
BUSY
5V
CD_LCH...