Panasonic SL-DZ1200PP / SL-DZ1200EB / SL-DZ1200EG / SL-DZ1200EP / SL-DZ1200GN Service Manual ▷ View online
DZ1200 audio output circuit block diagram
Fig 5
MAIN
JACK
IC18
+7 V power supply
Three-terminal
+5 V for audio
regulator
IC14
IC33
Scratch microcomputer
DAC
IC35
IC2004
DSC25
PCM1734
Operation
Operation
LRCK
Analog
amplifier
Analog
amplifier
Analog
DATA
audio
M5218A
audio
M5218A
audio
LINE
BCK
OUT
SCK
IC2002
Q2004
Serial communication
VR2002
Operation
Q2005
H.PHONE
Digital output enable signal
H.PHONE
amplifier
Q2006
audio
H.PHONE
VR
M5218A
Q2007
OUT
IC2
UI microcomputer
M30622
MUTE signal
MUTE
X6
IC4
circuit
11.2896MHz
DIGITAL
AUDIO
TC9271
IC15
Digital
IC2006
T2001
Digital
Gate
audio
7WU04F
Isolation
audio
DIGITAL
7W08F
Buffer
transformer
OUT
DZ1200 turntable control circuit block diagram
Fig 6
JACK
+20V
+10V
Q2008
Transistor
Clock
TT.PWM
IC2
UI microcomputer
Three-phase signal
Serial
M30622
X2001
communication
4.193MHz
Brake
ECR
adjustment
VR2001
EC
Torque switching
IC2007
Q2009
IC2008
FG
FG signal
FD coil
Analog SW
AMP
IC14
Scratch microcomputer
Motor ON/OFF
DSC25
Turntable FREE
+20 V power supply
MAIN
Turntable
Refer to the item "Signal flow", turntable.
Refer to the item "Signal flow", CD, SD audio flow.
Motor
IC2003
IC2005
Motor controller
Motor driver
AN6680
AN6675
Forward/reverse switching signal
25
SL-DZ1200PP / SL-DZ1200EB / SL-DZ1200EG / SL-DZ1200EP / SL-DZ1200GN
DZ1200 LCD access circuit block diagram
Refer to the item "Signal flow", LCD.
Fig 7
MAIN
IC9
Voltage conversion
Data bus
LVX4245 Data bus
Controller
IC1, 19
Control bus
Control bus
Voltage conversion
+5V
+5 V power supply
Contrast
PWM
voltage control
-10~ -13V
IC23
FLASH
ROM
Image data
IC8
+5V
Three terminal
+7V
regulator
DZ1200 reset circuit block diagram
Refer to the item "Signal flow", reset circuit.
Fig 8
+1.8V
+3.3V
+1.8V
+3.3V
RESET
GIO
RESET
IC11
+3.3 V power supply
+2.9V
monitoring IC
IC20
+1.8 V power supply
IC10
General purpose output
Three-terminal
+1.6V
regulator
monitoring IC
DE
Q5
IC6
+5 V power supply
+4.5V
monitoring IC
+5V
Operation power supply
Contrast power supply
Backlight power supply
LCD unit
IC14
Scratch microcomputer
DSC25
IC14
IC34
-15 V power supply
Scratch microcomputer
Media microcomputer
DSC25
DSC25
RESET
IC2
UI microcomputer
M30622
26
SL-DZ1200PP / SL-DZ1200EB / SL-DZ1200EG / SL-DZ1200EP / SL-DZ1200GN
DZ1200 POWER circuit board power supply circuit block diagram
Fig 9
POWER
AC input
100~240V
S1101
F1101
L1120
D1140
T1150
D1403
Power supply switch
FUSE
L1121
Rectifier
Switching
Diode
-15V
Line filter
diode
transformer
1.6A
IC1150
Switching IC
MR1722
D1271
D1261
Diode
Diode
Q1200
IC1200
+20V
Photocoupler
Voltage detection
+7V
IC1302
Three-terminal
+5V
regulator
IC1410
Switching
+3.3V
regulator
IC1201
Three-terminal
+15V
regulator
Refer to the item "Outline of the parts", POWER (power supply).
27
SL-DZ1200PP / SL-DZ1200EB / SL-DZ1200EG / SL-DZ1200EP / SL-DZ1200GN
Fault mode analysis: (Refer to the table of fault symptoms and countermeasures.)
1. The power cannot be switched on.
2. The power can be switched on, but there is no operation.
When there is absolutely no operation, doubting the SC/MD microcomputer is fastest.
** Observe the waveforms of microcomputer CS, address, and data, and determine the fault location.
Does the fuse
blow when the
power is
switched on?
blow when the
power is
switched on?
The power cannot be
switched on.
Replace the fuse.
No
Blown fuse
Defective parts around IC1150, D1140
Yes
The power can be switched on, but there is
no operation.
Switch on the power.
Does the LED
of the CD
mouse light?
of the CD
mouse light?
No
Defective power supply
circuit of the +5 V system
Yes
The LCD backlight
lights, but the LED
does not light.
lights, but the LED
does not light.
No
Defect related to the
SC/MD microcomputer
Yes
Do some of the panel
switches/LEDs
operate?
switches/LEDs
operate?
No
Defect related to the
SC/MD microcomputer
Yes
Defect related to the UI
microcomputer
Defect related to the UI
microcomputer
28
SL-DZ1200PP / SL-DZ1200EB / SL-DZ1200EG / SL-DZ1200EP / SL-DZ1200GN
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