Refer to the service manual for Model No. SA-EH560 (OREDER No. AD0002043C2) for
information on Packaging.
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Page 8
2 Handling Precautions for Traverse Deck
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The laser diode in the traverse deck (optical pickup) may break down due to potential difference
caused by static electricity of clothes or human body.
So be careful of electrostatic breakdown during repair of the traverse deck (optical pickup).
2.1 Handling of traverse deck (optical pickup)
2.2 Grounding for electrostatic breakdown prevention
2.2.1 Human body grounding
2.2.2 Work table grounding
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Page 9
2.1 Handling of traverse deck (optical pickup)
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1. Do not subject the traverse deck (optical pickup) to static electricity as it is extremely sensitive
to electrical shock.
2. To protect the laser diode against electrostatic breakdown, short the flexible board (FFC
board) with a clip or similar object. Refer to
3. Take care not to apply excessive stress to the flexible board (FFC board).
4. Do not turn the variable resistor (laser power adjustment). It has already been adjusted. Refer
to
Fig. 2-1.
Fig. 2-1.
Fig. 2-1.
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Page 10
2.2 Grounding for electrostatic breakdown
prevention
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2.2.1 Human body grounding
2.2.2 Work table grounding
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Page 11
2.2.1 Human body grounding
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Use the anti-static wrist strap to discharge the static electricity from your body. Refer to Fig. 2-2.
Fig. 2-2.
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Page 12
2.2.2 Work table grounding
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Put a conductive material (sheet) or steel sheet on the area where the traverse deck (optical pickup) is
placed, and ground the sheet. Refer to Fig. 2-3.
Fig. 2-3.
Caution:
The static electricity of your clothes will not be grounded through the wrist strap.
So take care not to let your clothes tough the traverse deck (optical pickup).
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Page 13
3 Precaution of Laser Diode
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CAUTION:
This product utilizes a laser diode with the unit turned on, invisible laser radiation is emitted from the pickup lens.
Wave length: 780 nm
Maximum output radiation power from pickup: 100μW/VDE
Laser radiation from pickup unit is safety level, but be sure the followings:
1. Do not disassemble the pickup unit, since radiation from exposed laser diode is dangerous.
2. Do not adjust the variable resistor on the pickup unit. It was already adjusted.
3. Do not look at the focus lens using optical instruments.
4. Recommend not to look at the pickup lens for a long time.
Page 14
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Page 15
4 Location of Controls
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5 Operation Checks and Component
Replacement/Procedures
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This section describes procedures for checking the operation of the major printed circuit boards and
replacing the main components.
For reassembly after operation checks or replacement, reverse the respective procedures. Special
reassembly procedures are described only when required.
/
5.1 Checking for the main P.C.B.
5.2 Checking for the CD servo P.C.B.
5.3 Replacement for the traverse deck ass’y
5.4 Replacement for the belt, loading motor ass’y and loading switch
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Page 17
5.1 Checking for the main P.C.B.
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Check the main P.C.B. as shown above.
/
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Page 18
5.2 Checking for the CD servo P.C.B.
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Follow the (Step 1) - (Step 3) of item 5.1.
Page 19
Check the CD servo P.C.B. as shown below.
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Page 20
5.3 Replacement for the traverse deck ass’y
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Follow the (Step 1) - (Step 3) of item 5.1.
Follow the (Step 1) - (Step 5) of item 5.2.
Page 21
Page 22
Page 23
Page 24
Page 25
5.4 Replacement for the belt, loading motor
ass’y and loading switch
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Follow the (Step 1) - (Step 3) of item 5.1.
Follow the (Step 1) - (Step 5) of item 5.2.
Follow the (Step 1) - (Step 9) of item 5.3.
Page 26
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Page 27
6 Error Code Display and Servo Adjustment
Function
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This unit has an error code display function, so that if the unit operates incorrectly, the fault is
displayed using an error code on the FL display of the Tuner/Amplifier (SA-EH560). It also has a
servo adjustment function for displayingthe status of servo system functions (Focus, Tracking, CLV
servo) on the FL display of the Tuner/Amplifier. The system control IC and FL display are part of the
Tuner/Amplifier so make sure the system has been connected properly beforeusing these functions.
Use these two functions for guidance during fault diagnosis and repair.
Note:
Check beforehand for scratching or soiling of the test disc (SZZP1054C), and soiling or other
problems with the pickup lens.
6.1 Error Code Display Procedure
6.1.1 Automatic Adjustment Results
6.1.2 Checking the mechanism switches
6.2 Servo Adjustment Procedure
6.3 Error code based on troubleshooting
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Page 28
6.1 Error Code Display Procedure
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6.1.1 Automatic Adjustment Results
6.1.2 Checking the mechanism switches
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Page 29
6.1.1 Automatic Adjustment Results
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1. Turn on the power.
2. Load the test disc (SZZP1054C).
3. Hold down the REPEAT button for at least 2 seconds, and then press the STOP button for at
least 2 seconds while continuing to hold down the REPEAT button.
4. A servo section error code is displayed. Refer to
this error code display as a guideline for finding the malfunction point in the servo circuitry. If
the errorcode E00 is displayed, the unit is OK.
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Error code based on troubleshooting . Use
Page 30
6.1.2 Checking the mechanism switches
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1. Press the F.SKIP button.
2. A mechanism OK/NG error code is displayed. Refer to Table 6-1. This error code can be used diagnose whether the mechanism is OK or not. If there are multiple errors, these can be
displayedsuccessively by pressing the F.SKIP button.
3. Remove the disc and turn off the power. (The error code display mode is canceled.)
Table 6-1.
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Page 31
6.2 Servo Adjustment Procedure
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1. Turn on the power.
2. Load the test disc (SZZP1054C).
3. Hold down the REPEAT button for at least 2 seconds, and then press the PAUSE button for at least
2 seconds while continuing to hold down the REPEAT button.
4. Press the PLAY button, and play for 10 seconds.
5. Servo adjustment results are displayed. Refer to
adjustment results, refer to
Fig. 6-2.
Fig. 6-1.
Fig. 6-2.
Fig. 6-1. For further information about servo
Page 32
6. Remove the disc and turn off the power.
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Page 33
6.3 Error code based on troubleshooting
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This unit is satisfactory if the error code is E00 and E02 .
Before testing, check that the test disc is free of scratches and optical pickup is clean.
SymptomProbable
FL
error
code/
display
E01Focus and
tracking
offset
adjustments
not
completed
in the
specified
time period.
cause
Clocks X1
IN and X2
OUT, power
supply VDD
and reset/
RST, all on
IC702.
MDATA,
MCLK,
MLD and
SENSE
signals to/
from
mechanism
controller.
Signal to checkNormal voltage and waveform values
Signal
name
MDATA IC702-8
MCLKIC702-7
MLDIC702-9
SENSEIC702-
/RSTIC702-
X1 INIC702-
LocationPLAYSTOP
pin
pin
pin
--
10 pin
3.4 V3.4 V
18 pin
58 pin
0 V
3.4 V
3.4 V
E03,
E05,
E07,
E09,
E0B,
E0D,
E0F
Disc play
unstable.
Scratches or
contaminants
on disc
surface.
Focus and
Tracking
servo circuit
(check
waveforms,
voltages and
part values.)
Spindle
driver circuit.
Optical
pickup.
X2 OUTIC702-
59 pin
FEIC702-
32 pin
1.7 V
Page 34
TEIC702-
33 pin
1.7 V
E04,
E06,
E0C,
E0E,
Best Eye
(PD
balance)
adjustment
not
completed
in the
specified
time period.
Scratches or
contaminants
on disc
surface.
Focus and
Tracking
servo circuit
(check
waveforms,
voltages and
part values.)
Optical
pickup.
FODIC702-
28 pin
TRDIC702-
27 pin
KICKIC702-
26 pin
/FLOCKIC702-
11 pin
/RFDETIC702-
38 pin
RFTJ701
STATIC702-
17 pin
FBALIC702-
30 pin
RFIC701-8
pin
1.7 V1.7 V
1.7 V1.7 V
--
--
0 V3.3 V
1.0 V
3.3 V0 V
1.7 V1.7 V
1.0 V
FEIC702-
32 pin
/TLOCKIC702-
12 pin
OFTIC702-
36 pin
1.7 V
--
0 V0 V
Page 35
E08,
E0A
Focus and
Tracking
gain
adjustment
not
completed
in specified
time period.
Scratches or
contaminants
on disc
surface.
Focus and
Tracking
servo circuit
(check
waveforms,
voltages and
part values.)
Optical
pickup.
FEIC702-
32 pin
TEIC702-
33 pin
1.7 V
1.7 V
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/TLOCKIC702-
12 pin
OFTIC702-
36 pin
--
0 V0 V
Page 36
7 To Supply Power Source
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This unit is designed to operate on power supplied from system connected./When a component requires
service, use the system connections to supply power source./For system connections, refer to Fig.7-1.
Fig. 7-1.
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Page 37
8 Schematic Diagram Notes
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This schematic diagram may be modified at any time with the development of new technology.
Notes:
S601:
CD edit switch (EDIT)
S602:
Repeat switch (REPEAT)
S603:
Random play switch (RANDOM)
S611:
Disc tray open/close switch/(
OPEN/CLOSE)
S612:
Pause switch (
)
S613:
F.Skip/search switch (
)
S614:
Page 38
Play switch (
)
S615:
Stop switch (
)
S616:
R.Skip/search switch (
)
S701:
Rest detect switch in OFF position
S790:
Disc tray close detect switch in OFF position
S791:
Disc tray open detect switch in OFF position
Indicated voltage values are the standard values for the unit measured by the DC electronic circuit
tester (high-impedance) with the chassis taken as standard. Therefore, there may exist some errors in
the voltage values, depending on theinternal impedance of the DC circuit tester.
No mark
: CD Stop
( )
: CD Play [1 kHz, L+R, 0 dB]
Important safety notice:
Page 39
Components identified by mark have special characteristics important for safety.
Furthermore, special parts which have purposes of fire-retardant (resistors), high-quality sound
(capacitors), low-noise (resistors), etc. are used.
When replacing any of components, be sure to use only manufacturer’s specified parts shown in the
parts list.
Caution!
IC and LSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during repair.
Cover the parts boxes made of plastics with aluminum foil.
Ground the soldering iron.
Put a conductive mat on the work table.
Do not touch the legs of IC or LSI with the fingers directly.
Voltage and signal line
: Positive voltage line
: CD signal line
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Page 40
9 Schematic Diagram
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Page 41
10 Printed Circuit Board Diagram
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Page 42
11 Type Illustration of ICs, Transistors and
Diodes
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12 Wiring Connection Diagram
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13 Block Diagram
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14 Troubleshooting Guide
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Page 46
15 Terminal Function of ICs
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15.1 IC451 (M38504M6200F):System Control
15.2 IC701 (AN8839NSBE2):Servo Amp
15.3 IC702 (MN662790RSA1):Servo Processor/Digital Signal Processor/Digital Filter/D/A converter
1VccIPower supply terminal
2VREFIReference voltage input
3AVSS-GND terminal
4SYNCIPower failure detect signal input
5SUBQISub-code Q data signal input
6SQCKOSub code Q resistor clock signal output
7BLKCKIBlock clock signal input
8CD REQISerial communication signal to Sound Processor (Request signal input)
9B CSOSerial communication signal to Sound Processor (Chip select signal output)
10B CLKOSerial communication signal to Sound Processor (Clock signal output)
11DATA OOSerial communication signal to Sound Processor (Data signal output)
12DATA IISerial communication signal to Sound Processor (Data signal input)
13TESTITest mode select signal input/(Connected to VCC via resistor)
14RESTSWIRest switch signal input
15CNVSS-Connected to VSS
16SERVO RSTOReset signal output for CD servo IC
17E-CS-EEPROM serial communication signal
(Not used, open)
18RESETIReset signal input
19X INIOscillator connected terminal (8 MHz)
20X OUTO
21VSS-GND terminal
22LED ORGOORANGE LED signal output
23E-CLK-Serial communication signal to EEPROM
(Clock signal output) (Not used, open)
24E-DATAOSerial communication signal to EEPROM
(Data signal output)
25LED GRNOGREEN LED signal output
26MSELIFunction select signal input/(Connected to VCC via resistor)
27MDATAOCommand data output
28MCLKOCommand clock output
29MLDOCommand load output
Page 48
30STATIStatus signal input
31HALH-CD mechanism motor speed control signal output (Not used, open)
32PLG-CD mechanism solenoid control signal output (Not used, open)
33CWOCD mechanism motor control signal output (forward direction)
34CCWOCD mechanism motor control signal output (reverse direction)
35PSTN-Position sensor detect signal input
(Not used, open)
36SW1-Disc tray position 1 detect signal input
(Not used, open)
37SW2-Disc tray position 2 detect signal input
(Not used, open)
38SW3IDisc tray open detect signal input
39SW5-Bottom switch detect signal input
(Not used, open)
40KEY2IOperation key signal input
41KEY1IOperation key signal input
42SW4IDisc tray close detect signal input
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Page 49
15.2 IC701 (AN8839NSBE2):/Servo Amp
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Pin No. Terminal Name I/OFunction
1PDEITracking signal input terminal 1 (E ch)
2PDFITracking signal input terminal 2 (F ch)
3VccIPower supply terminal
4PDAIFocus signal input terminal 1 (A ch)
5PDBIFocus signal input terminal 2 (B ch)
6LPDILaser PD signal
7LDOLaser power auto control output
8RFORF amp terminal
9RFINIAGC input terminal
10CSBRTIOFTR capacitor connection terminal
11CEAIHPF-AMP capacitor connection terminal
12BDOODropout detection control
13LDONILD APC ON/OFF (H: ON)
14GND-GND terminal
15/RFDETORF detect signal output (L: detect)
16PDOWN-Power down terminal
17OFTROOff track detection (H: detect)
18NC-Not used, open
19ENVOEnvelope signal output
20NC-Not used, open
21
22TENITracking error signal input
23TEOUTOTracking error signal output
24FEOUTOFocus error signal output
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25FENIFocus error signal input
26VREFOReference voltage output
27TBALITracking balance adj. input
28FBALIFocus balance adj. input
Page 50
15.3 IC702 (MN662790RSA1):/Servo Processor/
Digital Signal Processor/Digital Filter//D/A
converter
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Pin No. Terminal Name I/OFunction
1BCLK-Serial bit clock output (Not used, open)
2LRCK-L/R discriminating signal output
(Not used, open)
3SRDATA-Serial data signal output (Not used, open)
4DVDD1IPower supply terminal
5DVSS1-GND terminal
6TXODigital audio interface signal output
7MCLKICommand clock signal input
8MDATAICommand data signal input
9MLDICommand load signal input
10SENSE-Sense signal (Not used, open)
11/FLOCK-Optical servo condition (focus)
(Not used, open)
12/TLOCK-Optical servo condition (tracking)
(Not used, open)
13BLKCKOSub-code block clock signal output
(f=75 Hz)
14SQCKISub-code Q resistor clock signal input
15SUBQOSub-code Q data signal output
16DMUTE-Muting input (Not used, connected to GND)
17STATOStatus signal output
18/RSTIReset signal input (L: reset)
19SMCK-System clock (Not used, open)
20CSELIFrequency control terminal of crystal oscillator (Connected to VDD)
21TRV-Traverse servo control signal output
(Not used, open)
22TVDOTraverse drive signal output
23PCOTurntable motor drive signal output (L: ON)
24ECMOTurntable motor drive signal output
(Forced mode)
Page 51
25ECSOTurntable motor drive signal output
(Servo error signal)
26KICK-Kick pulse output (Not used, open)
27TRDOTracking drive signal output
28FODOFocus drive signal output
29VREFID/A drive output normal voltage input
30FBALOFocus balance adj. output
31TBALOTracking balance adj. output
32FEIFocus error signal input
33TEITracking error signal input
34RFENVIRF envelope signal input
35VDETIOscillator detect signal input (H: detect)
36OFTIOff track signal input (H: Off track)
37TRCRSITrack cross signal input
38/RFDETIRF detect signal input (L: detect)
39BDOIDropout detection signal input (H: dropout)
40LDONOLaser power control signal output (H: ON)
41PLLF2-PLL loop filter terminal (Not used, open)
42DSLF2I/O DSL loop filter terminal
43WVEL-Double velocity status signal output
68DEMPH-De-emphasis ON signal (Not used, open)
69RESY-Re-synchronizing signal of frame sync.
(Not used, open)
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70IOSELII/O select signal input (Connected to VDD)
71/TESTITest terminal
(Not used, connected to power supply)
72AVDD1IPower supply terminal
73OUTLOL ch audio signal output
74AVSS1-GND terminal
75OUTROR ch audio signal output
76RSELIPolarity direction control terminal of RF signal (Not used, connected to power supply)
77IOVDDIPower supply terminal
78PSEL-Test terminal (Connected to GND)
79MSEL-Output frequency select signal input
mark have special characteristics important for safety.
Furthermore, special parts which have purposes of fire-retardant (resistors), high-quality sound
(capacitors), low-noise (resistors), etc. are used.
When replacing any of components, be sure to use only manufacture’s specified parts shown in the
parts list.
The marking [RTL] indicates that Retention Time is Limited for this item. After the discontinuation
of this assembly in production, the item will continue to be available for a specific period of time.
The retention period of availabilityis dependent on the type of assembly, and in accordance with the
laws governing part and product retention. After the end of this period, the assembly will no longer
be available.
NOTE:
The number which noted at the connectors
on the schematic diagram as
"SCHEMATICDIAGRAM-1" or
"SCHEMATICDIAGRAM-2"
indicates the schematic diagram
serial number located on the left corner
in the schematic diagram.
OPTICAL PICKUP
0.1
8
3
LD
11
12
2
10
5
4
9
6
1234
Vcc
BIN
GND
NBOUT
GND
NAOUT
8765
TRACKING
COIL
FOCUS
COIL
AIN
VREF
1K
680P
680P
0.1
0.047
1
2
3
4
5
6
7
8
9
VREF
10
11
13
14
15
Vcc
PDF
PDE
LD
GND
GND
NB
GND
NA
LPD
GND
T+
T
F+
F
CD SERVO CIRCUIT
A
CN701
1
C751
D
0.1
CB A
A
B
C
D
E
C750
0.1
2
3
4
5
6
7
8
9
10
11
1212
13
14
15
1616
Q701
2SB709STX
LASER POWER
DRIVE
4.7
R701
(2.5V)
3.4V
3V
0.3V
(1.8V)
D
E
C
A
B
1.7V3.4V1.7V1.7V 1.7V
PDE
FBAL
1.7V 1.7V 1.7V 1.7V 1.7V 1.7V 1.7V1.7V0V3.3V
C712
0.1
C711
0.1
22K
R708
TP42TP40
I
VREF
:POSITIVE VOLTAGELINE:CD SIGNAL LINE
5V
3.4V
C707
(2.3V)
CSBRT
ENV
TP30
0.027
0.1
C704
1.8V 0V
CEA
NC
BDO
OFTR
C703
6.3V100
C716
820P
(3.3V)
0V
LDON
PDOWN
1413121110987654321
GND
/RFDET
1516171819202122232425262728
(0V)
B
A
PDA
FEN
C747
180P
R744
120K
R706
PLAY
0.5 s. 0.2V/DIV.
(0.2V)0V(2.5V)3V(1.5V)
LPD
PDB
FEOUT
TEOUT
10K
R702
1K
TP33TP32
C710
120P
R705
R704
150K
1K
C701
6.3V33
IC701
AN8839NSBE2
SERVOAMP
Vcc
PDF
TBAL
VREF
C749
2200P
C742
0.027
39K
R707
HGFEDC
0.8V
P-P
1V 0.7V 2.1V
LD
RF
TEN
NC
PLAY
2ms. 0.1V/DIV.
PLAY
2ms. 0.1V/DIV.
(RF)
TJ701
0.1
C702
RFIN
NC
0.6V
P
-
0.2V
P
TP29
C706
P
-
P
2700P
M702
SPINDLE
MOTOR
M701
TRAVERSE
MOTOR
M
M
TP36
C737
TP35
TP38
C736
TP37
0.1
C713
C714
BADC
(0.4V) (0.2V) (0.1V) (0.4V)0V(0.2V)
0V0V0V0V7.8V7.8V 1.7V 1.7V 1.7V
14151617181920
D3
D2+
13121110987
A
0.1
B
C
0.1
D
0V0V0V0V
(0.1V) (0.7V)(0.6V)
ABCD
D3+
D2
D4
D1+
D4+
D1
NC
NC
6.3V100
0.1
C735
PGND2
PGND1
C734
IC703
AN8739SBE2
FOCUS COIL/
TRACKING COIL/
TRAVERSEMOTOR/
SPINDLE MOTOR DRIVE