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
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-EH570). 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.
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 Error code based on troubleshooting. Use this
error code display as a guideline for finding the malfunction point in the servo circuitry. If the
error code E00 is displayed, the unit isOK.
1. After a servo section error code is displayed, 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 displayed
successively by pressing the F.SKIP button.
3. Press the STOP button, then remove the disc and turn off the power. (The error code display mode
is canceled.)
Table 6-1.
FL displaySymptomCause
H15When CD tray opens, it closes by itself.Tray open detect switch (S790) fault.
H16When CD tray closes, it opens by itself.Tray close detect switch (S791) fault.
F15Does not play even if the PLAY button is pressed.Pickup rest position detect switch (S701) fault.
F26Disc not move even if the PLAY button is pressed. System control and servo processor IC (IC451, IC702) fault.
● 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.
FL error
code/display
SymptomProbable
cause
Signal to checkNormal voltage and waveform values
Signal
name
LocationPLAYSTOP
E01Focus and
tracking
offset
adjustments
not
completed
in the
specified
time
period.
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.
MDATA IC702-8
pin
0.3 V0 V
MCLKIC702-7
pin
2.9 V
MLDIC702-9
pin
2.9 V
/RSTIC702-
18 pin
2.9 V2.9 V
X1 INIC702-
58 pin
X2 OUT IC702-
59 pin
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.
FEIC702-
32 pin
1.7 V
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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
●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
❍( )
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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 control signal output
23LED CLK-Not used, open
24LED DATAOLED data signal output
25LED GRNOGreen LED control signal output
26MSELOFunction select signal output/(Connected to VSS via resistor)
27MDATAOCommand data output for CD servo IC
28MCLKOCommand clock output for CD servo IC
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29MLDOCommand load output
30STATIStatus signal input
31HALH-CD mechanism motor speed control signal output (Not used, open)
32PL-Not used, open
33CWOCD mechanism motor control signal output (forward direction)
34CCWOCD mechanism motor control signal output (reverse direction)
35PSTN-Not used, open
36SW1-Not used, open
37SW2-Not used, open
38SW3IDisc tray open detect signal input
39SW5-Not used, open
40KEY2IOperation key signal input
41KEY1IOperation key signal input
42SW4IDisc tray close detect switch signal input
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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)
18DEFLVL-Not used, connected to GND
19ENVOEnvelope signal output
20GCTLISub-code frame clock signal input
21EQ SW-Not used, connected to GND
22TENITracking error signal input
23TEOUTOTracking error signal output
24FEOUTOFocus error signal output
25FENIFocus error signal input
26VREFOReference voltage output
27TBALITracking balance adj. input
28FBALIFocus balance adj. input
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15.3 IC702 (MN662790RSC):/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 (f=4.2336 MHz)
(Not used, open)
20CSEL-Frequency control terminal of crystal oscillator (Not used, connected to GND)
21TRV-Traverse servo control signal output
(Not used, open)
22TVDOTraverse drive signal output
23PCOTurntable motor drive signal output (L: ON)
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63FCLKOCrystal frame clock
64IPFLAG-Interpolation flag terminal (Not used, open)
65FLAG-Flag terminal (Not used, open)
66CLVS-Turntable servo phase synchro signal
(Not used, open)
67CRC-Sub-code CRC check terminal
(Not used, open)
68DEMPH-De-emphasis ON signal (Not used, open)
69RESY-Re-synchronizing signal of frame sync.
(Not used, open)
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
(Not used, connected to GND)
80SSELISUBQ output mode select signal input
(Not used, connected to VDD)
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1/RST-Not used, open
2NC-Not used
3IN2IMotor driver 2 input
4PC2ITurntable motor drive signal input (L: ON)
5NC-Not used
6IN1IMotor driver 1 input
7NC-Not used, open
8PVCC1IDriver power supply terminal 1
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 manufactures 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 availability is dependenton 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.