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DX-7555
Ref. No. 3911 122005 / 092006
SERVICE MANUAL
COMPACT DISC PLAYER MODEL DX-7555
ON
STANDBY
OPEN/CLOSE
1 4 7 10
2 5 8 10/0
3
SEARCH
6
MEMORY
9
ENTER
CLR
DIMMER
DISPLAY
ENTER
SETUP
RANDOM REPEAT
RC-625C
Black, Silver and Golden models BMPP SMPP GMGT GMGR GMDT BMDC SMDC 230-240V AC, 50Hz 230-240V AC, 50Hz 220-230V AC, 50/60Hz 220-230V AC, 50/60Hz 120V AC, 60Hz 120V AC, 60Hz 120V AC, 60Hz
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ON THE SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE THESE COMPONENTS WITH ONKYO PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL. MAKE LEAKAGE-CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER.
DX-7555 SPECIFICATIONS
Signal readout : Frequency response : SN ratio : Audio dynamic range : THD (total harmonic distortion) : Audio output Digital optical : Audio output / Impedance Digital coaxial : Audio output / Impedance Analog : Power supply :
Optical non-contact 2 Hz - 20 kHz 111 dB 100 dB 0.0027%
-22.5 dBm
0.5 Vp-p, 75 ohm
2.0 V (rms), 470 ohm AC 230 - 240 V, 50 Hz AC 220 - 230 V, 50/60 Hz AC 120 V, 60 Hz
Power consumption : Standby power consumption :
16 W / 14 W European : 0.5 W North American : 0.3 W Others : 0.4 W / 0.3 W
Dimensions (W x H x D) : Weight : Operation condition Temperature, humidity : Supported discs :
435 x 111 x 405 mm 8.0 kg
5 - 35
, 5 - 85 % (no condensation)
CD, CD-R, CD-RW, MP3 (Discs that have not been properly finalized may only be partially playable or not playable at all.)
Specifications and appearance are subject to change for improvement without prior notice.
DX-7555 SERVICE PROCEDURE-1
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING
This set employs a laser. Therefore, be sure to follow carefully the instructions below when servicing. WARNING!! SERVICE WARNING : DO NOT APPROACH THE LASER EXIT WITH THE EYE TOO CLOSELY. IN CASE IT IS NECESSARY TO CONFIRM LASER BEAM EMISSION, BE SURE TO OBSERVE FROM A DISTANCE OF MORE THAN 30cm FROM THE SURFACE OF THE OBJECTIVE LENS ON THE OPTICAL PICKUP BLOCK. Laser Diode Properties Material: GaAS/GaAlAs Wavelength: 760-800nm Laser output: max. 0.5mW* Emission Duration: continuous *This output is the value measured at a distance about 1.8mm from the objective lens surface on the Optical Pickup Block.
LASER WARNING LABEL
The labels shown below are affixed. 1. Warning label
DANGER:
INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCK FAILED OR DEFEATED. AVOID DIRECT EXPOSURE TO BEAM.
CAUTION:
HAZARDOUS LASER AND ELECTROMAGNETIC RADIATION WHEN OPEN AND INTERLOCK DEFEATED.
ATTENTION:
RAYONNEMENT LASER ET ELECTROMAGNETIQUE DANGEREUX SI OUVERT AVEC L'ECLENCHEMENT DE SECURITE ANNULE.
2. Class 1 label
LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT
CLASS 1 LASER PRODUCT
Printed on rear panel
PRECAUTIONS
1. Ground for the work-desk. Place a conductive sheet such as a sheet of copper (with impedance lower than 10 Mohm) on the workdesk and place the set on the conductive sheet so that the chassis can be grounded. 2. Grounding for the test equipments and tools. Test equipments and toolings should be grounded in order that their ground level is the same the ground of the power source. 3. Grounding for the human body. Be sure to put on a wrist-strap for grounding whose other end is grounded. Be particularly careful when the workers wear synthetic fiber clothes, or air is dry. 4. Select a soldering iron that permits no leakage and have the tip of the iron well-grounded. 5. Do not check the laser diode terminals with the probe of a circuit tester or oscilloscope.
DX-7555 SERVICE PROCEDURE-2
1. Initialize the unit.
(1) Press and hold down the STOP [ (2) Press and hold down the STOP [ FL display ] button, then press the FF (fast forward) [ ] button. All segments light up. ] button, then press the PUSH TO ENTER (JOG) button. --->
0
0:00
NO DISC
(3) Press the POWER button to turn off the unit. (4) Disconnect the AC power cord from a wall outlet.
2. Check the version of Main microprocessor (Q8005) and Servo microprocessor (Q1001).
(1) Connect the AC power cord into a wall outlet. (2) Press the POWER button to turn on the unit. (3) Change into the state of "NO DISC". (4) Press and hold down the STOP [ ] button, then press the FF (fast forward) [ The first press lights up all segments. Main microprocessor version ---> Servo microprocessor version FL display
] button twice.
MA 050830A --->
SRV 5805A ---> MODEL00 00 --->
NO DISC
(5) Press the POWER button to turn off the unit. (6) Disconnect the AC power cord from a wall outlet.
3. Setting position before shipment.
(1) POWER button : OFF (2) PHONES LEVEL : MIN.
4. Take out the Disc.
If cannot take out the disc, please take out disc as follows. (1) The lever in the direction of the arrow. (2) The tray is slowly drawn out by the hand.
--- Bottom view ---
Lever
Front panel
DX-7555
EXPLODED VIEW
A901 A110 x 10 pcs. A141 U02 A109
D
A141 U10 E004 E006 A026 x 3 pcs. A018
P901
A B
C
U01
A124 A105 x 4 pcs.
Refer to "EXPLODED VIEWS OF MECHANISM"
P1002
D
Z008
C
P1003
P7001
A
A024 x 4 pcs.
A090
B
With MECHANISM
A012 x 10 pcs.
U06 A010 A012 x 6 pcs. A044 A012 x 6 pcs. A130 A052 A012 x 2 pcs. A012 x 3 pcs.
A073
A072 x 3 pcs. U04 E012 A141 A006 E011 A090 A090 A004 A090
A028 A030 x 2 pcs. A126 U08 A012 U05 A076 x 4 pcs. U07 A090 A088 U09 x 2 pcs.
L001 T902 U03
A128 A012
A002
A070 x 2 pcs. A042 A012 A060 x 2 pcs. x 2 pcs. A048 A058 A012 x 5 pcs. A014 x 4 pcs. A036 A038 A062
A032 A068
A090 A020 A040
A034
A066 A108 A102 A104 x 3 pcs. A100
A136 x 2 pcs. A060 x 2 pcs.
A074 x 4 pcs. A056
A103 x 4 pcs.
A074 x 8 pcs.
A016 x 4 pcs.
DX-7555
DX-7555 EXPLODED VIEWS OF MECHANISM-1
CD LOADER MECHA. Z001 : MGD-34 Parts No. 24800055C
CD MECHA. = Loader mecha. : "MGD-34" + Drive unit : "KSM-213CLCM"
33
18 x2
25
18 x2 12 06 26
13
05 16 18 x2 21 21 09 11 18 20 x2
15 Z006 Z007
Z003 Z005 (Silver)
Z002 08 Z003 x2 Z004 x 2 (Gold) 30 17 03 28 07 23 18 24 10 32 19 22 31 x2 01 Z006 x 2 19 04 03 02 14 20 Z006
Drive unit : KSM-213CLCM Refer to "EXPLODED VIEWS OF MECHANISM-2"
Z003 Z005 (Silver)
DX-7555 EXPLODED VIEWS OF MECHANISM-2
CD DRIVE UNIT : KSM-213CLCM
54
53
55
OK
61
51
NG
52 58
56
57
PARTS LIST
REF. NO. 51 52 53 54 55 56 57 58 61 PART NO. (SN) X-2625-877-1 X2625-769-1 2626-908-01 24810023 7621-255-15 24840008 1639-678-12 1-564-722-11 8848-483-05 DESCRIPTION Motor chassis ass'y Motor gear ass'y Sled shaft Gear (A) (S) P2 x 3, Screw Leaf switch Motor PC board Connector 6pin KSS-213C, Pickup Q'TY 1 1 1 1 2 1 1 1 1
DX-7555
A B
VSW_CPU 100/16 C1011
+
C
3 Q9001 78M05 1 O I G 2
D
SCHEMATIC DIAGRAMS-1
NOTE
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY. REPLACE ONLY WITH PART NUMBER SPECIFIED. VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE. (NO INPUT SIGNAL) ) ARE IN uF/WV. ELECTROLYTIC CAPACITORS ( ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED. EX) 030 3pF 330 33pF 331 330pF 333 0.033uF ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED. THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS. EX) PRINTING SIDE CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
U01 : MAIN CIRCUIT PC BOARD NAAR-8645
C9001
5
OP
GND_CPU
L1001
2.2u
CDSVRST_1
R1001 NM
5
VDD_CPU R1002 10K R1003 R1004 R1007
3 2 1
1
GND_CPU
C1015
R1008
C1013
R1072
A
V
R1015 10K R1073
0 R1014 0
R1013 0 R1016 0
Q1005 TC7WZU04FU
4 3 2 1
P9011A P9011B
C1012
104Z NC
R1075
GND
ACINLET 1
VD
2
EXCLK
R1019 10K
10K
R1020 R1022 R1023 R1024 R1026 R1028 R1030 R1036 10K
R1021 0 0 0 0 REQ CDRESET
Only
P2004
R1038 100
R1039 100 R1040 0
C1007
R1041 0
R1042 0 R1043 0 R1044 0
R1045 0
104Z
R1046
2
GND_CPU C1019 0
5 VDD_CPU
CDCLOCK_1
CDCLOK_2
CDSENS_1
CDDATA_2
CDDATA_1
CDSVAK CDSVSI CDSVSO CDSVCK CDSVRE
CDXLT_1 EXCLK
BLM21B222SPT R3001
C3001 T3001 NSRF-2046 224 C3002
+
P3001 COAXIAL
L3003 C3006 C3003
150 R3002 223 150
22/50 C3005 C3004 223
DIGITAL OUT
223
223
100
3
R3003
L3001 CDCLOSE BLM21B222SPT L3002 BLM21B222SPT +3.3V CDOPEN
CDCLOSESW
CDOPENSW
R1049
1SS355
VCC Q3001 74HCU04AF
CDFOK_1
R3005
330/16
C3012
R1057
7 GND 6 5 4 3 2 1
+
P3002A
+
R1047
R1058 0
C3007
C3013 104
0
0
Q1004
1K
330/16
560
560
GND_D R3004
R1059
R1060
3
C3014
R1065 R1068
R1066
R1061
3 IN 2 V 1 GND
R3006 C3009 C3010
R1062 0
560
U3002
DOUT_1
3 2 1
TC7WT241FU 1 G VCC 2 A1 G 3 Y2 Y1 4 GND A2
8 7 6 R1063 5 0
TC7WT241FU 1 G VCC 2 A1 G 3 Y2 Y1 4 GND A2
8 7 6 5
0
TC7WT241FU 1 G 2 A1 3 Y2 4 GND
R1069
R1050
U3001 TOTX141 3 IN C3011 2 V 1 104 GND
C3008
R1052
ACK_1 C1009 104Z Q1002 C1010 104Z Q1003
R1051 47 C1008 104Z
R1053 560 1K R1055
ACK1
8 9 10 11 12 13 14
560
CDXLAT_1 CDCLOCK_1 CDDATA_1
D1001
390
CDSVRST
8 VCC 7 G 6 Y1 5 A2
OP_+8V
R1056 1k R1070 1K R1064 1K R1067 1K L2004 2.2u R2063
NC Vpp/test EV5V RST CDSVCK CDSVSI CDSVSO CPUGND
CDOPENSW
IREQ_1
ACK_1
R1033 R1037
0 0
CDSVSO CDSVSI
GND_CPU
CDFOK
C1017
R1034 10K
C1018
10K
CDRESET
CDSCORI
CDDATA2 CDXLAT1
CDCLOK2
GNDD 2
C2PO 3
VDDM
C2002 104Z C2003+ 470/16
P1001
6
GNDM 8 7 6 5 VDSPD3.3V
R2072 C2004 0 104Z R2007
CDDATA2 IREQ
for_Loading_Motor
M
5.6K R2008
CDSCORI 6 CDFOK
TP2001 COUT
GNDD
C2006
104
C2008
TRACKING
CH1OUTF CH1OUTR CH2OUTF CH2OUTR POWVCC VREFIN GND
CH2RIN CH2FIN CH1RIN CH1FIN SW OPIN+ OPIN-
4
P1004B Val
15 16 17 18 C2025 19 104Z 20 21
C2029
104Z
1000/16
R2039 0
C2030
5V 2.5V
6
FOTRTRFO+ PD VR LD LD-G F C B A D E +5V VC
FOCUS
P1005B
FO+ TRTR+
C2013 104
6
pick short terminal
FRDR FFDR TRDR TFDR
R2016
104Z
TP2003 MIRR TP2004 DFCT R2021 10K 0 TP2005 LOCK
7 6 5 4 3 R2018 2 0 1
4 3 2 1
FO-
R2019 0 C2014
R2020 472 22K R2037
12 PD 11 LD 10 F 9 B 8 D 7 6 5 4 3 2 1
R2022 SFDR R2023 R2025 R2027 R2030 R2032 R2034 0 0 0 0 0 0
CH4OUTR CH4OUTF CH3OUTF CH3OUTR POWVCC MUTE GND
CH3RIN CH3FIN CH4IN CH4CAPA OUTVREF OPOUT PREVCC
Q2002 BA5947FP
E A C
SRDR TFDR TRDR FFDR FRDR AVD1_+3.3V
+
R2040 C2032 681 C2033 NM C2034 102 C2035 NM VC E F A B C D SSTOP PD PDSENS LD C2037 100/16
+
0 0 R2044 15K R2046 15K
+
R2047 R2048 R2049 R2050
0 0 0 0
C2043
LD_GND VDDPIC P1003 for_SL_SP_Motor C2052
+
M M
L2001 2.2u
104
3.3
C2059
5
SP+ SPSL+ SLSSTOP 3.3V
6 SP+ 5 SP4 SL+ 3 SL2 SSTOP 1 VDSPD3.3V
GNDD
100/16 C2058
P2002 for_Jitter_Measure
C2063 100/16
470K
2 1
Q2007 UPC2906HF 3
330/16 C2069 C2064
+ +
RFAC VC
G
O
I
1
C2067
D2001
L2005 2.2u
+
Q 2S
2
MECHA_+B GNDM
33
61 62 63 C2045 104Z 64 65 104K 66 C2048 67 C2049 104K NC 68 69 70 R2060 15K R2057 C2046 71 332 72 0 73 C2053 R2055 R2051 74 10K 75 474K 100K C2040 103K 76 R2058 1M R2052 77 470K 78 C2047 104K C2051 79 80 152K C2041 81 R2056 104K 3.3K R2054 82 R2053 1K 4.7K 83 84 C2050 100/16 85
104Z C2044 R2061 0 C2062 NC R2065 C2061 101 R2062
AVD2 RFDCO PDSENS AC_SUM EQ_IN LD PD RFC AVS2 RFACO RFACI AVD3 BIAS ASYI ASYO VPCO VCTL AVS3 CLTV FILO FILI PCO SRAMVSS1 SRAMVDD1
U02 : CONNECTOR PC BOARD NAETC-8736
PDSENS
VDDPIC GNDD
VC
SL+ SL-
SP+
SP-
R2041 R2043 0
R2045 0 C2036 100/16
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
MIRR DFCT FOK DVSS4 DVDD5 DVSS5 LOCK MDP SSTP IOVSS4 SFDR SRDR TFDR TRDR FFDR FRDR IOVDD1 AVD1 AVS1 E F TEI TEO FEI FEO VC A B C D
14 13 12 11 10 9 8
CN12
fin
29
fin
30
CDRESET
22 23 24 25 26 27 28
SRAMVDD4 SRAMVSS4 COUT DVDD4 SCOR C2PO GFS XPCK XUGF WFCK SENS SRAMVDD3 SRAMVSS3 DVDD3 XLAT ACK REQ XLAT2 DATA2 CLOK IREQ DVSS3 XRST XTACN
0
30 29 28 27 26 25 R2009 0 24 R2010 0 23 R2011 0 22 R2012 0 21 TP2002 WFCK 20 19 18 C2005 104Z 17 16 15 14 13 12 11 10 9 8 R2005 7 6
15K
LD+ LDINSW DGND OUTSW
5 4 3 2 1
LD+ LDCDCLOSESW GND_CPU CDOPENSW
1 FWD_IN VCC 2 M+ Q2001 REV_IN 3 M- BD7931F CONT 4 POWGND PREGND
2.5 1.5 to 1.6
TP2006
3.3
MNT2 4 MNT1 5 MNT0 6
UJJ ELSE R3005 NC 0 R3006 0 NC C3014 104 NC U3002 NC
P2001
Error_Rate
CDSENS
Q2003 CXD3014R
ACK
1
CDXLAT_2
R1032
0
CDSVCK
R1035
CDCLOSESW
8 FLASHHS 7 FLASH_VPI 6 5 FLASHRST 4 FLASHCK 3 FLASHO 2 FLASHI 1
R1025 R1027 R1029
0 0 0
CDSVRE FLASHVPI VDD_CPU CDSVRQ CDSVRST
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
GPANI5 GPANI6 GPANI7 AVSS GPANO0 GPANO1 AVREF1 CDDATA2I CDDATA2O CDCLOK2 CDSENS CDDATA CDCLOK CDSVAK CDSVRE/FLASHHS CDSVSI/FLASHI CDSVSO/FLASHO CDSVCK/FLASHCK CDSVGPO CDXLT
P9004
5
CDOPEN
R1074
R1018
CDANAMUT
CDCLOSE
Q1001 MPD78F4225GC
R1017 R1031 1K
5 6 7 8
CDSVRE
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH FUSE OF SAME TYPE AND RATING INDICATED.
R1009 100
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
CDSVRST GPIO7 GPIO6 GPIO5 GPIO4 GPIO3 GPIO2 GPIO1 GPIO0 VDDVOLTAGE NC NC NC NC NC NC NC NC NC NC
R1005
A
R1010 R1011 100 100
CDSVGPI CDSCORI CDSVRQ CDIREQ CDACK NC VSS0 VDD1 X2 X1 TEST/VPP NC GND VDD0 AVDD GPANI0 GPANI1 GPANI2 GPANI3 GPANI4
CDRW CD2SPD CD4SPD CDCLOSESW CDOPENSW CDCLOSE CDOPEN VSS1 CDANAMUT CDDACMUT CDDACSO CDDACCLK CDDACCS CDDACRST CDEMPHASIS CDLAT2 CDPOWER CDREQ CDRESET CDFOK
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
10K
CAUTION
ATTENTION AFIN D'ASSURER UNE PROTECTION PERMANENTE CONTRE LES RISQUES D'INCENDIE, REMPLACER UNIQUEMENT V PAR UN FUSIBLE DE MEME TYPE ET CALIBRATION COMME INDIQUE.
C1016
C1014
R1006
10K
10K
60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
10K
NC
10K
TP1001 CDRW TP1002 CD2SPD R1012 TP1003 CD4SPD
DX-7555
E
P-OFF
Q8001 RN2403 EV+5V RI_OUT R8003 C8001 220 R8002 D8002 100 R8054 10K C8003 104Z
F
G
H
C8002
2.2/50
R8058
D8005
R8050
D8007
G
VCC
104
3 NC 2 VSS 1 DS
104Z C8007
P-ON
OUT
4 5
2
47K D8004
D8008 BACK_UP_EV5V 1K D8006
OP_+8V
+
G
Q8004 S-80145CLMC
R8001
R8061
Q8002 BR93L56F-WE2 5 DI 6 DO 7 GND 8 NC 4 SK 3 CS 2 Vcc 1 NC
Back up circuit
Q9006A 78M56 1 3 I O Q9006B S-812C56AUA-C3E-T2 3 2 I O
330/16
L8001 BLM21B222SPT R8011 470
C8004 473
3 2 1 4
Q8003 RN1407 RST D8001 C9025 104J
RI
C8005 473
RST
+
P-ON EV EV_GND P-OFF
R8066
C8022
10K
33P
RST P-ON ACLKSTP5 ACLKSTP4 ACLKSTP3 ACLKSTP2 ACLKSTP1 EEPROMDO EEPROMDI EEEPROMCLK EEPROMCS SYSOUT NC NC NC NC NC NC NC NC
P-OFF_1
RI_IN R8008 100 CDSVRE R8010 10K X8001 12.5MHz R8012 10K C8006 104Z R8055 R8056 K0_1 2.7K BACK_UP_EV5V R8016 0
GPANI5 MODEL1 GPANI7 AVSS ACLKADJ NC AVREF1 GPANI NC GPANI CDSVSO CDSVSI CDSVCK EXCLK SUBRST SUBSO SUBSI SUBCL SUBREQ NC
SYS_GND
ESET
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
EXILIN POFF SYSIN CDSVRE INTK0 EXIRIN VSS0 VDD1 X2 X1 TEST/VPP NC GND VDD0 AVDD MODEL GPANI1 K0 GPANI3 GPANI4
Q8005 MPD78F4225GC
DACCLK DACSDO DACLAC NC DACRST NC STBYLED VSS1 NC NC NC NC NC CDIC_SEL NC NC NC CDSVRQ CDSVAK CDSVRST
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
DAC_CLK DAC_SDO
DAC_LAC REQ_1
no saving mode
100 100 100 100
P-SUPPLY R7005 SUB_REQ 20 R7002 SUB_SO 19 R7003 SUB_SI
DAC_RST
R8013 0 STBY_LED
SO_1 SI_1 CL_1
18
R7004 SUB_CL 17
-Vdisp_C 16 SUBRST_1
R7010 R7011 10k 10k test DIS_GND C7001 470/16 C7002 104J 100 R7001 SUB_RST 15
BACK_UP_EV5V
R8048 10K R8049
P2005
1
NC Vpp/test EV5V RST CDSVCK CDSVSI CDSVSO CPUGND
I O Q7001 78M05
3
C7004
+
D7001 RL1N4003 C7003 330/16
R8014 0 CDSVRQ R8015 CDSVAK 0 CDSVRST C8023 33P R8017 0
Q7002 2SD1644
Q7003 2SD1644
330/16 D7002 RL1N4003 J1507 0 0
INT_K0_1 K0_1 STBY_LED REMO_IN_1 DIS_COM+5V
R7007 R7008 R7006 R7009
GND GND +5V -VDISP -VDISP_GND FLAC1 FLAC2 EV_GND INT_K0 K0
100
C8008
104Z C8010 2.2/50
R8057 R8060
R8062 C8020 10K 33P R8018 0 CDSVSI R8019 0 R8020 0 R8051 100 EXCLK
C9022
R8053 10K
REMO_IN_1 INT_K0_1
10K
560K R4067
R4066
220K
C8024 test K0_1 C8013 104Z R8059 33P 47K ACLOCKADJ_1 CDSVCK C8021 2.2/50
+
R4065 0 R4068 0 Q4011 2SA1162-Y R4055
SUBRST_1
REQ_1
SO_1
CL_1
SI_1
C8018 33P
C8019 33P
4.7
R4057 0
J1508
SYS_+5V
R8052
D9001
104Z
Q4013
UDZS4.7B
MUTEGND
R8021 0 R8022 0 R8023 0
R8024 0 R8025 0
2SA1162-Y
+
-5
MUTE_+B MUTE_R MUTE_L R4056 560K R4053 R4054 220K 220K
FL_AC_H
FL_AC_L
CDSVSO AMUTE CDSVRQ
560K
Q4010 2SA1162-Y R4058 0 MUTEGND
EV_GND_1 -VDISP_GND_1
AC_-VDISP DIS_COM+5V DIS_GND
DAC_LAC R8028DAC_CLK R8029 560 DAC_SDO
DAC_RST
R4011 2.4K R4001 R8030 560 R4003 C8017 103 C8014 33P C8015 33P C8016 33P +B_L R4009 2.4K C4007 C4011 332 102 1.2K R4005 1.2K R4007 C4009
C8009 104Z
CDSVRQ CDRESET
C4017 R4015 10K
-13
R4029 R4031 22K R4023 22K 1.5K
560 R8046 1K
REQ
R8027 560
R8047
5.0
100
R8031
5
Q4003 NE5532AP
8
7 R4013
10K
2 3
Q4003
8
6
102
1
NE5532AP
R4039 4.7K 1.5K
R1048
R8065
R4033
1K R8032 R8034 1K
R4021 1.5K NE5532AP C4019 182
NC
4
2 Q4005 3 4
R4027 22K
560
1 6 5
R4035 J1503 R4037
R8064 0 R1054 1K
Q8006
28 R8005 0 27 R8006 0 26 R8007 0 25 24 R8036 10K 23 22 R8009 0 21 20 19 18 17 16 15
C8012
104Z R8026
8.0
NE5532AP
100
C4021 J1505 100/50 R4043 NE5532AP
220 Q4007 2SD655 470K
220 Q4009 2SD655
1
NE5532AP
5
6
C4029 102
OP_+8V_1
8
4
1K
Q4005
7
R4041
100/50 C4023
+ +
2
3
JL0004
MUTE_-B
R4047
R4051
2
ACLOCKADJ
Q8006
C4030
C4005 47/50
4
R4049 C4027 104J 10K
3
334
R4045
ML/I2S MC/DM1 MD/DM0 MUTEB MODE CSBIWO RSTB ZERO AVDDL AGNDL VMIDL VOUTLP VOUTLN AVDD
R4025
C4025 104J
10K
22(1/2W)
R4017 22(1/2W)
R4019
R1056 1k
470/16 470/16
22K
C4013 C4015 + +
76 PINJACK EV_GND_1 FL_AC_L
FL_AC_H DIS_GND DIS_COM+5V
7
2 1
Q4001 WM8740
LRCIN DIN BCKIN MODE8X SCLK DIFFHW DGND DVDD AVDDR AGNDR VMIDR VOUTRP VOUTRN AGND
470K R4046
C4024 104J
R4050
C4026 104J
22K
10K
1 2 3 4 5 6 7 8 9 10 11 12 13 14
067 1K R2001 560
+
C4010
J1502 332 -B_R R4028 C4018 182 R4034 1.5K
R4044
470/16 470/16
C4006
R4010 2.4K
102
3
R4036
J1504 Q4004
R2069
R2068
R2067
R2066
+B_R
4
22K
1
100/50 C4022
+ +
R4048 220 HP_MUTE
R4052 220
C2001 473
R2002 1K
R4006
3 2
NE5532AP Q4002 R4012
5 1 R4014
10K
4
R4008
NE5532AP R4022 1.5K
5 6
Q4004
2
7
R4040 4.7K
R4042 C4020 100/50
3.3 VDSPD3.3V VDDC1.8V/2.5V GNDD
R2005 R2006 47K
1.2K -B R4002
8
1.2K R4004
R4030 R4032 R4016 10K C4016 R9001 22(1/2W) -B_HP R4062 470/16 22K 1.5K
2.4K C4008 102
8
6
Q4002
7
MUTE_GND_2
R4024 22K
NE5532AP
MUTE_GND_3
R2013 22 R2014 22 R2015 22
MUTE_+B
C4004 470/16
474 C4032
G
10K R4064 10K HP_-B HP_+B
XRST XTACN BCKI BCK PCMDI PCMD LRCKI LRCK
SRAMVSS1 SRAMVDD1 SRAMSTB DVDD1 DVSS1 TEST1 DATA CLOK2
-VDISP_GND_1
22000/50
DSP_GND
DIS_GND
C2039 100/16
C2038 104Z
C9017
330/16
VDSPD3.3V
C9016
+
R9023
+
VSW8V
3
DSP_+8V
1K(1W)
2
10K C9014
4.7K 83
84 85 86 87 88 89 90
R9006 33(1W)
DSP_GND
VDDC1.8V/2.5V
GNDD C2054 C2050 100/16 C2055 22/6.3
2.5
ACM_H ACM_L
G
GNDM
R8057 R8060
Q9004 78M08 1 O I
DIS_COM+5V
10K R9021 R9017
IOVSS3 IOVDD3 AVD5 AOUT2 VREFR AVSS AVS4 VREFL AOUT1 AVD4 XVDD XTAI XTAO XVSS PLLAVS PLLAVD IOVSS2 TEST TEST DOUT IOVDD2 DVDD2 DVSS2 TEST6 TEST5 TEST4 TEST3 TEST2 VDD2 VSS2
120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91
104Z L2002 2.2u C2011 104Z C2012 47/50 C2010 22/50
+ +
C9007
DGND
R9007
P_GND
1k
A+5V
3
C9009
3.3
2
G
O
I
1
JL0002
470/16 C9021
A_GND
R4063 AOUTL
+
APGND C2016 104Z 47/50
+
Q9003 78M05
R4061 10K
10K
HP_MUTE MUTE_GND_2 HP_OUTR 1
HP_OUTL
JL0003
2 3
Q4012A
C2015 22/50
C2017
1 2 3 4 5 6 7 8
+
L2003 2.2u R2026 0 R2028 C2022 VCONT_MPU C2068 223 223 R2074 0
ACLOCKADJ DAC_SCLK
R2035 XTAI
R9003
+B_HP C9024
R4059 10K D9008 2200/25
NE5532AP
MUTE_+B_1
22(1/2W)
+
RL1N4003 D9009
R2075
+
C2028
104Z
VD+3.3V GNDD CLK2V CLK3.3V GNDD
470/16
DGND
0
C9023
APGND
P_GND
150
R2031 C2024 0 104Z
10K R2036
JL0001
MUTE_GND_1
3 I O Q9005 UPC29M33HF
SERVO_+5V
474
22
G
C9011 C9010
2
2 2 1
D9007
R2042
DOUT
RL1N4003
1 2 3
P3002B
R9008
0
8
R9022 1
4
3.3
GND_CPU
SUB_GND
NC R9024
R9020
10K R9010
R9009 0
R9018
J1506
10K C9013 +
C9019
22000/50
P001B
0
CXD3014R CXD3014AR NC 0 ohm NC 0 ohm
8
D9002 D5SBA20
+
3
P703 For_Freq_Measure
0.22(1W)
1 2 3 4 5 6 7
1 2 3 4 5 6
1
MUTE_GND
P9001 For_M_PT
474
P7002
C2007
+
Q9002 UPC29M33HF 1 3 O I 2
HP_-B
C9020
DACBCK DACDATA DACLRCK
D+3.3V
5 6
4
NE5532AP Q4012B
8 7 6 5 4 3 2 1
+
AOUTR
10K R4060
7
C4028 102
0
0
0
0
NE5532AP
Q4006 2SD655
Q4008 2SD655
5
064 1K
C4002 474 100/50 C4031
C4012
+
C4014
+
1K
AC_-VDISP
-VDISP_GND_1 D9003 RL1N4003 GNDM D9004 RL1N4003 D9005 RL1N4003 GNDM D9006 RL1N4003
0
2.5
G
R2059
3.3
+
2
+
004
2u R2063 33 R2064
L2005 Q2006 2SA1162
2.2u
100/16
C2065
104 C2066
+
3.3
+
R1071 0
33
1000/16
C9018
3 O I Q2005 MPD120N25T1B 1
MECHA_+B
+
P4001
10K
070 1K
R4026
R4038
47/50
R4018 22(1/2W)
+
R4020
C4003
+B
22(1/2W)
3
Val
+
P7001
100
14 13 12 11 10 9 8 7 6 5 EV_GND 4 LED 3 EV+5V 2 REMO_IN 1
2
8 7 6 5 4 3 2 1
J1501
G
+
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
+
P9033
D8003 UDZS5.6B
1 2 3 4 5
C8011
60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
0.1F
From_S_PT
R8004
220K
C9003
1
C9004
5
+
P3101 RI_JACK
OP_+8V
RI
DX-7555
A B C D
FL_ON/OFF JOG_A
SCHEMATIC DIAGRAMS-2
NADIS-8650
U06 : DISPLAY CIRCUIT PC BOARD NADIS-8650
R8802 R8803 4.7K JOG_B KEY_0 KEY_1 4.7K 0
R8902
F11 F12
1 P23 40 P29 34 P24 39 P25 38 P26 37 P27 36 P28 35 P30 33 P31 32 DSC_IND_LED3 31 DSC_IND_LED2 30 DSC_IND_LED1 29 DIGI_OFF_LED 28 2
TRAYLED2 27
VDD_0 25
0
1
41 P22 P15 P14 P13 P12 P11 P10 P9 P8 P7 P6 P5 P4 P3 Q8101 P2 P1 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
P15 P14 P13 P12 P11 P10 P9 P8 P7 P6 P5 P4 P3 P2 P1
R8903
2.7K R8801 2.7K R8800 AVDD 24 VSS0 23 K0 22 21 K1
FL_HSW 26
K2 20 K3 19 AVSS 18 TI 17
KEY_2
42 P21 43 P20 44 P19 45 P18 46 P17 47 P16 P15 48 P15 P14 49 P14 P13 50 P13 P12 51 P12 P11 52 P11 P10 53 P10 P9 54 P9 P8 55 P8 P7 56 P7 P6 57 P6 P5 58 P5 59 VDD_2 67 14G 68 13G 69 12G 60 -VDISP 61 P4 66 FIP13 C8504
TRAYBRIGHT 16 INTP_0 15 TRAYLED_1 14 SO_3 13 I_P22 12
R
L 47 R8606 47 R8604 47 R8602
Q8601
I_P23 11 SUBREQ 10 SUBSO 9 SUBSI 8 SUBCL 7 SUBREEST 6 IC 5 X2 4 X1 3 VSS1 2 VDD1 1 80 1G
DSC_
4
R8
4
R86
0
R86
70 11G
72 9G
73 8G
74 7G
75 6G
76 5G
77 4G
78 3G
79 2G
64 P1
62 P3
63 P2
G13 29
13G 12G 11G
71 10G
65 P36
R8600
6-BT-289GK
G9 G8 G7 G6 G5 G4 G3 G2 G1
33 34 35 36 37 38 39 40 41
9G 8G 7G 6G 5G 4G 3G 2G 1G
F22 44 F21 45
R8508 100K R8503 R8504
F1_OUT F2
F1_OUT F2
S800
3
R8102 470 S8103 S8102 R8101 390 DISP S8101
FF
FR
GND[SUB]
R8201 390 PAUSE STOP S8202 S8201
4
U04 : POWER TRANSFORMER PC BOARD NAPS-8647 U03 : POWER SUPPLY CIRCUIT PC BOARD U0 NAPS-8646
JL9001 R9101 1.0(1W)
8
C9115 472M
472M C9101 P9013A RL9001 472M L9001 NCH3564
1 2
1
P901 C9103 472M
T.F.
P9011
R9102 1.0(1W)
C9102
9
P9013
10 11 12
2
AS-CEE AS-CCC AS-UC-2 AS-JA HP-B R4102 22
P9013C C9104
4 1
4
2.2(1/2W)
5 6
9
R9201
10
0.47
R9103 2.2(1W)
R9202
15 16
4
DTC123JS HP+B R4101 22
8
13 14
Q9001
D9101 C9105 47/50
T9001
3
224
P9004C
P9003B
J9103(R9104)
NPT-1519GQ
3
T902
P_ON
104
D9102 D9103 C9111 C9108 474
C9106
NAPS-8647
NPT1451A
RL1N4003
H HP-MUT
HP-MUTE
470 HP-L
470
C9110
JL9033
18K P9022 C9114 R9206 8.2K R9204 27K C9113 UDZS5.1B OUT VSS2 VSS VDD 104 D9107 C9112 2.2/50 D9106 RL1N4003 D9108 RL1N4003
S9001
104
C9107 472
R9205
NC
R9203
0.47
5
P_OFF
U05 : POWER SWITCH PC BOARD NAPS-8648
104
SUB_GND
HP-GN P7002
D9104 6800/16 C9109 D9105 474
NAPS-8648
Q9002
NAPS-8646
NAET
47K
C8503
273
D8502
UDZS5.6B
2
G12 30 G11 31 G10 32
10G
HP
DX-7555
E F G H
R8800
SW-VP 2.7K R8709 R8708 2.7K 10K R8706 10K R8707 10K R8704 LED_8 DSC_IND_LED3 10K R8702 10K R8703 10K R8701 10K R8705
FL_ON/OFF
2.7K
SW-VP SUBREQ SUBSO SUBSI SUBCL SUBRSTIN SUBREQ SUBSO SUBSI SUBCL SUBRSTIN
7
606
7
SUBREQ 47 SUBSO R8605 SUBSI 47 R8603 0 R8601 1M SUBCL SUBRSTIN
P8001
04
7
02
220
X8601 12.50MHZ 104
C8805 C8806 R8991 0
C8701 220
C8803 220
+B[SUB] VP_ACH F1_IN
C8702 220
R8600
C8602 100/6.3 C8601
C8804 104
220
F2 GND KEY_0_EV_CHK KEY_0_EV
UDZS5.6B
2SA950-Y Q8503
NC R8505 4.7K
STABY_LED +5EV REMSENS C8506
D8502
D8506 C8507
NC
R8506
220K
C8503
UDZS27B
100/50V
100/50
FL_ON/OFF
R8507
C8502 D8501
C8501
47K
R8206 0
R8508 2SD1664 100K 470 10K Q8502 R8501
R8503
NC
MAIN_MICON
R8504
F1_IN 470 2SD1664 Q8501
U07 : STANDBY LED PC BOARD NAETC-8651 NAETC-8651
R8502 10K
ENTER
S8004
4
3
2
1
5
DOWN
JOG_A JOG_B UP
KEY_0
KEY_1
P8003B C8401 104
STABY_LED
+5EV
P8003A
KEY_0_EV_CHK
REMSENS
R8401
KEY_0_EV
C8101 47/6.3 C8102 104 R8116
GND
1.8K Q8401 RN1404 SML-512UWT88 D8401
R8117
47
R8402 NC R8403 NC
R8112 470 OP/CL PLAY S8003 S8002
R8111 390 STANBY
KEY_0_EV
0
RED
S8001
C8103 104
C8402 104
U8001 GP1UM27XK0VF STANBY_LED
U09 : HEADPHONE AMP. PC BOARD NAETC-8653
C4104 RNF 102 R4108 10K 4.7K R4106 R-IN 10K R4104 HP+BOUT R4110 220/16 C4102 C4101 220/16 22 HP-BOUT HP-MUTE 220K 22 HP-GND 5 6 Q4011 8 7 OPAMP 4 C4106 47/50 390 R4112 ROUT
U08 : HEADPHONE JACK PC BOARD NAETC-8652 NAETC-8652
R4102
JL4001A
JL4001B
C4108
102
RN1441 Q4002
R4101
R4103 20K HP-GND
HP-MUTE
L4001
4 5 6 3 2 1
P4001
HP-GND HP-L L-IN
220K
HP-R
R4111
C4109
P-MUTEGND
HP-MUTE GND 104
C4107
Q4003 RN1441 10K R4105 4.7K R4107 10K R4109 C4103 102 2
LNF
3 Q4011 1 C4105 47/50 OPAMP 390
LOUT
R4113
ETC-8653
C4111
C4121 102
102
DX-7555
A B C D E
SCHEMATIC DIAGRAMS-3
1
U10 : SUPER PRECISION CLOCK PC BOARD NADG-8725
TP1 CLK3.3V
TP2 VDDA+3.3V
L001
10u R002 47
VDD+3.3V VDD+3.0V TP3 VDD+3.0V
R003 10KF C003 10/16 R006 C004 105Z C006 103K Val
220/6.3
R001 Val C001 105Z C002
TP4 16.9344M
R014 22K
R009
Val
R010
Val
1 NC 2 3 NC
VAL
2
P001
2.2KF
R007
C005
R013
C009
102J
R016 E001
R012 2.2KF Val
TP7 CLK2V
3
C008
6 5 4 3 2 1
VD+3.3V GNDD CLK2V CLK3.3V GNDD VCONT_MPU
TP5 VCTRL
R011 Val
X001 4 1 Vcont Vcc DSA535SB 3 2 GND Output
Q002 NJM2373AF
R005 18KF
R004 12KF
C007
TP6 GND
470
GND TC7WZU04FU Q001
VAL
105Z 470
2
R015
1 2 3 4
R008 1 Val 3
VD
8 7 6 5
5
Val
4
DX-7555
4
DX-7555
A B C D
PRINTED CIRCUIT BOARD VIEWS-1
U01 MAIN CIRCUIT PC BOARD (NAAR-8645)
Component side
1
2
3
4
U02 CONNECTOR PC BOARD (NAETC-8736)
Component side
5
DX-7555
E F G H
DX-7555
A B C D
PRINTED CIRCUIT BOARD VIEWS-2
U01 MAIN CIRCUIT PC BOARD (NAAR-8645)
Soldering side
1
2
3
4
5
DX-7555
E F G H
DX-7555
A (FROM SOLDERING SIDE) 1 U06 DISPLAY CIRCUIT PC BOARD (NADIS-8650)
Component side
C8501 J1041 C8506 J1003 P8001 J1001
27 20 30
B
C
D
PRINTED CIRCUIT BOARD VIEWS-3
C8501 C8502
C8507
STANDBY
2 20 15
J1002 J1006 J1005 J1012
20
D8506
Q8503 C8502 J1038
J1029
S8001
J1011
20 7
J1014 J1034
20
J1037
7
2
2
FR J1039
DISP J1036 S8101 J1026 J1032 J1010
22 25 25
J1027
S8103
S8102
25 20
FF
J1035
15
J1004
2
J1013
J1031
2
S8002
7
7
25138650D
30
J1040 J1007 J1008 J1009 J1042
J1016
12
J1015
2
NCDIS-8650
30
7
J1030
J1025
2
PLAY
STOP
2
PAUSE
2
S8004
3
S8003
S8202
S8201
Soldering side
D8501
R8505
4
R8506 R8111 Q8501 D8502 C8503 R8507 R8503 R8504 R8502 C8803 C8701 R8607 R8606 R8112 Q8502
R8206
R8501
R8102
C8702 R8904
R8508
C8806 R8907
R8906
R8905
C8804 C8805
R8101
R8201 R8803 R8802
5
R8117 C8602 R8701 R8702 R8703
R8116
15
OP/CL
2
U800
C8101
S8004
C8601
R8601 R8602 R8603 R8604 R8605
R87 R87 R87
DX-7555
E F G H
U10 SUPER PRECISION CLOCK PC BOARD (NADG-8725)
No PC board view. Look over the actual PC board on hand.
U8001A
U8001A
Q8101B U8001 U8001 J1021 J1028 J1022
27 27 15 15
Q8101A J1018 J1019 Q8101B Q8101A
X8601
01
C8504
J1024 J1023
7
Q8101 Q8101
J1020
30
J1017
R8116
C8103
C8102 R8600
Q 86
01
1
R8801
21
Q
86 01
61
R8800 R8704 R8707 R8705
R8706 R8708 R8709 R8901
R8902 R8903
41
P8003A
C8604
DX-7555
A (FROM SOLDERING SIDE) U03 POWER SUPPLY CIRCUIT PC BOARD (NAPS-8646) 1
3 ADD_+B P-OFF GND +B P-ON JL9033 J9006
12
B
C
D
PRINTED CIRCUIT BOARD VIEWS-4
NCPS-8646 25138646
E012
J9004 J9005 C9105 J9001 C9105 C9114
E9001
C9110
Q9002
C9109 C9113 J9002 R9206
12
C9109
D9107
C9106 R9201 D9104 D9105
J9008
2
R9205 R9204 C9112
7
7
C9108 R9202
7
J9003
D9102
D9103
C9111 R9203
D9106 D9108 T9001 J9007 T9001 Q9001 C9104
D9101
3
AC-G
P9011
E011
AC-H
4
U04 POWER TRANSFORMER PC BOARD (NAPS-8647) U05 POWER SWITCH PC BOARD (NAPS-8648)
S9001
T902
S9001
AC-H
P9022
JL9001 3 25138647 NCPS-8647
C9115
AC-G P9013
AC-G
AC-H
Component side
Component side
3
25138648
5
C9107
NCPS-8648
7
T-2 RL9001 P9013A WHIT RL9001 C9102
L9001 C9101 T-2
223
OR6
L9001
P9013C AC-G C9103 P-SW
P-SW
AC-IN
P9022B
P9022A WHIT
Component side
Soldering side
J9101 R9101
J9102 R9102
J9103 T902 R9103 AC-H AC-G
DX-7555
A (FROM SOLDERING SIDE) 1 U07 STANDBY LED PC BOARD (NAETC-8651)
C8402 C8401
B
C
D
PRINTED CIRCUIT BOARD VIEWS-5
P8003B
R8402
R8401
Q8401
0
D8401
R8403
NCETC-8651
2
Component side Soldering side
U08 HEADPHONE JACK PC BOARD (NAETC-8652)
L4001 6 L4001 C4108 C4111 C4107 1 P4101
E4103 JL4001B J4007 E4102 J4008
P4101
C4121 E4101
3
2 NCETC-8652
25138652
Component side
U09 HEADPHONE AMP. PC BOARD (NAETC-8653)
C4102 R4101 R4102
R4114 R4115
C4101
4
J4003 P7002
20
Component side
J4005
J4004
5
J4006 NCETC-8653 25138653
Soldering side
Q4112
R4110
R4111
Q4113
J4002
R4112
C4106
C4105
C4109 JL4001A R4113 J4001 Q4111 Q4111 C4103 3
C4104 R4103
R4109 R4104 R4105 R4106 R4107
R4108
DX-7555 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS-1
Q2002 : BA5947FP (4-ch BTL DRIVER)
BLOCK DIAGRAM
15 16 17 18 19 20 21
MUTE Vref
D LEVEL SHIFT D
D
14 13 12 11 10 9
D
D
19k PIN26 6.5k 10k Vref POW VCC 50k POW VCC 50k
D
D
POW VCC (ch3, 4) 50k 50k
D
POW VCC (ch1, 2)
50k
50k
8
R R INTER FACE F
F
F
R R INTER FACE F
22 23 24
7 6 5
F
100k 100k
R
10k PIN3
INTER FACE F
25
50k
4
SW
26 27 28
Pre Vcc
THERMAL SHUTDOWN
3 2 1
TERMINAL DESCRIPTION
No. PIN NAME 1 2 3 4 5 6 7 8 9 10 11 12 13 14 OPINOPIN+ SW CH1FIN CH1RIN CH2FIN CH2RIN GND VREFIN POWVCC CH2OUTR CH2OUTF CH1OUTR CH1OUTF DESCRIPTION Operational amplifier negative input terminal Operational amplifier positive input terminal CH4 input selecting switch terminal CH1 PWM forward input terminal CH1 PWM reverse input terminal CH2 PWM forward input terminal CH2 PWM reverse input terminal GND Internal Vref voltage input terminal Power part power supply voltage (CH1, 2) CH2 reverse output terminal CH2 forward output terminal CH1 reverse output terminal CH1 forward output terminal No. PIN NAME 15 16 17 18 19 20 21 22 23 24 25 26 27 28 CH4OUTR CH4OUTF CH3OUTF CH3OUTR POWVCC MUTE GND CH3RIN CH3FIN CH4IN CH4CAPA OUTVREF OPOUT PREVCC DESCRIPTION CH4 reverse output terminal CH4 forward output terminal CH3 forward output terminal CH3 reverse output terminal Power part power supply voltage (CH3, 4) Mute terminal GND CH3 PWM reverse input terminal CH3 PWM forward input terminal CH4 input terminal CH4 external CAPA connection terminal CH4 external reference voltage input terminal Operational amplifier output terminal Pre-part power supply voltage
COUT
VREFR AOUT2
AOUT1
VREFL
IREQ ACK XLAT2 REQ DATA2 CLOK2
BLOCK DIAGRAM
DOUT PCMD BCK LRCK BCKI PCMDI LRCKI
LOCK MDP C2PO WFCK XUGF GFS
DATA XLAT CLOK SENS SCOR
SSTP
SERVO Block CPU Interface LPF Timer0 DAC CPU Interface Registers PCM Interface SRC DMP APB_ARB I-Cache APB Interface DMACA Bass Boost Block Selector ARC CORE Timer1 LPF
MIRR DFCT FOK
MIRR DFCT FOK
SERVO Interface
Timer2
SFDR SRDR TFDR TRDR FFDR FRDR
PWM Generator
XY-Memory DMAC
SERVO DSP Digital OUT Memory CD Interface ECC
TEI FEI
A/D Converter
TEO E F Memory Magic Gate Digital CLV D/A Interface Error Corrector CDDSP EFM Demodulator RF amp Block Digital PLL Sub Code Processor Asymmetry Corrector Clock Generator 32K RAM
TE
Servo Auto Sequencer
CD Signal Processor Block
FEO
Memory Control System
FE
SRAM Sequencer
SUM CPU + DSP CODEC (ATRAC3, ATRAC-X, MP3) Clock Generator PLL1/PLL2 ROM/RAM
A B C D
IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS-2
VC EQ AMP
VC
APC
ATT
RFC
XTAI
VCTL
XPCK PCO FILI FIFO CLTV
XTAO
VPCO
ASYO ASYI BIAS RFACI
EQ_IN
XRST TEST1 TRST
XTACN
RFACO
Q2003 : CXD3014R (CD Digital Signal Processor with Built-in RF Amplifier and Digital Servo + Digital High & Bass Boost + CODEC) -1/4
LD PDSENS PD
AC_SUM RFDCO
DX-7555
DX-7555 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS-3
Q2003 : CXD3014R (CD Digital Signal Processor with Built-in RF Amplifier and Digital Servo + Digital High & Bass Boost + CODEC) -2/4
TERMINAL DESCRIPTION
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 Pin name LRCK LRCKI PCMD PCMDI BCK BCKI XTACN XRST DVSS3 IREQ CLOK DATA2 XLAT2 REQ ACK XLAT DVDD3 DVSS8 DVDD8 SENS WFCK XUGF XPCK GFS C2PO SCOR DVDD4 COUT DVSS9 DVDD9 MIRR DFCT FOK DVSS4 DVDD5 DVSS5 LOCK MDP SSTP IOVSS1 SFDR SRDR I/O O I O I O I I I --O I I/O I I O I ------O O O O O O O --I/O ----I/O I/O I/O ------I/O O I --O O Description LR clock output. LR clock input. PCMD data output. PCMD data input. BCK data output. BCK data input. Oscillation circuit control. Self-oscillation when high, oscillation stop when low. System reset. Reset when low. Internal digital GND. ARC Interrupt to microprocessor. CPU I/F ARC(CLK) CPU I/F ARC(DATA) Codec latch signal. CPU I/F ARC (REQ). CPU I/F ARC (ACK). CDDSP control latch signal. Internal digital power supply. Internal digital GND. Internal digital power supply. SENS output to CPU. WFCK output. XUGF output. Output MNT0, RFCK, SOUT by command switch. XPCK output. Output MNT1, SOCK by command switch. GFS output. Output MNT2, XROF, XOLT by command switch. C2PO output. Output MNT3, GTOP by command switch. High output when the subcode sync, S0 or S1, is detected. Digital power supply. Track number count signal input/output. Internal digital GND. Internal digital power supply. Mirror signal input/output. Defect signal input/output. Focus OK signal input/output. Internal digital GND. Internal digital power supply. Internal digital GND. GFS is sampled at 460Hz; when GFS is high, this pin outputs a high signal. If GFS is low eight consecutive samples, this pin outputs low. Or input when LKIN = "1". Spindle motor servo control output. Disc innermost detection signal input. I/O digital GND. Sled drive output. Sled drive output.
DX-7555 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS-4
Q2003 : CXD3014R (CD Digital Signal Processor with Built-in RF Amplifier and Digital Servo + Digital High & Bass Boost + CODEC) -3/4
TERMINAL DESCRIPTION (Continued)
Pin No. 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 Pin name TFDR TRDR FFDR FRDR IOVDD1 AVD1 AVS1 E F TEI TEO FEI FEO VC A B C D AVD2 RFDCO PDSENS AC_SUM EQ_IN LD PD RFC AVS2 RFACO RFACI AVD3 BIAS ASYI ASYO VPCO VCTL AVS3 CLTV FILO FILI PCO DVSS6 DVDD6 SRAMSTB DVDD1 DVSS1 I/O O O O O ------I I I O I O I/O I I I I --I/O I O I O I I --O I --I I O O I --I O I O ----I ----Description Tracking drive output. Tracking drive output. Focus drive output. Focus drive output. I/O digital power supply. Analog power supply. Analog GND. E signal input. F signal input. Tracking error signal input to DSSP block or F input. Tracking error signal output from RF amplifier block. Focus error signal input to DSSP block or A input. Focus error signal output form RF amplifier block. Center voltage output from RF amplifier block. Center voltage input to DSSP block by command switch. A signal input. B signal input. C signal input. D signal input. Analog power supply. RFDC signal output. RFDC signal input to DSSP block by command switch. Reference voltage pin for PD. RFAC summing amplifier output. Equalizer circuit input. APC amplifier output. APC amplifier input. Equalizer cut-off frequency adjustment pin. Analog GND. RFAC signal output. RFAC signal input or EFM signal input. Analog power supply. Asymmetry circuit constant current input. Asymmetry comparator voltage input. EFM full-swing output. (Low = VSS, High = VDD) Wide-band EFM PLL charge pump output. Wide-band EFM PLL VCO2 control voltage input. Analog GND. Multiplier VCO1 control voltage input. Master PLL (slave = digital PLL) filter output. Master PLL filter input. Master PLL charge pump output. Internal digital GND. Internal digital power supply. Normally low. Internal digital power supply. Internal digital GND.
DX-7555 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS-5
Q2003 : CXD3014R (CD Digital Signal Processor with Built-in RF Amplifier and Digital Servo + Digital High & Bass Boost + CODEC) -4/4
TERMINAL DESCRIPTION (Continued)
Pin No. 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 Pin name TEST1 DATA CLOK2 DVSS7 DVDD7 TEST2 TEST3 TEST4 TEST5 TEST6 DVSS2 DVDD2 IOVDD2 DOUT TEST TES1 IOVSS2 PLLAVD PLLAVS XVSS XTAO XTAI XVDD AVD4 AOUT1 VREFL AVS4 AVS5 VREFR AOUT2 AVD5 IOVDD3 IOVSS3 I/O I I/O I ----I I O I I ------O I I --------O I ----O O ----O O ------Description Test mode set. CPU I/F ARC (DATA). CPU I/F ARC (CLK). Internal digital GND. Internal digital power supply. Test pin. Normally GND. Test pin. Normally GND. Open. Test pin. Normally GND. Test pin. Normally GND. Internal digital GND. Internal digital power supply. I/O digital power supply. Digital Out output. Test pin. Normally GND. Test pin. Normally GND. I/O digital GND. PLL cell power supply. PLL cell GND. Master clock GND. Crystal oscillation circuit output. Crystal oscillation circuit input. Master clock power supply. Analog power supply. Lch analog output. Lch reference voltage. Analog GND. Analog GND. Rch reference voltage. Rch analog output. Analog power supply. I/O digital power supply. I/O digital GND.
DX-7555 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS-6
Q4001 : WM8740 (24-BIT DAC) -1/2
BLOCK DIAGRAM
DX-7555 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS-7
Q4001 : WM8740 (24-BIT DAC) -2/2
TERMINAL DESCRIPTION
DX-7555 FL TUBE VIEW
Q8101 : HNV-13SS12T
11G 12G
GUI PBC RANDOM MEMORY DVD - AUDIO SACD V CD VIDEO OFF TRACK CHP PROGRAM TOTAL REMAIN D PRO LOGIC TITLE GROUP
A-B
PROGRESSIVE MP3
Hp Hp
Col
Col
13G
10G
9G
8G
7G a j f g h
6G
5G
4G
3G
2G
1G
k m n r p d (1G-10G)
1G P1 P2 P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 P15 a h l k b f m g c e r p n d 2G a h j k b f m g c e r p n d 3G a h j k b f m g c e e p n d col 4G a h j k b f m g c e r p n d 5G a h j k b f m g c e r p n d col 6G a h j k b f m g c e r p n d Hp 7G a h j k b f m g c e r p n d 8G a h j k b f m g c e r p n d
b
e
c
9G a h j k b f m g c e r p n d Hp
10G a h j k b f m g c e r p n d
11G
12G
13G
GROUP REMAIN TITLE TOTAL
PRO LOGIC
D
CD V SACD -AUDIO PROGRAM DVD
MEMORY
VIDEO OFF RANDOM PROGRESSIVE
TRACK CHP GUI -B A
PBC
MP3
DX-7555 ADJUSTMENT PROCEDURE
ADJUSTMENT OF MASTER CLOCK FREQUENCY
[When] 1. Exchange super precision clock PC board ass'y (NADG-8725). 2. Exchange IC X001 (Crystal), IC Q9005 (MPC29M33HF), and IC Q8005 (Main microprocessor). [Procedure] 1. Connect the frequency counter to the test point P703 on main circuit PC board (NAAR-8645). 2. Press the POWER button to turn on the unit. 3. Wait for 3 minutes. (Heat running) 4. Press and hold down the STOP [ ] button, then press the FF (fast forward) [ ] button. All segments light up. 5. Press the STOP [ ] button, after "NO KEY" is displayed. 6. Press and hold down the PLAY [ ] button, then press the DISPLAY button.
FL display
( + 00 ) 7. Operate the UP/DOWN (JOG) dial so that the reading of frequency counter becomes 16.934400 MHz +1 / -1 Hz.
UP dial (JOG)
FL display
( + 00 )
--->
( + 10 ) Ex. ( - 10 ) Ex.
--->
DOWN dial (JOG)
8. Press and hold down the DISPLAY button, then press the PUSH TO ENTER (JOG) button.
FL display
UPDATING..
--->
UPDATE OK
9. Press the PUSH TO ENTER (JOG) button, after "NO DISC" is displayed. 10. Press the POWER button to turn off the unit. 11. Disconnect the frequency counter.
--- Top view --Main circuit PC board (NAAR-8645)
Frequency counter
GND
"16.934400 MHz +1 / -1 Hz"
Test point P703
DX-7555 PACKING PROCEDURE
A804 1m
A806
A809
A805 80 cm
A807
A810
A801 A802 x 2 pcs. A808 A803
A606 A606 A606 A600 (L & R) A602 (INNER) A800 A606
R
Front side
A604 (OUTER)
Right side marking A606
L
A600 (L & R) Left side marking A608
A601
Front side
D X -7 5 55 ( )
DX C-
-75
55 ( )
DX
75
55
( )
77
7(S
)
C-
77
) 7(S
A607 A608
DX-7555
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