Service Manuals, User Guides, Schematic Diagrams or docs for : ONKYO Audio C-701 Onkyo-C-701-A-Service-Manual
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C-701A
Ref. No. 3696
092001
SERVICE MANUAL
Compact Disc Player
MODEL C-701A
/ ON
BY
C 701A
Silver model
SMPP,SMGT 230-240V AC, 50Hz
SMDT 120V AC, 60Hz
SMGR 220-230V AC, 50/60Hz
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.
C-701A
SERVICE PROCEDURES 1
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING
This set employs a laser. Therefore, be sure to follow Laser Diode Properties
carefully the instructions below when servicing.
Material: GaAS/GaAlAs
Wavelength: 780nm
WARNING!! Laser output: max. 0.5mW*
SERVICE WARNING : DO NOT APPROACH THE Emission Duration: continuous
LASER EXIT WITH THE EYE TOO CLOSELY. *This output is the value measured at a distance about 1.8mm
IN CASE IT IS NECESSARY TO CONFIRM LASER from the objective lens surface on the Optical Pickup Block.
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 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
MPP/MGT MDT MGR
1. Replacing the fuse
2.Safety check out (Only U.S.A. model)
THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW OPERATING TYPE
After correcting the original service problem perform
FOR CONTINUED PROTECTION AGAINST FIRE the following safety check before releasing the set
HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
to the customer.
RATING REFER TO THE MARKING ADJACENT TO THE SYMBOL
Connect the insulating-resistance tester between the
plug of power supply cord and terminal GND on the
CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
E LENT. POUR UNE PROTECTION PERMANENTE,N'UTILISER
back panel.
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST Specifications: More than 10 M ohm at 500V.
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.
REF. NO. PART NO. DESCRIPTION
F901 252074 2A-SE-EAK
C-701A
SERVICE PROCEDURES 2
1. Removement of tray
1. Remove the top cover 5. Press the tray stopper to the arrow mark direction and remove
2. Turn the locked screw to the clockwise to release the lock of gear. the tray ass'y. (Refer to fig-3)
(Refer to fig-1) Fig-1 Fig-3
Bottom side
Lock Unlock
3. Pull out the tray. Front
4. Remove the stopper. (Refer to fig-2)
Fig-2
Tray Front Tray
stopper stopper
Stopper
Tray
Front LD Short
Terminal
2. Replacement of optical pick-up
The laser diode in the optical pickup block is so sensitive to static
electricity, surge current and etc. that the components are liable to
be broken down or its reliability remarkably deteriorated.
During repair, carefully take the following precautions.
1. Solder the LD short terminal on mechanism.
2. Disconnect the flexible flat cable P101.
3. Replace the optical pickup.
4. Connect the flexible flat cable P101.
5. Unsolder the LD short terminal on mechanism.
Pick up short land
NOTE
1. Ground for the work-desk. 3. Grounding for the human body.
Place a conductive sheet such as a sheet of copper Be sure to put on a wrist-strap for grounding whose
(with impedance lower than 10Mohm) on the work- other end is grounded.
desk and place the set on the conductive sheet so that Be particularly careful when the workers wear
the chassis can be grounded. synthetic fiber clothes, or air is dry.
2. Grounding for the test equipments and tools. 4. Select a soldering iron that permits no leakage and
Test equipments and toolings should be grounded in have the tip of the iron well-grounded.
order that their ground level is the same the ground of 5. Do not check the laser diode terminals with the
the power source. probe of a circuit tester or oscilloscope.
C-701A
SPECIFICATIONS
Signal readout system : Optical non-contact Wow and Flutter :
Reading rotation : About 500 - 200 r.p.m. Below threshold of measurability
(constant linear velocity) Output level : 2 volts r.m.s.
Linear velocity : 1.2 - 1.4 m/s Power consumption :
Error correction system : AC 230-240 V, 50 Hz model : 8 watts
Cross Interleave Reed Solomon code AC 220-230V, 50Hz/60Hz : 8 watts
AC 120 V, 60 Hz model : 9 watts
D/A converter : 1 bit D/A converter
Power supply rating :
Sampling frequency : 352.8 kHz
AC 230-240 V, 50 Hz
(Eight-times oversampling)
AC 220-230V, 50Hz/60Hz
Number of channels : 2 (stereo) AC 120 V, 60 Hz
Frequency response : 5 Hz - 20 kHz Dimensions (W x H x D) :
Total harmonic distortion : 0.009% (at 1 kHz) 155 x 76 x 283.5 mm model
Dynamic range : 92 dB 6-1/8" x 3" x 11-3/16"
155 x 76 x 281.5 mm model
Signal to noise ratio : 80 dB
6-1/8" x 3" x 11-1/16"
Channel separation : 80 dB (at 1 kHz) 155 x 76 x 277.5 mm model
Weight : 2.0 kg, 4.4 lbs.
Specifications and external appearance are subject to
change without notice because of product improvements.
: European model only
: Taiwanese model only
: Asian model only
: Chinese model only
CONFIRM THE FL DISPLAY
1) Press the STANDBY key ON.
2) Press and hold down the STOP button, then
press the UP button.
After " 010702A" (Microprocessor version) is
displayed. All the segments of FL tube light up
after 1 seconds.
3) Press the STOP key . ("NO KEY" is displayed)
4) Confirm the each key.
5) Press the STANDBY key to release the test mode.
C-701A
EXPLODED VIEW
A9
P101 A24
A9
A9 A216 A705
U1
A210
P901 A9
U3 Z01
A216
A11 A216
A9
P701 A25
A9 A215
A27
A15 J904
A103 U5 P701 A216
only A103
A104
U2
A101 A9 U7
A23 U4
A13
A102
only
A105
F901 A5 A9
A107 A204
T901 A301
P701
A20
U6 A108 A219
only
A17 A219
A18
A203
A1
A201
A219
A221
A219
C-701A
EXPLODED VIEW PARTS LIST-1
REF. NO. PART NO. DESCRIPTION
A1 27100409 Chassis
A5 27191158A Holder, PCB
A9 838130088 Self tapping screw, 3TTB+8B
A11 27190369 Holder, PCB
A13 830440069 Self tapping screw, 4TTC+6C(BC)
A15 27300750 Bushing, S-RELIEF #2271
A17 27150476 Shield plate (PT)
A18 880048 Plastic rivet, P-3055B-8L
A20 27111246 Front bracket
A23 28141478 Cushion
A24 260208 Wire tie
A25 27255004 Clip, CS-1U
A27 29110083 Tape CROSS-16U 16 x 35mm
A101 27122925 Rear panel
27122926 Rear panel
27122927 Rear panel
27122932 Rear panel
A102 27191143 Holder Outlet
A103 838430088 Self tapping screw, 3TTB+8B(BC)
A104 838430088 Self tapping screw, 3TTB+8B(BC)
A105 29362285 Label
A107 27262674 Plate, WIN1
A108 27262675 Plate, WIN1
A201 27212346 Front panel
A203 28198939 Facet (S)
A204 27268055 Guide (Tray)
A210 28148497 Door (Tray)
A215 28184825 Cover
A216 838930088 Self tapping screw, 3TTB+8B(UN)
A219 28141489 Cushion
A221 27262671 Plate (Bottom)
A301 28191952A Clear plate
28191944A Clear plate
A705 29362982 Label (AVIS&CLASS1)
29362939 Label (WARNING)
29362991 Label
F901 252074 or Fuse, 2A-SE-EAK
252074CC
J904 2063A14070 Crimp assy
P101 2042161022 Flexible flat cable, NCFC2-161022
P701 2045351022 Flexible flat cable, NCFC5-351022
P703 2047201012 Flexible flat cable, NCFC7-201012
C-701A
EXPLODED VIEW PARTS LIST-2
REF. NO. PART NO. DESCRIPTION
P901 253335HIT or Power cord, AS-CEE
253336VOL
253332HIT or Power cord, AS-UC-2
253333VOL
253337HIT or Power cord, AS-CCEE
253338VOL
T901 2301553 Power transformer, NPT-1426P
2301552 Power transformer, NPT-1426D
2301555 Power transformer, NPT-1426G
U1 1H477523-1B Main circuit PC board assy NADG-7323-1B
1H477523-1C Main circuit PC board assy NADG-7323-1C
1H477523-1D Main circuit PC board assy NADG-7323-1D
1H477523-1E Main circuit PC board assy NADG-7323-1E
U2 1H477524-1B Microprocessor circuit PC board, NADG-7324-1B
1H477524-1C Microprocessor circuit PC board, NADG-7324-1C
1H477524-1D Microprocessor circuit PC board, NADG-7324-1D
1H477524-1E Microprocessor circuit PC board, NADG-7324-1E
U3 1H477525-1B Driver circuit PC board assy, NAAF-7325-1B
1H477525-1C Driver circuit PC board assy, NAAF-7325-1C
1H477525-1D Driver circuit PC board assy, NAAF-7325-1D
1H477525-1E Driver circuit PC board assy, NAAF-7325-1E
U4 1H477526-1B Display circuit PC board assy, NADIS-7326-1B
1H477526-1C Display circuit PC board assy, NADIS-7326-1C
1H477526-1D Display circuit PC board assy, NADIS-7326-1D
1H477526-1E Display circuit PC board assy, NADIS-7326-1E
U5 1H477527-1B Regulator circuit PC board assy, NAPS-7327-1B
1H477527-1C Regulator circuit PC board assy, NAPS-7327-1C
1H477527-1D Regulator circuit PC board assy, NAPS-7327-1D
1H477527-1E Regulator circuit PC board assy, NAPS-7327-1E
U6 1H477528-1B Power transformer PC board assy, NAPS-7328-1B
1H477528-1C Power transformer PC board assy, NAPS-7328-1C
1H477528-1D Power transformer PC board assy, NAPS-7328-1D
1H477528-1E Power transformer PC board assy, NAPS-7328-1E
U7 1H477529-1B Open/ Close switch PC board assy, NASW-7329-1B
1H477529-1C Open/ Close switch PC board assy, NASW-7329-1C
1H477529-1D Open/ Close switch PC board assy, NASW-7329-1D
1H477529-1E Open/ Close switch PC board assy, NASW-7329-1E
Z01 24800018A CD mechanism assy, NCD-170S
: European model only NOTE: THE COMPONENTS IDENTIFIED BY MARK
: Taiwanese model only ARE CRITICAL FOR RISK OF FIRE AND
: Asian model only ELECTRIC SHOCK. REPLACE ONLY WITH
: Chinese model only PART NUMBER SPECIFIED.
C-701A
CD MECHANISM EXPLODED VIEW (1)
6
7
9
6 6
5
11
6
8
10
13 16
14 17
15
16
19 16
20 12 13
28
14 14
27
15 15
26 12 16
14
21
15
29
4 18
3
2
1
25
24 22
23
PARTS LIST
Ref. No. Part No. Description Ref. No. Part No. Description
1 2646-290-01 Tray 16 2627-234-01 Insulator
2 - Stopper 17 - Drive unit
3 2625-544-01 Gear cover 18 2625-552-06 Main chassis
4 2625-535-01 Tray Gear 19 3319-501-51 PTPWH2.6x16, Screw
5 2625-546-01 Chucking plate 20 2625-547-01 Drive Gear
6 - PTPWH2.6x7, Screw 21 2625-545-04 Control cam
7 2625-537-01 Chucking yoke 22 1692-667-11 Leaf switch
8 1452-493-21 Magnet 23 1564-721-11 Socket
9 2625-541-02 Damper 24 1640-523-11 Loading PC board
10 2646-291-01 Chucking pulley 25 X2625-117-1 Loading motor
11 2646-288-01 Sub chassis 26 2625-274-02 Middle gear
12 2627-236-01 Coil spring (front) 27 2625-536-02 Loading pulley
13 2627-235-01 Coil spring (back) 28 3653-387-00 LM belt
14 2646-289-01 Washer 29 - B2.6x2.5, Screw
15 - P2.6x10, Screw
The mechanical parts with no part number
in the exploded views are not supplied.
C-701A
CD MECHANISM EXPLODED VIEW (2)
(Pickup drive unit)
61
59 62
54
55
53 60 63
64
51
56
52
58
57
PARTS LIST
Ref. No. Part No. Description
51 X2625-984-1 Motor chassis ass'y
52 X2625-769-1 Motor gear ass'y
53 2656-908-01 Sled shaft
54 2625-188-02 Gear A
55 7621-255-15 P2x3, Screw
56 1572-085-11 Leaf switch
57 1639-678-12 Motor PC board
58 1564-722-11 Socket
59 2627-003-02 Gear B
60 2625-191-01 Coil spring
61 2625-477-01 Center ring
62 2641-386-01 Special screw, 2*5
63 2625-625-01 Reinforcement board
64 8848-483-05 KSS-213C, Pickup
C-701A
BLOCK DIAGRAM Q402
OPTICAL
OUT
OP AMP OP AMP
R123 +5V_2 Q401
X301
CD MECHA FOCUS BUFFER 16.9344MHZ Q501-2/2 Q502-2/2
GAIN Q403 X'TAL NJM4565M-D NJM4565M-D
NCD-170S ADJUST OPTICAL
+5V_2
DOUT
OUT
Q501-1/2
NJM4565M-D
53
E E 39 XTAI P501
18 CLK 14 70 Q531
A B A+C 36 Q101
19 XLT 13 OP AMP MUTE LCH
B+D 37 RF SIGNAL Q301
20 DAT 12 71 XTAO
D C CXD2589Q +10V SWITCH
F 38 PROCESSOR &
F 21 XRST 79 DIGITAL SIGNAL
SERVO CONTROLLER OUTPUT
22 COUT 11 PROCESSOR 67 OUT-L
MD 35 CXA2542AQ -10V Q532
23 10 W/DA CONVERTER
OP AMP MUTE RCH
Q111 24 SENS10 74
LD 34 SWITCH
LASER D. OUT-R
SWITCH
18
35
21
57
15
Q502-1/2
9
8
7
6
5
4
15
12
31
25
5
FOK NJM4565M-D
EFM +5V_1
+5V-2
MDP
SLD
FC
+5V_2 MDP
TR
+5V-1 Q761/Q762
3 26 23 6
STANDBY
15 MUTE
FOCUS
SLED/SPINDLE/LOADING MOTOR
16 DRIVE
LED
COIL
D751
17 P402
TRACKING +5V_1
COIL 18
STAND-BY
FOCUS/TRACKING COIL
IND. SW
BA5984FP
SSTOP
Q751
SENS20
CLOCK
SENS1
RI
SQSO
SCOR
SCOR
13 XRST
SQCK
+5V_1
DATA
XLAT
SLED Q703
MOTOR M BUFFER
IN/OUT
14 ONLY
X701 Q702 Q712
12 5MHZ REMOTE
Q102
DRIVER
RI OUT
SPINDLE RESET
M RESONATOR CONTROL
AMUT
RI IN
MOTOR SENSOR
STBY
11
1 OPEN
12
37
11
10
15
16
14
46
36
34
35
17
47
13
19
18
9
9
10 28 CLOSE 43
LOADING 42
MOTOR M Q701
MICROPROCESSOR
+5V_3 53 MPD78043FGF-087-3B9
SSTOP 54 71
OPEN_SW
CLOSE_SW
SEGMENT
28
27
59
38
P1-P17
G2-G9
DIGIT
+5V_1
+5V_3 Q904
+5V T901
REGULATOR NPT-1426
AD0
Q721
FL DISPLAY 5 4
FL ON/OFF
+5V_1 Q901 P903
HNA-09SS27T
DOWN/FR
+5V
PAUSE
CLOSE
UP/FF
STOP
PLAY/
OPEN/
REGULATOR 6
F1
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