Aiwa AMHX-70 Service manual

AM-HX70

AHK

SERVICE MANUAL

MINIDISC PLAYER

• This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
AM-HX70<AHK> (S/M Code No. 09-006-435-8T1).

BASIC MD MECHANISM : AZG-F A

S/M Code No. 09-009-435-8R1

REVISION

DATA

SPECIFICATIONS

Main unit

Playback system MiniDisc digital audio system
Laser pickup Semiconductor laser
Sampling Frequency 44.1 kHz
Number of channels Stereo: 2 channels

D/A converter 1-bit
Frequency response 40 to 20,000 Hz ± 4 dB

Wow and Flutter Below measurable limit
Output Phone jack

Maximum output level 8 mW + 8 mW (16 Ω)
Power requirements DC 1.2 V using the supplied NI-MH

Battery life Using the supplied rechargeable battery

Maximum outside Approx. 71.6 (W) X 13.5 (H) X 77.7 (D) mm
dimensions (excluding projected parts and controls)
Weight Approx. 60 g excluding batteries.

Monaural: 1 channel

20 to 20,000 Hz ± 1 dB (10 kΩ)
(±0.00 1% W.PEAK)

rechargeable battery MHB-901
DC 1.5 V using an LR6 (size AA) dry
cell battery
AC house current using an optional AC adaptor

Approx. 19 hours (with power save on:
approx. 25 hours)

Using an LR6 (size AA) dry cell battery

Approx. 29 hours (with power save on:

approx. 38 hours)
Using the supplied rechargeable battery and an
LR6 (size AA) dry cell battery

Approx. 51 hours (with power save on:

approx. 67 hours)

<Battery charger RB-M02 K>
Rated voltage AC 240 V, 50 Hz

• Design and specifications are subject to change without notice.

• Dolby noise reduction manufactured under license from Dolby
Laboratories Licensing Corporation.
"DOLBY" and the double-D symbol are trademarks of Dolby
Laboratories Licensing Corporation.

– 2 –

PROTECTION OF EYES FROM LASER BEAM DURING SERVICING

This set employs laser. Therefore, be sure to follow carefully
the instructions below when servicing.

WARNING!!

WHEN SERVICING, 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 PICK-UP BLOCK.

s Caution: Invisible laser radiation when

open and interlocks defeated avoid
exposure to beam.

s Advarsel: Usynlig laserståling ved åbning,

når sikkerhedsafbrydere er ude af funktion.
Undgå udsættelse for stråling.

VAROITUS!

Laiteen Käyttäminen muulla kuin tässä käyttöohjeessa
mainitulla tavalla saataa altistaa käyt-täjän
turvallisuusluokan 1 ylittävälle näkymättömälle
lasersäteilylle.

VARNING!

Om apparaten används på annat sätt än vad som
specificeras i denna bruksanvising, kan användaren
utsättas för osynling laserstrålning, som överskrider
gränsen för laserklass 1.

CAUTION

Use of controls or adjustments or performance of procedures other
than those specified herin may result in hazardous radiation expo­sure.

ATTENTION

L’utillisation de commandes, réglages ou procédures autres que
ceux spécifiés peut entraîner une dangereuse exposition aux
radiations.

ADVARSEL

Usynlig laserståling ved åbning, når sikkerhedsafbrydereer ude af
funktion. Undgå udsættelse for stråling.

This Compact Disc player is classified as a CLASS 1 LASER
product.
The CLASS 1 LASER PRODUCT label is located on the rear
exterior.

CLASS 1 LASER PRODUCT
KLASSE 1 LASER PRODUKT
LUOKAN 1 LASER LAITE
KLASS 1 LASER APPARAT

Precaution to replace Optical block

(KMS-330A)

Body or clothes electrostatic potential could
ruin laser diode in the optical block. Be sure
ground body and workbench, and use care the
clothes do not touch the diode.

1) After the connection, remove solder shown in
right figure.

PICK-UP Assy P.C.B

Solder

– 3 –

DISASSEMBLY INSTRUCTIONS

Disassembling and Notes on Reassembling

1. Removing the bottom panel

Remove the seven screws A. Open the battery lid and remove the bottom panel.

• Assemble the parts from the side of the headphone jack while being careful of the HOLD switch and battery lid.

2. Removing the main board

1) Short the short land of the pickup by soldering.

2) Remove the three connectors.

3) Remove three screws A and screw B.

4) While being careful of the FFC of the pickup, remove the main
board.

• When assembling the parts, fasten the screws from screw B
and finally remove the short land of the pickup.

Pickup short land

– 4 –

3. Removing the Top Panel
Remove the four screws A.

• When assembling the parts, the claws of the holder should be hooked on the arm (two claws).

4. Removing the center frame
Be careful not to contact the pickup during the following procedure.

1) Remove the bottom panel and top panel.

2) Remove the battery hinge block.

3) While bending the boss block of HLDR and CTRG, remove HLDR and CTRG in order of 1 and 2.

• When assembling the parts, insert the boss of HLDR and CTRG in order of 2 and 1.

4) Remove boss A from the center frame, and remove the center frame while lifting up the mechanism in the direction of the

arrow.

3) HLDR, CTRG 4) Center frame

– 5 –

ELECTRICAL MAIN PARTS LIST

PART NO. DESCRIPTIONREF. NO. KANRI

NO.

IC

87-A20-707-010 C-IC,CXA2523AR
87-A21-608-010 C-IC,CXD2665GA
8A-HM5-601-010 C-IC,MSM66573L-047TB-9
87-A21-724-040 C-IC,S-93C56AMFN
87-A21-038-040 C-IC,NJU7014R-TE2

87-A21-575-010 C-IC,BD6606KVT
87-A21-316-080 C-IC,S-8328B24MC
87-A20-861-040 C-IC,S-80808ANNP
87-A20-982-040 C-IC,S-80822ANNP
87-A21-627-040 C-IC,XC6367B102MR

87-A21-341-040 C-IC,TA2131FL

TRANSISTOR

89-115-884-080 CHIP -TRANSISTER 2SA1588Y
87-A30-148-080 C-TR,2SC4738GR
87-026-644-080 C-TR,DTA144EE
87-A30-261-080 C-FET,FDC633N
87-A30-262-080 C-FET,FDC634P

89-332-654-080 CHIP TRANSISTOR, 2SC3265Y
87-A30-147-080 C-TR,2SA1832GR
87-A30-499-040 C-FET,2SK2009
87-A30-033-080 C-FET,2SK2035

DIODE

87-A40-124-080 C-DIODE,RB501V-40
87-A40-687-080 C-DIODE,M1FH3
87-017-850-080 C-DIODE,DAP222

MAIN C.B

C100 87-A11-751-080 C-CAP,TN 22U-4 M P
C102 87-A11-751-080 C-CAP,TN 22U-4 M P
C103 87-A11-751-080 C-CAP,TN 22U-4 M P
C104 87-A11-046-080 C-CAP,TN 100U-4 M F95 B
C106 87-A11-751-080 C-CAP,TN 22U-4 M P

C107 87-A10-766-080 C-CAP,V 0.047-10 K B
C108 87-A10-561-080 C-CAP,V 0.01U-16 K B
C109 87-A10-671-080 C-CAP,V 0.022-16 K B
C110 87-A11-058-080 C-CAP,U 0.22-10 K B
C111 87-A10-558-080 C-CAP,V 4700P-25 K B

C112 87-A11-049-080 C-CAP,U 1-6.3 K B
C113 87-A10-558-080 C-CAP,V 4700P-25 K B
C114 87-A11-049-080 C-CAP,U 1-6.3 K B
C115 87-016-448-080 C-CAP,TN 2.2-10 F95P
C116 87-A10-543-080 C-CAP,V 100P-50 J CH

C117 87-A10-561-080 C-CAP,V 0.01U-16 K B
C118 87-A10-561-080 C-CAP,V 0.01U-16 K B
C119 87-A10-671-080 C-CAP,V 0.022-16 K B
C120 87-A10-559-080 C-CAP,V 6800P-25 K B
C121 87-A10-766-080 C-CAP,V 0.047-10 K B

C122 87-A10-561-080 C-CAP,V 0.01U-16 K B
C123 87-A10-561-080 C-CAP,V 0.01U-16 K B
C124 87-A10-554-080 C-CAP,V 1000P-50 K B
C125 87-A10-554-080 C-CAP,V 1000P-50 K B
C126 87-A10-554-080 C-CAP,V 1000P-50 K B

C127 87-A10-554-080 C-CAP,V 1000P-50 K B
C128 87-A10-554-080 C-CAP,V 1000P-50 K B
C129 87-A10-554-080 C-CAP,V 1000P-50 K B
C200 87-A11-751-080 C-CAP,TN 22U-4 M P
C201 87-A10-770-080 C-CAP,V 0.1-10 K B

C202 87-A10-770-080 C-CAP,V 0.1-10 K B
C204 87-A10-902-080 C-CAP,U 0.47-10 K B
C205 87-A10-770-080 C-CAP,V 0.1-10 K B
C206 87-A10-550-080 C-CAP,V 470P-50 K B
C207 87-A10-902-080 C-CAP,U 0.47-10 K B

C208 87-A10-561-080 C-CAP,V 0.01U-16 K B

DESCRIPTIONREF. NO. KANRI

PART NO.

NO.

C209 87-A10-533-080 C-CAP,V 15P-50 J CH
C210 87-A10-533-080 C-CAP,V 15P-50 J CH
C216 87-A10-765-080 C-CAP,V 0.033-10 K B
C217 87-A11-751-080 C-CAP,TN 22U-4 M P
C219 87-A11-049-080 C-CAP,U 1-6.3 K B

C220 87-A11-049-080 C-CAP,U 1-6.3 K B
C301 87-A11-049-080 C-CAP,U 1-6.3 K B
C302 87-A10-561-080 C-CAP,V 0.01U-16 K B
C303 87-A10-561-080 C-CAP,V 0.01U-16 K B
C304 87-A10-561-080 C-CAP,V 0.01U-16 K B

C305 87-A10-770-080 C-CAP,V 0.1-10 K B
C306 87-A10-770-080 C-CAP,V 0.1-10 K B
C308 87-010-787-080 CAP, U 0.022-25
C400 87-A10-556-080 C-CAP,V 2200P-50 K B
C401 87-A10-770-080 C-CAP,V 0.1-10 K B

C402 87-A10-770-080 C-CAP,V 0.1-10 K B
C403 87-A11-046-080 C-CAP,TN 100U-4 M F95 B
C404 87-A10-591-080 C-CAP,TN 47-6.3 M F95-BCASE
C405 87-A11-049-080 C-CAP,U 1-6.3 K B
C406 87-A11-049-080 C-CAP,U 1-6.3 K B

C407 87-A10-902-080 C-CAP,U 0.47-10 K B
C408 87-A10-765-080 C-CAP,V 0.033-10 K B
C409 87-A10-765-080 C-CAP,V 0.033-10 K B
C410 87-A10-556-080 C-CAP,V 2200P-50 K B
C411 87-A10-556-080 C-CAP,V 2200P-50 K B

C412 87-A10-556-080 C-CAP,V 2200P-50 K B
C413 87-A10-556-080 C-CAP,V 2200P-50 K B
C414 87-A10-556-080 C-CAP,V 2200P-50 K B
C415 87-A10-770-080 C-CAP,V 0.1-10 K B
C416 87-A11-751-080 C-CAP,TN 22U-4 M P

C417 87-A11-807-080 C-CAP,TN 4.7U-6.3 M P
C418 87-A11-058-080 C-CAP,U 0.22-10 K B
C419 87-A11-058-080 C-CAP,U 0.22-10 K B
C420 87-A11-058-080 C-CAP,U 0.22-10 K B
C600 87-A11-806-080 C-CAP,TN 47U-6.3 M PSLB

C601 87-A10-557-080 C-CAP,V 3300P-25 K B
C602 87-A11-806-080 C-CAP,TN 47U-6.3 M PSLB
C603 87-A10-770-080 C-CAP,V 0.1-10 K B
C604 87-A10-770-080 C-CAP,V 0.1-10 K B
C605 87-A10-554-080 C-CAP,V 1000P-50 K B

C606 87-A11-807-080 C-CAP,TN 4.7U-6.3 M P
C607 87-A11-049-080 C-CAP,U 1-6.3 K B
C608 87-A10-547-080 C-CAP,V 220P-25 J CH
C609 87-A10-537-080 C-CAP,V 33P-50 J CH
C610 87-A11-751-080 C-CAP,TN 22U-4 M P

C611 87-A11-049-080 C-CAP,U 1-6.3 K B
C614 87-012-286-080 C-CAP,U 0.01-25 KB
C701 87-A10-770-080 C-CAP,V 0.1-10 KB
C702 87-A10-543-080 C-CAP,V 100P-50 J CH
C703 87-A10-543-080 C-CAP,V 100P-50 J CH

C704 87-A10-543-080 C-CAP,V 100P-50 J CH
C705 87-A10-543-080 C-CAP,V 100P-50 J CH
C706 87-A11-049-080 C-CAP,U 1-6.3 K B
C707 87-016-449-080 C-CAP,TN 10-4 F95 P
C708 87-016-449-080 C-CAP,TN 10-4 F95 P

C709 87-A11-058-080 C-CAP,U 0.22-10 K B
C710 87-A11-058-080 C-CAP,U 0.22-10 K B
C711 87-A11-049-080 C-CAP,U 1-6.3 K B
C712 87-A11-049-080 C-CAP,U 1-6.3 K B
C713 87-A11-751-080 C-CAP,TN 22U-4 M P

C715 87-A11-318-080 C-CAP,TN 220U-2.5 SVB2
C716 87-A11-318-080 C-CAP,TN 220U-2.5 SVB2
C717 87-A11-061-080 C-CAP,S 2.2-10 K B
C720 87-A11-058-080 C-CAP,U 0.22-10 KB
CN100 87-A61-315-080 C-CONN,20P H XF2L-2035

CN401 87-A61-316-080 C-CONN,8P H XF2L-0835
CN700 87-A61-317-080 C-CONN,8P H XF2L-0825
D300 87-A40-556-080 C-LED,CL-270HR RED
L100 87-005-910-080 C-COIL,S 22UH M LK2125
L102 87-A50-359-080 C-COIL, 22UH K NLFC252018

– 6 –

PART NO.

L200 87-A50-646-080 C-COIL, 22UH K NLFC201614
L400 87-A50-011-080 C-COIL,47UH LQH3C
L401 87-A50-537-080 C-COIL, 100UH C4-K3L
L402 87-A50-475-080 C-COIL, 10UH K NLFC201614
L403 87-A50-475-080 C-COIL, 10UH K NLFC201614

L404 87-A50-475-080 C-COIL, 10UH K NLFC201614
L405 87-A50-475-080 C-COIL, 10UH K NLFC201614
L406 87-005-910-080 C-COIL,S 22UH M LK2125
L600 87-A50-325-080 C-COIL,180UH C4-K3L
L601 87-A50-012-080 C-COIL,100UH LQH3C

L701 87-005-769-080 C-COIL,S 100UH K

!

PR600 87-A91-769-080 C-PROTECTOR,0.75A ERY32SB075

!

PR601 87-A91-769-080 C-PROTECTOR,0.75A ERY32SB075
R204 87-A91-879-080 C-F-BEAD, BK1608TS102
R211 87-A91-880-080 C-F-BEAD, BLM10A601SG

R314 87-A00-759-080 C-RES,V 27K-1/16W F
R315 87-A00-756-080 C-RES,V 10K-1/16W F
R320 87-A00-755-080 C-RES,V 6.8K-1/16W F
R321 87-A00-757-080 C-RES,V 12K-1/16W F
R322 87-A00-758-080 C-RES,V 22K-1/16W F

R323 87-A00-760-080 C-RES,V 68K-1/16W F
R618 87-A00-761-080 C-RES,V 510K-1/16W F
R619 87-A00-762-080 C-RES,V 680K-1/16W F
R701 87-A91-879-080 C-F-BEAD, BK1608TS102
R702 87-A91-879-080 C-F-BEAD, BK1608TS102

NO.

DESCRIPTIONREF. NO. KANRI

PART NO.

NO.

R717 87-A91-878-080 C-F-BEAD, BK1608HS241
R718 87-A91-878-080 C-F-BEAD, BK1608HS241
R719 87-A91-878-080 C-F-BEAD, BK1608HS241
S300 87-A91-436-080 C-SW,PUSH 2-1-1 SPVE3.8
S301 87-A90-703-080 C-SW,SL 1-1-3 SSSS813-B-2B

S302 87-A90-232-080 C-SW,TACT SKQRAA
S303 87-A90-232-080 C-SW,TACT SKQRAA
S304 87-A90-232-080 C-SW,TACT SKQRAA
S305 87-A90-232-080 C-SW,TACT SKQRAA
S306 87-A90-232-080 C-SW,TACT SKQRAA

X200 87-A70-276-080 C-VIB,CER 22.57MHZ CSACW2257MX
X301 87-A70-277-080 C-VIB,CER 6.0MHZ CSTRC0600MG05

FLEX JACK C.B

8A-HM5-602-010 PWB,FLEX JACK
J700 87-A60-682-010 JACK,3.5 ST 7P

DESCRIPTIONREF. NO. KANRI

CHIP RESISTOR PART CODE

Chip Resistor Part Coding

88

A

Resistor Code

Chip resistor

Wattage Type Tolerance
1/16W 1005 5% CJ

1/16W
1/10W

1/8W

1608
2125

3216

5%
5%

5%

Symbol

CJ
CJ

CJ

Figure

Value of resistor

Form

L

Dimensions (mm)

t

W

0.55

Resistor Code

108
118

128

LW t

1.0 0.5 0.35 104

1.6 0.8 0.45
2 1.25 0.45

3.2

1.6

: A
: A

– 7 –

TRANSISTOR ILLUSTRATION

D

D

D

S

C

G

S

2SK2009
2SK2035

D

D

FDC633N
FDC634P

G

B

E

2SA1588
2SA1832
2SC3265
2SC4738
DTA144EE

– 8 –

WIRING – 1 (MAIN) <1 / 2>

19202122232425

18

17 16

15 14 13 12 11 10 9 8 7 6

A

B

C

D

E

F

G

H

I

J

K

※ TERMINAL DETAIL FIGURE

1234567891011121314151617

A
B

5 4 140 136 134 131 128 125 122 119 115 113 108 106 107

C
D

7 6 1 103 104 105
8 10 11 100 102 101

E
F

9 13 12 97 98 99

14 16 15 96 95 94

G

17 19 18 92 91 93

H

20 88 89 90

J

21 24 25 85 86 87

K
L

22 23 26 82 83 84

M

29 27 28 78 80 81

N

30 32 76 77 79
33 34 36 73 74 75

P

143 147 144 37 46 47 50 53 56 59 64 68 146 72 145

R
T
U

3 142 139 137 133 130 126 124 121 118 116 112 110
2 141 138 135 132 129 127 123 120 117 114 111 109

IC200

CXD2665GA TOP VIEW

31

35

38 40 42 45 48 51 55 57 60 63 66 67 70
39 41 43 44 49 52 54 58 61 62 65 69 71

L

M

N

O

P

Q

R

S

T

– 9 –

U

WIRING – 1 (MAIN) <2 / 2>

A

B

C

D

E

F

G

H

151413121110987654321

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

I

J

K

L

M

N

O

P

Q

R

S

T

U

– 10 –

SCHEMATIC DIAGRAM (MAIN / FLEX JACK)

– 11 –