Sony CDX-616 Operating manual

SERVICE MANUAL
CDX-616
SUPPLEMENT-2
File this supplement with the service manual.
AEP Model
UK Model
Subject: Mechanism Deck Modification (MG-250D-137)
(ECN-CSA00840)
The mechanism deck was changed from MG-250C-137 to MG-250D-137.
At the same time, MAIN and JACK boards were been changed.
This supplement contains only a new type mechanism deck and boards.
TABLE OF CONTENTS
1. NEW/FORMER DISCRIMINATION.................... 2
2. DISASSEMBLY ......................................................... 3
3. DIAGRAMS
3-1. Note for Printed Wiring Boards
and Schematic Diagrams ................................................ 5
3-2. Printed Wiring Boards – RF/SW Boards –.................... 6
3-3. Schematic Diagram – RF/SW Boards – ........................ 7
3-4. Printed Wiring Boards
–MAIN Board (Component Side) – ............................... 8
3-5. Printed Wiring Board
–MAIN Board (Conductor Side) – ................................. 9
3-6. Schematic Diagram – MAIN Board (1/2) – .................. 10
3-7. Schematic Diagram – MAIN Board (2/2) – .................. 11
3-8. Printed Wiring Boards – JACK Board –........................ 12
3-9. Schematic Diagram – JACK Board – ............................ 12
4. EXPLODED VIEWS................................................ 13
5. ELECTRICAL PARTS LIST ............................... 18

2
1. NEW/FORMER DISCRIMINATION
7Y187A
C: MG-250C-137 (Former type)
D: MG-250D-137 (New type)

3
Note: Follow the disassembly procedure in the numerical order given.
2. DISASSEMBLY
MECHANISM DECK (MG-250D-137)
2 tension spring (FL)
2 tension spring (FL)
1 two dampers (250)
1 two dampers (250)
3 jack flexible board
(CNJ901)
4 mechanism deck (MG-250D-137)
firament tape
MAIN BOARD
1 main flexible board
(CNJ12)
6 three screws (FP)
7 main board
2 Break the soldering
of motor (M104) lead.
3 screw
(PTT2
× 4)
4 heat sink
5 two precision screws
(P1.7
× 2.5)

4
RF BOARD
4
3
two screws
(PTT2 × 4)
5 connector
(CNP53)
7 RF board
3 two screws
(PS2 × 4)
1 OP flexible board
(CNJ11)
2 Break the soldering
of motor (M102) lead.
6 Break the soldering of lead.
CHUCKING MOTOR ASS’Y (M103)
1 Break the soldering
of motor (M103) lead.
2 two screws (PTT2 × 4)
4 chucking motor ass’y
(M103)
3 retainer (CHM)

55
3. DIAGRAMS
3-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
•X: parts extracted from the component side.
•Y: parts extracted from the conductor side.
•z: Through hole.
•b: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face sideseenfrom
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ωand 1/4W or less unless otherwise
specified.
•f: internal component.
•C: panel designation.
•U: B+ Line.
•H: adjustment for repair.
• Powervoltageisdc14.4Vandfedwithregulateddcpower
supply from CD changer controller.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD PLAY
∗: Impossible to measure
• Voltages are taken with aVOM(Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J: CD PLAY
Note: The components identified by mark 0or dotted line
with mark 0are critical for safety.
Replace only with part number specified.

66
CDX-616
3-2. PRINTED WIRING BOARDS – RF/SW Boards –
• Semiconductor
Location
Ref. No. Location
IC11 D-7
IC51 B-9
IC52 H-4
Q11 E-8
C52
C60
C59
R62
R63
C55
R57
R58
R65
R56
C54
R61
C21
R30
R64
C31
C38
C34
R40
C26
C39
C12
C19
C18
C10
CNP53
C56
C58
C57
IC52
1-676-014-
11
(11)
RF BOARD (COMPONENT SIDE)
R51
R53
C51
R52
R54
R31
R60
R32
RV14
C22
C24
R39
C28
R37
C25
R34
C29
R41
C35
R47
R42
R43
R45
C37
R46
C36
R44
IC11
C43
C17
C16
C14
R25
R18
R26
C15 R17
R59
C53
R50
C42 C41
R55
R49
R27
C32
C30
C27
C33
R38
R36
R35
R48
R14
R11
R22
R16
C40
R28
C23
R33
R12
R13
BCE
C13
CNJ11
Q11
1-676-014-
11
(11)
RF BOARD (CONDUCTOR SIDE)
IC51
CNJ12
SW1
(LIMIT)
SW BOARD
1-664-104- 11
(11)
M101
(SPINDLE)
A
MAIN
BOARD
OPTICAL PICK-UP
BLOCK
(KSS-521A)
OP FLEXIBLE BOARD
1-664-626- 11
SW11
CHUCKING END
DETECT
SW12
SAVE END
DETECT
1234567891011
A
B
C
D
E
F
G
H
I
J
+
1
2
BLU
YEL
YEL
BLU
+
+
+
+
85
14
17
1
+
3927
40
52
1
13
14
26
1
26
14
87
1
28 22 21 15
M
MAIN FLEXIBLE BOARD
1-679-339- 11
BP12 (FE)
TP
(VC)
TP
(FE0)
BP11 (TE)
TP (TE1)
TP
(RF)
TP (GND)
05
(Page 8)

77
CDX-616
3-3. SCHEMATIC DIAGRAM – RF/SW Boards –
Note: The components identified by mark 0or dotted line
with mark 0are critical for safety.
Replace only with part number specified.
(Page 10)

88
CDX-616
R307
R308
R306
C311
C321
KA
KA
KA
KA
D315
D316
D317
D318
E
C
B
Q306 Q303
C315
R320
R321
Q308
12
R301
C305
D304
AK
D303
KA
D302
D301 D305
C304
C303
1
78
14
D311
D314
C301
C302
IC302
1
45
8
IC301
C320
R316 R312
R309
BCE
Q302
R302
BCE
Q301
C306
R303
KA
D307
KA
D308 IC304
R311
C308
C307
R304
R212
R211
113
R622
R630
R612
ECB
Q602
ECB
Q601
C621
R621 R620
C642
ECB
Q620
Q610
BCE
C611
R611
R610
C608
C603
C606
AK
D601
AK
D602
R318
C602R601
FB601
R602
1
12 13
24
IC601
C106
R110
R115
R117
R116
R108
R109
C107
R107
C105
R106
C104
C109
C103
R105
R104
R102
C102
R103
R101
C101
C112
C108
C206
R111C113C114
1
30
31
50
51
80
100
C115
R314
1
24
25
40
41
64
8065
R206
R205
R204 R203
R202
Q201
C501 C503
IC503
C504
R504
C502
R502
R501
X501
1
20
21 40
41
60
80
1
14
15
28
IC502 IC501
R207
C202
R213
R219
R505
D306
KA
D501
C201
C205
C203
R220
KA
D320
61
MAIN BOARD
(COMPONENT SIDE)
M
M104
(ELEVATOR)
B
JACK
BOARD
CNJ901
05
1-674-306-
12
(12)
1 2 3 4 5 6 7 8 9 10 11
A
B
C
D
E
F
G
H
I
J
C1/B2 C2
E1
B1
E2
C1/B2 C2
E1
B1
E2
BLU
RED
AKK
A
AK
K
K
A
K
A
31
2
IC101
81
K
A
A
45
13
C1/B2
C2
E1
B1
E2
IC201
BP201
(SINGLE)
1
26
A
RF BOARD
CNJ12
MAIN FLEXIBLE BOARD
1-679-339-
11
JACK FLEXIBLE BOARD
1-676-340-
11
3-4. PRINTED WIRING BOARDS – MAIN Board (Component Side) –
(Page 6)
• Semiconductor
Location
Ref. No. Location
D301 F-3
D302 F-3
D303 F-3
D304 F-3
D305 F-3
D306 F-7
D307 H-4
D308 H-4
D311 G-4
D314 G-4
D315 E-2
D316 D-2
D317 D-2
D318 D-2
D320 F-2
D501 G-7
D601 C-5
D602 C-5
IC101 C-8
IC202 E-9
IC301 H-4
IC302 F-4
IC304 H-5
IC501 H-7
IC502 H-6
IC503 H-7
IC601 B-5
Q201 F-9
Q301 I-5
Q302 I-4
Q303 E-2
Q306 E-1
Q308 F-2
Q601 E-4
Q602 E-4
Q610 D-4
Q620 D-4
(Page 12)

99
CDX-616
(CHASSIS)
(CHASSIS)
RV202
ELEVATOR
HEIGHT SENSOR
RV201
UP
DOWN
X201
X601
SW202
MAGAZINE
IN/OUT
DETECT
C601
+
C609
+
C604
+
C610
+
C630
+
C620
+
C318
+
C317
+
C310
+
C314
+
C316
+
C309
+
Q309
Q307
SW301
Z
05
MAIN BOARD
(CONDUCTOR SIDE)
1-674-306-
12
(12)
1 2 3 4 5 6 7 8 9 10 11
A
B
C
D
E
F
G
H
I
J
(CHASSIS)
SW201
MAGAZINE
DETECT
3-5. PRINTED WIRING BOARD – MAIN Board (Conductor Side) –
• Semiconductor
Location
Ref. No. Location
Q307 E-11
Q309 G-11

1010
CDX-616
3-6. SCHEMATIC DIAGRAM – MAIN Board (1/2) –
(Page 7)