Sony MP3 Player Accessories AC DN2B User Manual

AC ADAPTOR  
AC-DN2B  
MAINTENANCE MANUAL  
1st Edition  
Serial No. 10001 and Higher  
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Table of Contents  
Manual Structure  
Purpose of this manual ........................................................................................ 3 (E)  
Related manual .................................................................................................... 3 (E)  
Contents ............................................................................................................... 3 (E)  
1. Service Overview  
1-1. Connectors and Cable ...........................................................................1-1 (E)  
1-1-1. Recommended DC OUT Cable............................................1-1 (E)  
1-1-2. Recommended Power Cords ................................................1-1 (E)  
1-1-3. Connector Input/Output Signals...........................................1-2 (E)  
1-2. Operating Environment .........................................................................1-2 (E)  
1-3. Checking the Fan Operation..................................................................1-2 (E)  
1-4. Removing the Cabinets .........................................................................1-3 (E)  
1-5. Replacing the Fuse ................................................................................1-4 (E)  
1-6. Replacing the Fan..................................................................................1-4 (E)  
1-7. Notes on Repair Parts ............................................................................1-5 (E)  
1-8. Printing of the Reference Numbers on Printed Boards .........................1-5 (E)  
1-9. Optional Fixture ....................................................................................1-5 (E)  
2. Electrical Alignment  
2-1. Preparations ...........................................................................................2-1 (E)  
2-2. Output Voltage Adjustment ..................................................................2-1 (E)  
2-3. Note after Adjustment ...........................................................................2-1 (E)  
3. Spare Parts  
3-1. Exploded Views .......................................................................................... 3-1  
3-2. Electrical Parts List ..................................................................................... 3-3  
3-3. Supplied Accessory ..................................................................................... 3-4  
3-4. Optional Fixture .......................................................................................... 3-4  
AC-DN2B  
1 (E)  
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4. Diagrams and Board Layouts  
Overall ....................................................................................................................4-1  
MAIN ..................................................................................................................... 4-2  
SUB01 ....................................................................................................................4-3  
SUB02 ....................................................................................................................4-3  
Frame ...................................................................................................................... 4-4  
AC-DN2B  
2 (E)  
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Manual Structure  
Purpose of this manual  
This manual is the maintenance manual for AC Adaptor AC-DN2B.  
This manual describes the information items on maintenance, and items that premise  
the service based on the components parts such as alignment, schematic diagram,  
board layout and spare parts list, assuming use of service engineers.  
Related manual  
Besides this maintenance manual, the following manual is available for this unit.  
. Operation Manual (Supplied with this unit)  
This manual is necessary for application and operation of this unit.  
Part number : 3-204-884-0X  
Contents  
The following are summaries of the each section for understanding the manual.  
Section 1 Service Overview  
Describes information about connector input/output signals, recommended power  
cords, and replacement of part.  
Section 2 Electrical Alignment  
Describes electrical adjustment.  
Section 3 Spare Parts  
Describes parts list, exploded view, and supplied accessories used in the unit.  
Section 4 Diagrams and Board Layouts  
Describes block diagram, schematic diagram and board layouts.  
AC-DN2B  
3 (E)  
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Section 1  
Service Overview  
1-1. Connectors and Cable  
1-1-2. Recommended Power Cords  
1-1-1. Recommended DC OUT Cable  
The following power cords are available separately for this  
unit. See the following table to determine the proper  
power code for your location.  
When connecting a cable to the DC OUT connector (XLR,  
4P), be sure to use the specified connector/complete cable  
assemblies.  
SONY POWER CORD (2.4 m) DK-2401L (Angle type)  
Fig.  
Power cord  
Rated current  
Rated voltage  
Connection Connector  
. XLR 4P, MALE : 1-508-369-11  
1
2
3
4
5
6
DK-2401L (UC)  
7 A  
125 V  
P/N 1-557-377-11 10 A  
P/N 1-782-167-11 7 A  
P/N 1-782-165-11 10 A  
P/N 1-782-168-11 10 A  
P/N 1-782-164-11  
Connection Cable  
250 V  
250 V  
. CORD WITH CONNECTOR : 1-790-446-11  
(0.26 m, supplied with the unit)  
. CCDD-X2 (2 m, option)  
1
2
3
4
5
6
AC-DN2B  
1-1 (E)  
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1-1. Connectors and Cable  
1-2. Operating Environment  
1-3. Checking the Fan Operation  
1-1-3. Connector Input/Output Signals  
1-2. Operating Environment  
AC IN  
Operating Temperature : 0 dC to +40 dC  
AC 100 V to 240 V, 200 W  
Storage Temperature : _5 dC to +45 dC  
Humidity :  
No condensation  
DC OUT (4P FEMALE)  
1-3. Checking the Fan Operation  
4
1
3
The unit is provided with a fan. It is designed to run  
automatically when temperature of the heat sink inside the  
equipment exceeds over 55dC. If there is any doubt that the  
fan or fan motor control circuit fails, check the fan opera-  
tion as follows.  
2
_ EXT VIEW _  
Specifications  
Pin No.  
Signal  
1
2
3
4
GND  
NC  
GND for UNREG  
No connection  
Equipment Required  
. Electric Load  
Hewlett-Packard  
NC  
No connection  
HP6051A + HP60501B  
DC OUT  
+16.4 to +17.0 V, 9 A MAX  
1. Set the electric load to 9 A in the CC (constant current)  
mode.  
2. Connect the electric load as follows and make sure that  
the fan starts up within ten minutes.  
DC OUT (5P FEMALE)  
1
2
3
4
5
_ EXT VIEW _  
<Connection for 5P terminal>  
To  
Pin No.  
Signal  
Specifications  
Lower cover  
Electric Load  
1
2
3
4
5
GND  
NC  
GND for DC OUT  
No connection  
(+)  
(_)  
NC  
NC  
DC OUT  
+16.4 to +17.0 V, 9 A MAX  
DC OUT (3P)  
1
2
3
_ EXT VIEW _  
Pin No.  
Signal  
Specifications  
1
2
3
BATT (_) OUT  
BATT (+) OUT  
RID IN  
GND for DC OUT  
+16.5 to +16.9 V, 2.2 A MAX  
SENS  
AC-DN2B  
1-2 (E)  
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1-4. Removing the Cabinets  
1-4. Removing the Cabinets  
4. Remove the screw securing the earth wire and discon-  
nect the harnesses from the connector (CN1) on the  
main board.  
1. Remove the four screws (B3 x 6) securing the BKW-  
L601 and loosen the two screws (PSW3 x 8).  
5. Disconnect the harness from the connectors (CN252,  
CN253) on the SUB02 board.  
B3 x 6  
B3 x 6  
BKW-L601  
SUB 02 board  
SMP  
4 x 8  
CN253  
CN252  
PSW3 x 8  
CN1  
Earth wire  
Main board  
6. Assemble the parts in reverse order of the disassem-  
bling procedure.  
2. Remove the four screws (PSW3 x 8) and remove the  
upper case.  
3. Remove the two screws (B3 x 6) securing the shield plate.  
PSW3 x 8  
PSW3 x 8  
Upper case  
Shield plate  
B3 x 6  
AC-DN2B  
1-3 (E)  
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1-5. Replacing the Fuse  
1-6. Replacing the Fan  
1-5. Replacing the Fuse  
1-6. Replacing the Fan  
w
The fuse is critical to safe operation. For replacement, be  
Fan used in the unit is a periodic replacement part. For  
replacement, be sure to use the specified part.  
sure to use the specified part.  
Sony P/N : 1-763-098-11  
Recommended Replacement Period : Every five years  
Sony P/N : ! 9-885-009-46  
5 A 250 V  
1. Remove the cabinets while referring to Section 1-4.  
2. Remove the three spacer 1s and the one spacer 2.  
1. Remove the cabinets while referring to Section 1-4.  
2. Pull the fan socket out of the upper case.  
Spacer 1  
Spacer 1  
Spacer 2  
Upper case  
Spacer 1  
Fan socket  
3. Raise the switching regulator and remove the two sol-  
derings as shown in the figure. Then, replace the fuse.  
Switching  
regulator  
Fuse  
Remove the  
solderings.  
4. Assemble the unit in the reverse order of removal.  
Spacer 1/Spacer 2 tightening torque : 4 N.m (40 kgf.cm)  
AC-DN2B  
1-4 (E)  
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1-6. Replacing the Fan  
1-7. Notes on Repair Parts  
1-8. Printing of the Reference Numbers on Printed Boards  
1-9. Optional Fixture  
3. Remove the two screws and remove the fan.  
1-7. Notes on Repair Parts  
PTP3 x 8  
1. Safety Related Components Warning  
w
Components marked ! are critical to safe operation.  
Therefore, specified parts should be used in the case of  
replacement.  
2. Standardization of Parts  
Some repair parts supplied by Sony differ from those  
used for the unit. These are because of parts common-  
ality and improvement.  
Parts list has the present standardized repair parts.  
3. Stock of Parts  
Parts marked with “o” at SP (Supply Code) column of  
the spare parts list may not be stocked. Therefore, the  
delivery date will be delayed.  
4. Install a new fan in the reverse order of removal.  
4. Harness  
Harnesses with no part number are not registered as  
spare parts.  
Note at installation  
Install the fan to the fan socket with care so that air flows  
in the direction of the arrow.  
In need of repair, get components shown in the list and  
repair using them.  
1-8. Printing of the Reference Numbers  
on Printed Boards  
PTP3 x 8  
Only the lower two digits of the reference numbers of the  
SUB01 board and SUB02 board are shown respectively on  
the printed board. Note that these indications differ from  
those on the schematic diagram, block diagram and  
electrical parts list.  
(example)  
Board  
Indication on the  
printed board  
Ref.No.  
in the manual  
Air flows  
SUB01  
SUB02  
CN01  
VR51  
CN101  
VR251  
1-9. Optional Fixture  
The following special driver is separately available as a  
fixture to remove the screws securing the V shoe to the  
unit.  
Description  
Sony Part No.  
5-wing screwdriver DF-018 (for M3)  
J-6530-180-A  
AC-DN2B  
1-5 (E)  
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Section 2  
Electrical Alignment  
2-1. Preparations  
2-2. Output Voltage Adjustment  
Equipment Required  
. Electric Load  
Preparation  
. Set the electric load to 9 A in the CC (constant current)  
Hewlett-Packard  
. DC Voltmeter  
HP6051A + HP60501B  
mode.  
Test Points :  
Adj. Point :  
Pins (+), (_)/5P terminal  
1VR251 (SUB02 board)  
Connection  
Specifications : 16.7 0.3 V  
<Connection for 5P terminal>  
To  
Lower cover  
Electric Load  
(+)  
(_)  
To  
VR251  
1
DC Voltmeter  
SUB02 board (B side)  
2-3. Note after Adjustment  
After adjustment has been completed, be sure to lock  
1VR251 with paint.  
AC-DN2B  
2-1 (E)  
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AC Adaptor  
Section 3  
Spare Parts  
3-1. Exploded Views  
B3 x 6  
SMP  
4 x 8  
B3 x 6  
a
b
c
*2  
7
10  
B3 x 6  
*1  
PSW  
3 x 8  
6
8
B3 x 6  
8
c
*1  
Precision  
P 2.6 x 6  
PTP2.6 x 6  
a
b
P2 x 4  
11  
NUT4,  
HEXAGON CAP  
1
14  
12  
15  
*2  
2
PTP3 x 8  
3
13  
4
5
No.  
Part No.  
SP Description  
No.  
Part No.  
SP Description  
1
2
3
4
5
1-509-185-31 s CONNECTOR (RECEPTACLE) 4P  
1-763-098-11 s FAN, DC (40 SQUARE)  
2-378-311-01 o NUT(XLR), PLATE  
11  
12  
13  
14  
15  
9-885-009-71 o LENS, LED  
9-885-009-72 o SOCKET, FAN  
9-885-009-73 o CASE, LOWER  
9-885-009-74 o CONNECTOR ASSY, BATTERY  
9-885-009-75 o HARNESS ASSY, XLR  
3-193-925-01 o SHOE (AC), V  
3-193-926-01 o SCREW (M3X7), 5LR PLATE SMALL  
6
7
3-692-186-01 s HOLDER,CABLE  
7-627-553-47 s SCREW PRECISION +P2X4  
3-724-723-01 s RUBBER (BATT), DROP PROTECTION  
9-885-004-70 o HARNESS ASSY, INLET(WITH SW)  
9-885-009-68 o CASE, UPPER  
7-627-556-77 s SCREW PRECISION +P2.6X6 TYPE1  
7-682-547-09 s SCREW +B3X6  
8
9
10  
7-684-221-00 s NUT 4, HEXAGON CAP  
7-685-752-09 s SCREW +PTT3X8  
9-885-009-69 o HARNESS ASSY, OUTPUT  
7-685-792-09 s SCREW +PTP2.6X6  
AC-DN2B  
3-1  
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Battery Adaptor  
101  
108  
110  
P2 x 3  
107  
P2 x 3  
P2 x 3  
109  
B3 x 5  
B3 x 5  
111  
104  
103  
P2.6 x 4  
113  
106  
P2.6 x 4  
114  
105  
PSW3 x 8  
112  
102  
P2.6 x 4  
P2.6 x 4  
P2.6 x 4  
No.  
Part No.  
SP Description  
No.  
Part No.  
SP Description  
101  
102  
103  
104  
105  
A-8278-025-C s MOUNT, V ASSY  
111  
112  
113  
114  
3-680-996-02 o PLATE  
1-766-377-12 s CONNECTOR, BATTERY  
3-606-344-01 o PLATE (ID)  
3-606-345-01 o SEAL  
3-680-997-02 o INSULATOR  
3-680-998-02 o PLATE (+)  
3-680-999-02 o PLATE (-)  
3-606-346-02 o SEAL (FRONT)  
7-627-553-38 s SCREW, PRECISION +P 2X3  
7-627-556-38 s SCREW +P 2.6X4.0  
7-682-546-09 s SCREW +B 3X5  
106  
107  
108  
109  
110  
3-669-596-00 s WASHER (2.3), STOPPER  
3-679-648-02 o SPRING, COMPRESSION  
3-679-688-02 o LEVER, RELEASE  
3-679-690-02 o MOUNT, V  
7-682-948-01 s SCREW +PSW 3X8  
3-680-952-01 o KNOB, RELEASE LEVER  
AC-DN2B  
3-2  
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3-2. Electrical Parts List  
----------  
MAIN BOARD  
----------  
(MAIN BOARD)  
Ref.No.  
or Q’ty Part No.  
Ref.No.  
or Q’ty Part No.  
SP Description  
SP Description  
C1  
C2  
C3  
C4  
C5  
! 9-885-009-14 s CAPACITOR 1uF/AC250  
! 9-885-009-15 s CAPACITOR 0.22uF/AC250  
! 9-885-009-16 s CAPACITOR 1500PF/AC250  
! 9-885-009-16 s CAPACITOR 1500PF/AC250  
9-885-009-17 s CAPACITOR 470PF/AC250  
D52  
F1  
9-885-009-11 s DIODE FCH30A06  
! 9-885-009-46 s FUSE 215005ME600  
IC1  
IC2  
IC3  
IC4  
9-885-008-98 s IC TA78M18S  
9-885-008-97 s IC IR2101  
9-885-008-99 s IC MC34262D  
9-885-009-00 s IC NJM431U-TE1  
C6  
C7  
C8  
C9  
C10  
9-885-009-18 s CAPACITOR 0.47uF/450V  
9-885-009-18 s CAPACITOR 0.47uF/450V  
9-885-009-19 s CAPACITOR 270uF/450V  
9-885-009-20 s CAPACITOR 47uF/50V  
9-885-009-21 s CAPACITOR 100uF/50V  
L1  
! 9-885-009-76 s COIL  
9-885-009-77 s COIL  
9-885-009-78 s COIL  
9-885-009-79 s COIL  
L2  
L3  
C11  
C12  
C13  
C14  
C15  
9-885-009-22 s CAPACITOR 47uF/50V  
9-885-009-23 s CAPACITOR 220uF/25V  
9-885-009-24 s CAPACITOR 15000PF/630V  
9-885-009-25 s CAPACITOR 1000PF/630V  
9-885-009-25 s CAPACITOR 1000PF/630V  
L51  
Q1  
Q2  
Q3  
Q4  
Q5  
9-885-009-01 s FET 2SK2837  
9-885-009-02 s FET 2SK2842  
9-885-009-02 s FET 2SK2842  
9-885-009-03 s TRANSISTOR 2SA1298-TE85L  
9-885-009-04 s TRANSISTOR RN2404  
C17  
C18  
C19  
C20  
C21  
9-885-009-26 s CAPACITOR 0.22uF/25V  
9-885-009-27 s CAPACITOR 4700PF/50V  
9-885-009-28 s CAPACITOR 0.1uF/50V  
9-885-009-29 s CAPACITOR 0.1uF/50V  
9-885-009-30 s CAPACITOR 10000PF/50V  
RY1  
! 9-885-009-80 s RELAY  
SW51  
9-885-009-47 s SWITCH OHD5R-60B  
C22  
C23  
C24  
C25  
C26  
9-885-009-31 s CAPACITOR 470PF/630V  
9-885-009-31 s CAPACITOR 470PF/630V  
9-885-009-31 s CAPACITOR 470PF/630V  
9-885-009-31 s CAPACITOR 470PF/630V  
9-885-009-32 s CAPACITOR 0.22uF/25V  
T1  
T2  
! 9-885-009-44 s TRANSFORMER  
9-885-009-45 s TRANSFORMER  
TH51 ! 9-885-009-13 s THERMISTOR  
ZD1  
ZD2  
9-885-009-12 s DIODE 02CZ20  
9-885-009-12 s DIODE 02CZ20  
C27  
C28  
C29  
C30  
C31  
9-885-009-32 s CAPACITOR 0.22uF/25V  
9-885-009-33 s CAPACITOR 10000PF/50V  
9-885-009-34 s CAPACITOR 470PF/50V  
9-885-009-35 s CAPACITOR 10000PF/50V  
9-885-009-36 s CAPACITOR 4700PF/50V  
C32  
C33  
C34  
C51  
C52  
9-885-009-37 s CAPACITOR 10000PF/630V  
9-885-009-37 s CAPACITOR 10000PF/630V  
9-885-009-37 s CAPACITOR 10000PF/630V  
9-885-009-38 s CAPACITOR 680uF/25V  
9-885-009-38 s CAPACITOR 680uF/25V  
C53  
C54  
C55  
C56  
C57  
9-885-009-38 s CAPACITOR 680uF/25V  
9-885-009-39 s CAPACITOR 100uF/25V  
9-885-009-40 s CAPACITOR 10000PF/AC250  
9-885-009-41 s CAPACITOR 470PF/630V  
9-885-009-41 s CAPACITOR 470PF/630V  
C58  
C59  
C60  
9-885-009-42 s CAPACITOR 0.1uF/50V  
9-885-009-43 s CAPACITOR 1uF/25V  
9-885-009-43 s CAPACITOR 1uF/25V  
D1  
D2  
D3  
D4  
D5  
9-885-009-05 s DIODE D5SB60  
9-885-009-06 s DIODE SF10L60U  
9-885-009-07 s DIODE U1DL44A-TE12L  
9-885-009-07 s DIODE U1DL44A-TE12L  
9-885-009-08 s DIODE U1JU44-TE12L  
D6  
D7  
D8  
D9  
D10  
9-885-009-09 s DIODE 1SS184-TE85L  
9-885-009-09 s DIODE 1SS184-TE85L  
9-885-009-09 s DIODE 1SS184-TE85L  
9-885-009-09 s DIODE 1SS184-TE85L  
9-885-009-09 s DIODE 1SS184-TE85L  
D11  
D12  
D13  
D14  
D51  
9-885-009-09 s DIODE 1SS184-TE85L  
9-885-009-09 s DIODE 1SS184-TE85L  
9-885-009-09 s DIODE 1SS184-TE85L  
9-885-009-10 s DIODE U2JC44  
9-885-009-11 s DIODE FCH30A06  
AC-DN2B  
3-3  
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-----------  
SUB01 BOARD  
-----------  
3-3. Supplied Accessory  
Ref.No.  
or Qty Part No.  
SP Description  
Ref.No.  
or Qty Part No.  
SP Description  
1pc  
1-790-446-11 s CORD, CONNECTION (XLR TYPE 4P)  
IC101  
9-885-009-48 s IC MC34067P  
3-4. Optional Fixture  
Q101  
Q102  
Q103  
Q104  
9-885-009-49 s TRANSISTOR 2SC2712-TE85L  
9-885-009-49 s TRANSISTOR 2SC2712-TE85L  
9-885-009-50 s TRANSISTOR 2SA1162-TE85L  
9-885-009-51 s TRANSISTOR DTC114EKA-T146  
Part No.  
SP Description  
J-6530-180-A o SCREW DRIVER, 5-WING (FOR M3)  
ZD101  
9-885-009-52 s DIODE 02CZ6.8Y  
-----------  
SUB02 BOARD  
-----------  
Ref.No.  
or Qty Part No.  
SP Description  
D251  
D252  
D253  
9-885-009-62 s DIODE FCH30A06  
9-885-009-63 s DIODE 1SS184-TE85L  
9-885-009-64 s DIODE 1SS181-TE85L  
IC251  
IC252  
IC253  
9-885-009-53 s IC NJM2903M-TE2  
9-885-009-54 s IC NJM2904M-TE2  
9-885-009-55 s IC NJM431U-TE1  
PC201 ! 9-885-009-56 s PHOTO COUPLER TLP621D4-GB-LF2  
PC202 ! 9-885-009-56 s PHOTO COUPLER TLP621D4-GB-LF2  
PC203 ! 9-885-009-56 s PHOTO COUPLER TLP621D4-GB-LF2  
Q251  
Q252  
Q253  
Q254  
Q255  
9-885-009-57 s FET 2SJ334  
9-885-009-58 s TRANSISTOR 2SC2655 TPE6  
9-885-009-59 s TRANSISTOR DTC114EKA-T146  
9-885-009-60 s TRANSISTOR 2SC2712-TE85L  
9-885-009-61 s TRANSISTOR 2SA1162-TE85L  
Q256  
9-885-009-61 s TRANSISTOR 2SA1162-TE85L  
ZD251  
ZD252  
ZD253  
9-885-009-65 s DIODE HZM5.1N B2-TL  
9-885-009-66 s DIODE HZM18N B2-TL  
9-885-009-65 s DIODE HZM5.1N B2-TL  
-----------  
SUB03 BOARD  
-----------  
Ref.No.  
or Qty Part No.  
SP Description  
D301  
9-885-009-67 s DIODE TLG223  
-----  
FRAME  
-----  
Ref.No.  
or Qty Part No.  
SP Description  
HN001  
9-885-009-69 o HARNESS ASSY, OUTPUT  
HN002 ! 9-885-009-70 o HARNESS ASSY, INLET (WITH SW)  
HN003  
HN004  
9-885-009-74 o CONNECTOR ASSY, BATTERY  
9-885-009-75 o HARNESS ASSY, XLR  
AC-DN2B  
3-4  
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Overall  
Overall  
Section 4  
Diagrams and Board Layouts  
AC-DN2B (SY) : S/N 10001 and Higher  
!
!
!
!
!
4
1
3
2
!
!
!
MAIN  
Overall  
LOT NO. 085-  
AC-DN2B  
4-1  
4-1  
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MAIN  
MAIN  
AC-DN2B (SY) : S/N 10001 and Higher  
MAIN -A SIDE-  
MAIN -B SIDE-  
AC-DN2B  
4-2  
4-2  
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SUB01, SUB02  
SUB01, SUB02  
AC-DN2B (SY) : S/N 10001 and Higher  
SUB01 -A SIDE-  
SUB01 -B SIDE-  
AC-DN2B (SY) : S/N 10001 and Higher  
SUB02 -A SIDE-  
SUB02 -B SIDE-  
AC-DN2B  
4-3  
4-3  
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Frame  
Frame  
AC-DN2B (SY) : S/N 10001 and Higher  
1
D5  
D51  
!
SW1  
!
L51  
CN52  
HN004  
HN003  
CN1  
Q2  
C22  
C23  
F1  
2
1
+
4
3
2
1
DC OUT  
NC  
R37  
ZD01  
AC(H)IN  
GND  
IC2  
4
1
GND  
C26  
1
2
3
4
8
7
6
5
S
NC  
!
C1  
3
R38  
AC(C)IN  
2
GND  
HN002  
CN51  
Q3  
R56  
R55  
4
3
2
1
5
4
3
2
1
DC OUT  
NC  
R46  
R45  
+
R39  
C59  
C60  
L1  
!
+
C24  
C25  
C51  
C52  
C53  
C54  
C34  
C33  
C32  
R40  
NC  
GND  
GND  
D13  
ZD02  
S
NC  
!
RY1  
GND  
T2  
R9  
4
R8  
D10  
D11  
9
8
R10  
R11  
C109  
D52  
D251  
D9  
C29  
R44  
C30  
CN252  
HN001  
6
7
8
C13  
5
4
3
2
1
+
3
2
1
RID IN  
!
T1  
R108 C108  
R122  
R251  
+
BATT(+)OUT  
BATT(-)OUT  
C102  
R109  
SENS  
GND  
GND  
R253  
C101  
R110  
C56  
C57  
R257  
C107  
!
C4  
5
4
2
3
4
5
R254  
R255  
R112  
R111  
C28  
C254  
R275  
ZD251  
Q251  
R43  
R42  
R258  
R256  
C110  
R264  
R277  
!
C3  
!
C2  
R113  
IC1  
2
D4  
PC202  
(2/2)  
D12  
C255  
R276  
R260  
C252  
VR251  
R41  
10  
R54  
!
3
1
R51  
R271  
5
6
2
3
5
16 15 14 13 12 11 10  
9
SW51  
1
7
R289  
R263  
R262  
IC252  
(1/2)  
IC252  
(2/2)  
D252  
IC101  
R52  
C11  
C12  
Q254  
IC253  
C27  
R278  
R272  
1
2
3
4
5
6
7
8
TH51  
C260  
7
!
C58  
ZD252  
PC201  
(2/2)  
R279  
R259  
R261  
C251  
R103  
11  
!
C105  
1
2
3
R102  
6
R106 C106  
R104 R107  
C103 R101  
SUB01  
C104  
R105  
9
R268  
!
R269  
PC203  
(2/2)  
FAN  
R265  
R266  
R267  
R291 C259  
R270  
R47  
D253  
R252  
R286  
R285  
5
6
7
Q253  
R292  
IC251  
(2/2)  
R115  
R114  
R6  
R7  
D14  
C113  
R121  
R120  
D1  
Q103  
L2  
L3  
D2  
R4  
2
3
Q104  
Q256  
Q255  
R293  
2
5
9
1
Q252  
R281  
Q1  
IC251  
(1/2)  
Q101  
ZD101  
R118  
Q102  
C112  
R12  
R284  
R282 C261  
C253  
ZD253  
D8  
C256 R280  
S
D3  
R17  
R119  
R117 C111 C114 C115  
R13  
R14  
C257  
R287  
C14  
C9  
D7  
C8  
R36  
R288  
C6  
C7  
R1  
C15  
3
1
2
R2  
R35  
R3  
R16  
R5  
PC203  
(1/2)  
C5  
13  
R202  
!
!
!
PC202  
(1/2)  
R21  
R22  
R23  
R24  
R25  
R26  
R27  
R28  
R29  
R30  
Q4  
12  
11  
Q5  
R31  
IC4  
IC3  
R18  
R19  
1
2
3
4
8
7
6
5
PC201  
(1/2)  
R201  
R32  
C17  
C202  
C20  
R20  
C201  
D6  
10  
C10  
R34  
C18  
C16  
C31  
R15  
C21  
C19  
C55  
SUB02  
MAIN  
Frame  
AC-DN2B  
4-4  
4-4  
A
B
C
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E
F
G
H
For the U.S.A. and Canada  
SAFETY CHECK-OUT  
After correcting the original service problem,  
perform the following safety checks before  
releasing the set to the customer :  
Check the metal trim, “metallized” knobs, screws,  
and all other exposed metal parts for AC  
leakage. Check leakage as described below.  
LEAKAGE TEST  
The AC leakage from any exposed metal part to  
earth ground and from all exposed metal parts to  
any exposed metal part having a return to  
chassis, must not exceed 0.5 mA. Leakage  
current can be measured by any one of three  
methods.  
1. A commercial leakage tester, such as the  
Simpson 229 or RCA WT-540A. Follow the  
manufacturers’ instructions to use these  
instruments.  
2. A battery-operated AC milliammeter. The  
Data Precision 245 digital multimeter is  
suitable for this job.  
3. Measuring the voltage drop across a resistor  
by means of a VOM or battery-operated AC  
voltmeter. The “limit” indication is 0.75 V, so  
analog meters must have an accurate low-  
voltage scale. The Simpson 250 and Sanwa  
SH-63Trd are examples of a passive VOM  
that is suitable. Nearly all battery operated  
digital multimeters that have a 2 V AC range  
are suitable. (See Fig. A)  
To Exposed Metal  
Parts on Set  
AC  
voltmeter  
(0.75V)  
0.15 µF  
1.5 kZ  
Earth Ground  
Fig A. Using an AC voltmeter to check AC leakage.  
AC-DN2B  
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Printed in Japan  
2000. 10 16  
©2000  
Sony Corporation  
AC-DN2B (SY) J, E  
9-968-578-01 (1)  
Communication System Solutions Network Company  
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