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1

/RESET

I

Reset signal input terminal    “L”: reset    Fixed at “H” in this unit

2

BU_IN

I

Battery voltage detection signal input terminal    “L”: over voltage

3

REM_IN

I

Remote detection signal input terminal    “L”: remote on

4

SP_IN

I

Audio detection signal input terminal

5

Vss

-

Ground terminal

6

Vdd

-

Power supply terminal (+3.3V)

7

LED_ON

O

POWER PROTECT indicator LED drive signal output terminal    “H”: LED on

8

AMP_STBY

O

Standby signal output to the power amplifi er    “L”: standby

9

AMP_MUTE

O

Muting on/off control signal output to the power amplifi er    “H”: muting on

10

AMP_FAULT

I

Fault detection signal input from the power amplifi er    “L”: fault

11

AMP_SCL

O

I2C clock signal output to the power amplifi er

12

AMP_SDA

I/O

Two-way I2C data bus with the power amplifi er

13

INTP3

O

Muting on/off control signal output terminal    “L”: muting on

14 to 17

NC

-

Not used

18

TEMP_POW1

I

Temperature measurement terminal    Not used

19

TEMP_POW2

I

Temperature measurement terminal for power supply section (A/D input)

20

TEMP

I

Temperature measurement terminal (A/D input)

21

TEMP_AMP

I

Temperature measurement terminal for amplifi er section (A/D input)

22

MUTE

O

Muting control signal output terminal    Not used

23

DCDC_ON

O

Power on/off control signal output terminal for DC/DC converter    “H”: power on

24

TOOL0

I/O

Firmware update mode setting terminal    “L”: update mode    Fixed at “H” in this unit

Note:
•  -XX and -X mean standardized parts, so 

they may have some difference from the 
original one.

•  Items marked “

*” are not stocked since 

they are seldom required for routine ser-
vice. Some delay should be anticipated 
when ordering these items.

•  The mechanical parts with no reference 

number in the exploded views are not sup-
plied.

•  Color Indication of Appearance Parts Ex-

ample:

  KNOB, BALANCE (WHITE) . . . (RED)
   

 

 



   

 

Parts Color  Cabinet’s Color

When the complete MAIN board (Ref. No. 4) is replaced, be 
sure to apply the grease (OIL COMPOUND (KS609)) so as to 
cover the IC301 on the MAIN board.

 1 

3-971-322-01 SCREW 

(2.6X8)

  2 

4-531-202-11  SCREW M2 (AL TYPE, OUTER) (L = 6 mm)

  3 

2-892-797-02  SCREW +PTW M2 (L = 3.5 mm)

  4 

A-2090-858-A  MAIN BOARD, COMPLETE (See Note)

  5 

4-580-473-01  SHEET, HEAT TRANSFER (CHIP)

  FU1 

1-523-461-11  MINI FUSE (BLADE TYPE) (15 A/32 V)

  Ref. No. 

Part No. 

Description 

Remark

  Ref. No. 

Part No. 

Description 

Remark

   

A-2090-858-A  MAIN BOARD, COMPLETE (See Note)

  

 

********************

   

 

< CONNECTOR >

  CN101 

1-843-527-11  PIN, CONNECTOR 10P (SIGNAL INPUT)

  CN501 

1-843-330-31  PIN, CONNECTOR 16P

   

 

< LED >

  D514 

6-504-260-01  LED   1L034XG42A0CAT01 (POWER PROTECT)

   

 

< FUSE >

  FU1 

1-523-461-11  MINI FUSE (BLADE TYPE) (15 A/32 V)

   

 

< IC >

  IC301 

6-721-943-01  IC   TAS5414CTPHDRQ1 (See Note)

  IC503 

8-759-836-33  IC   TL594CDTB-R2

  IC507 

6-722-640-01  IC   NJM78L18UA-TE1

   

 

< FET >

 Q513  6-553-668-01 FET 

NTMFS5C646NL

 Q514  6-553-668-01 FET 

NTMFS5C646NL

   

 

< SWITCH >

  S101 

1-570-114-31  SWITCH, SLIDE (INPUT SELECT)

  S102 

1-570-114-31  SWITCH, SLIDE (REAR LPF)

  S103 

1-570-114-31  SWITCH, SLIDE (FRONT HPF)

************************************************************

  

 

ACCESSORIES

   

 

************

   

4-581-373-11  MANUAL, INSTRUCTION (ENGLISH, FRENCH,

 GERMAN, SPANISH, DUTCH, SWEDISH,

 ITALIAN, PORTUGUESE, POLISH, RUSSIAN,

ARABIC, PERSIAN, THAI) (U)

   

4-581-373-21  MANUAL, INSTRUCTION (ENGLISH) (IND)

************************************************************

   

PARTS FOR INSTALLATION AND CONNECTIONS

   

**************************************

  501 

1-849-186-11  CONNECTION CABLE (Power connection cable)

  502 

1-849-187-11  RCA CABLE 200 mm (RCA input cord)

  503 

3-264-798-01  CAP (for RCA input cord) (1 piece)

  504 

1-849-185-11  CABLE (WITH CONNECTOR) 1 m 

(High level input cord)

  505 

4-578-769-01  BRACKET FOOT (Bracket) (1 piece)

  506 

7-685-792-09  SCREW +PTT 2.6X6 (S) (Bracket screw) (1 piece)

  507 

4-238-407-12  SCREW (1) (4X20), +BV TAPPING 

(Mounting screw) (1 piece)

POWER CONNECTION CABLE

u 1

RCA INPUT CORD

u 1

BRACKET

u 2

HIGH LEVEL INPUT CORD

u 1

MOUNTING SCREW

ø 4 mm 

u 20 mm

u 2

BRACKET SCREW

ø 2.6 mm 

u 6 mm

u 2

CAP

u 4

  Ref. No. 

Part No. 

Description 

Remark

  Ref. No. 

Part No. 

Description 

Remark

When indicating parts by reference num-
ber, please include the board name.

Only part of electrical parts that mounted 
on the board of this unit can be replaced 
for repair. 
Since electrical parts that are not de-
scribed in the electrical parts list cannot be 
replaced for repair, replace the complete 
mounted board when these electrical parts 
are defective.

Note:
•  Due to standardization, replacements in 

the parts list may be different from the 
parts specifi ed in the diagrams or the com-
ponents used on the set.

•  -XX and -X mean standardized parts, so 

they may have some difference from the 
original one.

•  Items marked “*” are not stocked since 

they are seldom required for routine ser-
vice. Some delay should be anticipated 
when ordering these items.

• RESISTORS
  All resistors are in ohms.
 METAL: 

Metal-fi lm resistor.

  METAL OXIDE: Metal oxide-fi lm resistor.
 F: 

nonfl ammable

• CAPACITORS
 uF: 

μF

• COILS
 uH: 

μH

• SEMICONDUCTORS
  In each case, u: μ, for example:
 uA. 

. : 

μA. . , uPA. . , μPA. . , 

 uPB. 

. 

: 

μPB. . , uPC. . , μPC. . , 

 uPD. 

. 

: 

μPD. .

Note: When the complete MAIN board or IC301 on the MAIN board are replaced, be sure to apply 

the grease (OIL COMPOUND (KS609)) so as to cover the IC301 on the MAIN board.

1.0

2015.10

New

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

How to search for a contact point of signal lines or the like in DIAGRAMS SECTION
If a contact point of a BLOCK DIAGRAM, PRINTED WIRING BOARD or SCHEMATIC DIAGRAM is shown in a different page, use 
the PDF fi le search function to fi nd one.

e.g.) If a contact point is shown as 

, follow the procedure below.

Procedure:
1.  Press the [F] key while pressing the [Ctrl] key.
2.  Input “>001Z” in the search box and press the [Enter] key.
3.  The relevant part (page), where the contact point is shown, appears.

Note: If you still see the original page, press the [Enter] key again.