Onkyo TXSR 444 Service Manual

Page 1

Ref.No. : 4518-R3

AV RECEIVER 3 er Vi C 9 Manual

TX-SR444

V Front Cover This a e

V Pre Issue (2015-Apr) V Note for Parts List
V Final Issue (2015-May) V Panel
V Reset

V Amp Diaq Mode afterAbnormal Conditions
V Model and Destination
V Firmware
Adjustment ( Unnecessary)
V Hookug and Setting
V Trouble Shoot
V Disassembly
V Schematic Diagram
V Exploded View
V Apgendix

SAFETY-RELATED COMPONENT WAHNINGI! {COMPONENTS IDENTIFIED BY MARK A ON
THE SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR RISK OF FIRE AND
ELECTRIC SHOCK, REPLACE THESE COMPONENTS WITH DNKYD PARTS WHOSE PART
NUMBERS APPEAR AS SHOWN IN THIS MANUAL MAKE LEAKAGEVCURRENT OR
RESISTANCE MESUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY
INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE
CUSTOMER,

or: :c :r)

ONKYO®

Published by Onkyo & Pioneer Corporation Grobal CS Department

Page 13

1 2 3

No Picture

I In general
D Connection cable is bent , twisted or damaged ?
D Input is switched on TV .7

I No picture from connected player by HDMI input terminal
D Chose input selector which is connected to player ?
D Listening mode is not Pure Audio ?

D Dont use HDMI-DVI adaptor. From personal computer ?

I No picture from connected player by component video terminal
D Output to TV connected to component video out terminal from player's picture
connected to the composite video input terminals ?

I No problem about above items
D Unplug power cord
After 10 seconds, connect power cord again
D Reset this model

5 6

Hookup and Setting

COMMON
e

Page 15

1 2 3 4 5 6

No Sound (HDMI in) Tr uble Shoot

Here the trouble shoot which focuses on the hardware troubles regarding PCB assembly is explained.
Of course, with actual repair there are also troubles due to damaged Power Transformer, Wiring, soldering etc. in addition to PCB assemblyt

Process Check Point Damaged PCB
No Good
P2801 B (BAPRC-1758)
1 0 No.2 pin : +15v £0 BAVD'1735
stooe (BAPRC 1758) N°G°°d
2 W7 pin : +313v £0 BAPRC1758
BAVD-1735
3 R6690 (BAAF-1712) 02w BAAF_1712 BAPRC-1758
o :+2115v
J4036 J4000 (BAAF-1712) No Good
4 o J4000 : +15v OK BAAF-1712
o J4036 : -15v
P8002A (BAPRC 1758) ""6"
5 o No.11 pin: +312v i0 BAAF'mZ
m (BAPRC-1758) No Good
6 0 No.2 pin :Check signal OK BAPRC-1758
0 No.4 pin : Check signal
No Good
J4051 (BAAF-1712)
7 0 :Check signal iOK EMF-1712 BACLA'1734
BAAF-1712
06050 oeoso(BAAF-1712) No Good
#1;
8 CheCk Sign? 0 BACLA 1734
O 06050(base) : Check signal '
O Q6060(base): Check signal
->
9 BAAF-1712

0 Each voltage is shown as the reference value

Value error: Plus or minus 15/0 TX-SR343/444/HT-R494
6

1 2 3 4 5

Page 70

Pans marked by "NSP" are generally unavailable because
they are not in our Master Spare Parts LisI.

NUMBER SPECIFIED.

NOTE 1 THE COMPONENTS IDENTIFIED BY THE MARK
l ARE CRITICAL FOR RISK OF FIRE AND
ELECTRIC SHOCK. REPLACE ONLY WITH PART

1/39 PAGE

TX-SR444(B)M DC

(B) : Black color model
: 120V

Canadian/USN3Mexico) model

: NSP

3EXPLODED VIEW PARTS LIST

Tx-SR4443B)M DC 3

3REF No. PART NAME DESCRIPTION Q'TV PART No. (SN) REMARKS3
' 13 3
TRANSISTOR 280519er 1 2203063
306050 or TRANSISTOR 28C446850 ( 1) 2202523
306050 or TRANSISTOR 2804468? 3 1) 2202526
306050 or TRANSISTOR 28051985R 3 1) 2203062
306051 TRANSISTOR 280519er 1 2203063
306051 or TRANSISTOR 28C446850 3 1) 2202523
306051 or TRANSISTOR 2804468? 3 1) 2202526
306051 or TRANSISTOR 28051985R 3 1) 2203062
306052 TRANSISTOR 280519er 1 2203063
306052 or TRANSISTOR 28C446850 3 1) 2202523
306052 or TRANSISTOR 2804468? 3 1) 2202526
306052 or TRANSISTOR 28051985R 3 1) 2203062
306053 TRANSISTOR 280519er 1 2203063
306053 or TRANSISTOR 28C446850 3 1) 2202523
306053 or TRANSISTOR 2804468? 3 1) 2202526
306053 or TRANSISTOR 28051985R 3 1) 2203062
306054 TRANSISTOR 280519er 1 2203063
306054 or TRANSISTOR 28C446850 3 1) 2202523
306054 or TRANSISTOR 2804468? 3 1) 2202526
306054 or TRANSISTOR 28051985R 3 1) 2203062
306055 TRANSISTOR 280519er 1 2203063
306055 or TRANSISTOR 28C446850 3 1) 2202523
306055 or TRANSISTOR 2804468? 3 1) 2202526
306055 or TRANSISTOR 28051985R 3 1) 2203062
306056 TRANSISTOR 280519er 1 2203063
306056 or TRANSISTOR 28C446850 3 1) 2202523
306056 or TRANSISTOR 2804468? 3 1) 2202526
306056 or TRANSISTOR 28051985R 3 1) 2203062
306060 TRANSISTOR 28A194150 1 2203053
306060 or TRANSISTOR 28A169550 3 1) 2202513
306060 or TRANSISTOR 28A1695? 3 1) 2202516
306060 or TRANSISTOR 28A1941rR 3 1) 2203052
306061 TRANSISTOR 28A194150 1 2203053
306061 or TRANSISTOR 28A169550 3 1) 2202513
306061 or TRANSISTOR 28A1695? 3 1) 2202516
306061 or TRANSISTOR 28A1941rR 3 1) 2203052
306062 TRANSISTOR 28A194150 1 2203053
306062 or TRANSISTOR 28A169550 3 1) 2202513
306062 or TRANSISTOR 28A1695? 3 1) 2202516
306062 or TRANSISTOR 28A1941rR 3 1) 2203052
306063 TRANSISTOR 28A194150 1 2203053
306063 or TRANSISTOR 28A169550 3 1) 2202513
306063 or TRANSISTOR 28A1695? 3 1) 2202516
306063 or TRANSISTOR 28A1941rR 3 1) 2203052
306064 TRANSISTOR 28A194150 1 2203053
306064 or TRANSISTOR 28A169550 3 1) 2202513
306064 or TRANSISTOR 28A1695? 3 1) 2202516
306064 or TRANSISTOR 28A1941rR 3 1) 2203052
306065 TRANSISTOR 28A194150 1 2203053
306065 or TRANSISTOR 28A169550 3 1) 2202513
306065 or TRANSISTOR 28A1695? 3 1) 2202516
306065 or TRANSISTOR 28A1941rR 3 1) 2203052
306066 TRANSISTOR 28A194150 1 2203053