Onkyo TXSR 308 Service Manual
This is the 81 pages manual for Onkyo TXSR 308 Service Manual.
Read or download the pdf for free. If you want to contribute, please upload pdfs to audioservicemanuals.wetransfer.com.
Extracted text from Onkyo TXSR 308 Service Manual (Ocr-read)
Page 1
Ref. No. 4186
ON KYO SERVICE MANUAL 2°
AV RECEIVER
MODEL TX-SR308(B)(S)(G)
666éééioé
(-3
ER?
9 o o
.3 8 i5
TX-SR308(B) : Black model W
TX-SR308(S) : Silver model
TX-SR308(G) : Golden model
SAFETY-RELATED COMPONENT
WARNINGII
COMPONENTS IDENTIFIED BY MARK AON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LISTARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.
ONKYO.
IMAGINATIVE SIGHT & SOUND
Page 2
TROUBLE SHOOT-1
No Power
No Power
1
BAETC-0376/0390 (Power supply)
BADG-O364 (MPU Board)
JL901 4pin +12V
2pin +10V
NO
V
BAETC-(B76/0390 (Power supply)
Replace Power Supply Board orRepair
Sub Transformer T902 and itsperipheral
circuit.
TX-SRSOB/ /508/ 578/ 608 HT-R280/ 380/ 8/ 580/ 680/ 980/ C230/ 0260 DTFl-20.2/ 30.2
YES
After replacing F901 on
BAETC-0376/0390 (Power supply)
either of F901 on Power supply Board
or F6901/F6902 on BAAF-0341 (AF
Board) blows out?
NC
This is just for general reference and does not including every single case.
BAETC-0376/0390
(Power supply)
BADG-0364 (MPU Board)
After Power on,
Voltage atJL90171 pin is changed
from +12V t 0 0V?
NO
1 YES
BAETC-0376/O390
(Power Suppl
F901 is blown out?
y)
(No
BADG-0346 (MPU Board)
After Power on, Voltage at
1 YES
Replacing F901 will not
improve the unit.
BAAF-0355(AF Board)
Replace AF Board".
or D6901 (Powersupply diode)
Power AMP(Final_TR and A_Class AMP) "
and also repair their peripheral circuit.
P200122/21pin +5V
17/18pin +12V
YES
BADG-0364 (MPU Board)
Replace 0701 and also
repairits peripheral circuit.
fl
NO
BA ETC-0359/0352/0345/
(trans teminal Board)
After Power on, Voltage at
JL952 AC1OV
(No
Replace Power
Transformer or
Repair its peripheral circuit.
BAVD-0375/0389
(Video board)
Replace Video Board or
Repair D901/09023/09031
and their peripheral circuit.
3'09 woe-um 093C) /0830 /086 /089 /089 /889 /088 /08?,'H'iH 809 /8L9 /809/ /80€HS'Xi
Page 8
TX-SR308/ 508 HT-R280/ 380/ 538/ 580/ HT-RC230
MAIN/DSP Update Procedure-1 (How to check FW Version)
[NOTE] FW version combination FW Version Combination "As of September, 2010
* OSD FW cannot be updated. Main DSP OSD marking
* Combination of "OSD_FW and Main_FW" has limitation . 1st Lot 1_04 1_00 1_oo NO
* Do not use combination except the list. 105 1 01 A
1. ' B
Later Lots 1 g: 1.01 C
1.08 1.02 D
1.09 E
. , marking is the S/N end
OSD menu Will not appear. Before FW UPdate. check the verSIons of FWs.
* To upgrade OSD FW version,
Replace 08105 SPI MEMORY "EN25032A-100HIP or HDMI Board.
To check FW Versions on the monitor,
While the unit is on, hold down [DISPLAY] and the press [ON/STANDBY].
FW Versions of Main/DSP/OSD will be shown on the monitor like below.
Version Information ON/STANDBY
Main: 1 .07/10413AL
DSP: 1.02/10419a38
OSD: 1 .01/10204A0
CHECKSUM: 27D3879D
+(T E) DISPLAY
To check FW versions on Front Display,
1_ While the unit is on, hold down [DISPLAY] and the press [ON/STANDBY].
Main FW Version will be shown on Front Display.
e.g. M 31 07/1041 3AL * * It depends on the version.
2. While Main FW Version is shown, press [+(TONE)].
DSP FW Version will be shown on Front Display.
6'9 0:1..03211 04,1"6a3381 7
* It depends on the version.
OSD FW Version will not be shown on Front Display.