Onkyo TX-SA806 Service Manual page 131

SERVICE PROCEDURES-1
1. Replacing the fuses
This symbol located near the fuse indicates that the
fuse used is show operating type, For continued protection against
fire hazard, replace with same type fuse, For fuse rating, refer to
the marking adjacent to the symbol.
Ce symbole indique que le fusible utilise est e lent.
Pour une protection permanente, n'utiliser que des fusibles de meme
type. Ce demier est indique la qu le present symbol est apposre.
<Notes>
<DC> : TX-SR806 USA and Canadian model
<DD> : TX-SR806 USA model
<DT> : TX-SR806 Asian model for 120V
<MP> : TX-SR806 European model
<MA> : TX-SR806 Australian model
REF NO. PART NAME
F901 FUSE
F901 FUSE
F4000 FUSE
F4001 FUSE
F6901 FUSE
F6902 FUSE
2. To initialize the unit
1. Press and hold down VCR/DVR button, then press STANDBY/ON button when the unit is powered on.
2. After " Cl ear " is displayed, the preset memory and each mode stored in the memory are initialized and will
return to the factory settings, and turn to Standby mode.
3. Safety check out
(U.S.A. model only)
After correcting the original service problem, perform the following safety check before releasing the unit to
the customer.
Leakage current Check
Measure the leakage current to a known earth ground (water pipe or conduct etc.) by connecting a leakage current
tester between the earth ground and exposed metal parts of the unit (input/output ground terminals, screw heads or
metal overlays etc.).
Plug the power supply cord directly into a 120Vac 60Hz wall socket and turn STANDBY/ON button on.
Any current measured must not exceed 0.5mA.
4. Memory Backup
This model uses not a capacitor but a EEPROM IC(Q1022) in order to retain radio presets and other settings.
So, memory contents will be kept eternally with no care.
5. Replacing Power Amplifier Parts
When a power amplifier of certain channel is broken and goes into Protect mode, the following parts in the channel
must be replaced at the same time, because these parts get damage together in most cases.
Front R ch
Front L ch
Q6050, Q6060 Q6051, Q6061
Q6030, Q6040 Q6031, Q6041
Q6011, Q6101
Q6010, Q6100
Q6110, C6020 Q6111, C6021
R6070, R6100 R6071, R6101
R6250, R6260 R6251, R6261
R6271, R6281
R6270, R6280
R6290, R6300 R6291, R6301
R6310 R6311
<MT> : TX-SR806 Asian model for 220V-240V
<MQ> : TX-SR806 Hong kong model
<MR> : TX-SA806 Chinese model
DESCRIPTION PART NO.
12A-UL/T-233 252301GR
6.3A-SE-EAK 252079GR
4A-UL/T-233 252325GR
4A-UL/T-233 252325GR
15A-TUL-250V 252303GR
15A-TUL-250V 252303GR
Center ch Surround L ch
Q6052, Q6062 Q6053, Q6063
Q6032, Q6042 Q6033, Q6043
Q6012, Q6102 Q6013, Q6103
Q6112, C6022 Q6113, C6023
R6072, R6102 R6073, R6103
R6252, R6262 R6253, R6263
R6272, R6282 R6273, R6283
R6292, R6302 R6293, R6303
R6312 R6313
REMARKS
!, <DC, DD, DT>
!, <MP, MA, MQ, MT, MR>
!
!
!
!
Surround R ch Surround Back
L ch
Q6054, Q6064 Q6055, Q6065
Q6034, Q6044 Q6035, Q6045
Q6014, Q6104 Q6015, Q6105
Q6114, C6024 Q6115, C6025
R6074, R6104 R6075, R6105
R6254, R6264 R6255, R6265
R6274, R6284 R6275, R6285
R6294, R6304 R6295, R6305
R6314 R6315
TX-SR806/SA806
Surround Back
R ch
Q6056, Q6066
Q6036, Q6046
Q6016, Q6106
Q6116, C6026
R6076, R6106
R6256, R6266
R6276, R6286
R6296, R6306
R6316