Onkyo TX 8255 Schematic
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Extracted text from Onkyo TX 8255 Schematic (Ocr-read)
Page 1
A 1 B
BLOCK DIAGRAM _
TX 8255
KEVINTa
AC IN
1 1
1 SELECTOR 1
03°? BALANC 1
1 PHONOQEOUUZER 1092730116 R E 1
1 301 *1 0401 1
1 1 POWER AMP. SP1 AHELAY 1
mono o 11> FHONO 1 1 M1368 RL591 1,,1
1 E E 1
on 1 1 1/ 1K1 + 1
O 1 Tgigéj BASS 1W1 1 SPEAIEHS
R409 L L 1
1- 01 O 1, 1 ,,,,, 1 0402 To POWERAMF SFRfiSHSEQLM 1 F501 1
3 P51 1 1 1 1 2066 MgTING 11 1\ 7 7 1 1 1
1 <1 1 1 4-1-1 > 491 1
E IN 0 1 1 1 1K 1 1 + 1 SPEAKERS
5 LINEI 1 j 1 1 PROTECT 1 r r '-1® 1 B
_ mm." C MOTORDRIVE """ ' 05251526 ELM RELAV "
g 0451 05511552 DRIVE DRIVE 1
.1 TA7291S 0591 12592 1
0 1
I z 1 1
LINE 2 IN 0 3 > 1 1 1 1 11 / 1
5 2 s1 :2 5 0 < m
1 TUNL § + E E % fi
1 g I VOLTAGOEQIQREGURATOR 1
0'" é) HE02 E +12v ,Izv 1-1 Ea D91 9113 1
TAPEZ 3 1 1
A
1" (1) PLA 2 1,: E 1 1 1
-12v 1-1-1
1 19 -12v .33 1:5 , 1 1 THERMAL
1 I_I _ V 1 SENSOR 1
1 : 5TB 0922 113 w 1111 1 1 01155 1
1 w 1 1 1
1 : CL 1a 1a 1 E ''''''' J
1 0915 C916 1
1 g 6 1
D 7 1
1 92° 3 0911 1
1 1
_ _ _____________ _ ___ _ _ _________________ J >MDCtypaor11y
1 RDSCLK 1 1, 7 7 ,1 > MPF Iype only
-1-m 1 1 7,,
1 1 77777777777777777777
_1-17101' 1 1 1 MNNTJSANS' PRIMARV
1 TU»L 1 1 1
FMIAM(RDS) TUNER uNIT 1 1 1 1 g P11111331
1 1 1 1 7 7 1
-Ifimssr1r > 1 1 a K 1
1 1D, 1 1 1 W1
:mgg 12 Q7176 1 1 1 1 L L
-1-~ 1 1 1
1 1 1 1
1 1 1 1 m
1 1 1 1 3 F903
1 1 1 1 g
1 1 E
1 1 E
1 1
1 1 SUB TRANS.
1 1 T902
1 1
1 1 -1<1-
1 1
1 MAIN MICFIOPROCESSOR 1
1 0501 POW 1 0912
1._o M30622Mw1= 1 \ ®
a. 1, RI +5V70PU 0701 1
1 W/ *sv MPU 1 m 1
BACKUP 50709 1
IRIN _0- w 1 C704 1
o 1
1 1 1
1R ouT Mow 1
L 77777777777777777777777777777777777777777777777777777777 1
17 7777777777777777777777777777777777777777777777777777777777777777777777777777 V 7 V 7 7 fl 7 7 '1
1 STA é DISPLAY CONTROL 1
1 Noav REM1N 1
1 , LEDsTEv 1
5: FL DISPLAY 'VF 1
1 REMOLEKSFNSOR 0352 FLACI 1
1 ELACz 1
11 1
1 * HST 1 11 1
1 c : FL DHIVEFI +5v CPU 1
1 CLK 0951 1
1 $- M56005 1
1 1 ' ' ' 1
1 1) 1 CONTROL KEYS 1
1 <2 1 1
1 1 o o o 1
1 EvINTo «1 <1 1 1
1 KEflNTI 1 o o o 1
1 KEVINT 1 1
1 1
Page 2
A
BLOCK DIAGRAM
TX 8255
KEVINTa
AC IN
1 1
1 SELECTOR 1
03°? BALANC 1
1 PHONOQEOUUZER 1092730116 R E 1
1 301 *1 mm 1
1 1 POWER AMP. SP, AHELAY 1
mono o 11> FHONO 1 1 M1368 HL59| 1,,1
1 , , 1
on 1 1 1/ 1K1 + 1
O 1 Tgigéj BASS 1W1 1 SPEAIEHS
R409 , , 1
1- 01 O 1, 1 ,,,,, 1 0402 To POWERAMF SFRfisfisgzmy 1 F501 1
3 P51 1 1 1 1 2066 MgTING 11 1\ 7 7 1 1 1
1 <1 1 1 4-1-1 > 491 1
E IN 0 1 1 1 1K 1 1 + 1 SPEAKERS
5 LINEI 1 j 1 1 PROTECT 1 , , '-1® 1 B
_ mm." C MOTORDRIVE """ ' 05251526 ELM RELAV "
g 0451 05511552 DRIVE DRIVE 1
.1 TA7291S 0591 12592 1
0 1
I z 1 1
LINE 2 IN 0 3 > 1 1 1 1 11 / 1
5 2 s1 3s 5 0 < m
1 TUNL § + E E % fi
1 g I VOLTAGOEQIQREGURATOR 1
0'" é) HE02 E +12v ,Izv 1-1 53 D91 9123 1
TAPEZ 3 1 1
A
1" (1) PLA 2 1,: E 1 1 1
-12v 1-1-1
1 19 42v .33 1:5 , 1 1 THERMAL
1 1-1 _ V 1 SENSOR 1
1 : 5TB 0922 13 w .111 1 1 0855 1
1 w 1 1 1
1 : CL 1a #4 1 E ''''''' J
1 0915 C916 1
1 g 6 1
D 7 1
1 92° 3 0911 1
1 1
_ _ _____________ _ ___ _ _ _________________ J >MDCtypaor11y
1 RDSCLK 1 1, 7 7 ,1 > MPF Iype only
-1-m 1 1 7,,
1 1 77777777777777777777
_1-17101' 1 1 1 MNNTJSANS' PRIMARV
1 TU»L 1 1 1
FMIAM(RDS) TUNER uNIT 1 1 1 1 g P11111331
1 1 1 1 7 7 1
-Ifimssr1r > 1 1 a K 1
1 1D, 1 1 1 W1
:mgg 12 Q7176 1 1 1 1 , ,
-1-~ 1 1 1
1 1 1 1
1 1 1 1 m
1 1 1 1 3 F903
1 1 1 1 g
1 1 a
1 1 E
1 1
1 1 SUB TRANS.
1 1 T902
1 1
1 1 -1
1 MAIN MICFIOPHOCESSOR 1
1 0501 POW 1 0912
v_o M30622MWF 1 \ ®
a. 1, RI +5V70PU 07m 1
1 W/ 15v MPU 1 m 1
BACKUP 50709 1
IRIN _0- w 1 C704 1
o 1
1 1 1
IR ouT Mow 1
L 77777777777777777777777777777777777777777777777777777777 1
17 7777777777777777777777777777777777777777777777777777777777777777777777777777 V 7 V 7 7 fl 7 7 '1
1 STA é DISPLAY CONTROL 1
1 Noav REMIN 1
1 , LEDsTEv 1
5: FL DISPLAY 'VF 1
1 REMOLE'SFNSOR 0352 FLACI 1
1 FLACZ 1
11 1
1 , HST 1 11 1
1 c : FL DFHVEFI +5v CPU 1
1 CLK 0951 1
1 $- M56005 1
1 1 ' ' ' 1
1 1) 1 CONTROL KEYS 1
1 <2 1 1
1 1 o o o 1
1 EvINTo «1 <1 1 1
1 KEflNTI 1 o o o 1
1 KEVINT 1 1
1 1