TX-SR505/505E
Ref. No. 3987
032007
SERVICE MANUAL
AV RECEIVER
MODEL
TX-SR505
MODEL
TX-SR505E
MASTER VOLUME
STANDBY/ON
STANDBY/ON
REMOTE MODE
RECEIVER
TAPE/AMP
DVD
M D/CDR
INPUT SELECTOR
1
VCR/DVR
2
CBL/SAT
3
6
DVD
CD
DOCK
4
AUX
5
MULTI CH
TV
7
TAPE
8
TUNER
9
CD
VCR
12
CABLE
10
11
+10
D TUN
0
ENT
DIMMER
CLR
SLEEP
SAT
--/---
TV
INPUT
GUIDE
TOP MENU
VOL
DISC
ALBUM
CH
VOL
PREVIOUS
MENU
SP A / B
MUTING
ENTER
TUNING
PRESET
PLAYLIST/CAT
PLAYLIST/CAT
STANDBY
SETUP
RETURN
LISTENING MODE
STEREO
SURROUND
MULTI CH
DVD
VCR/DVR
CBL/SAT
AUX
TAPE
TUNER
CD
SETUP
ENTER
RETURN
AUDIO
SUBTITLE
RANDOM REPEAT
TEST TONE
CH SEL
PLAY MODE
DISPLAY
L NIGHT
VCR
DVD
CINE FLTR
AUX INPUT
PHONES
SETUP MIC
VIDEO
L
AUDIO
R
LEVEL-
LEVEL+
A
SPEAKERS
B
TONE
STEREO
LISTENING MODE
DISPLAY DIGITAL INPUT
DIMMER
MEMORY TUNING MODE
CLEAR
HDD
RC-681M
TX-SR505 Black, Silver and Golden models
B MDD, B MDC, S MDC 120V AC, 60Hz
B MWO, S MWO
120/220-240V AC, 50/60Hz
S MGK, G MGK
220-230V AC, 50/60Hz
G MWT
120/220-240V AC, 50/60Hz
G MGQ
220-230V AC, 50/60Hz
TX-SR505E Black and Silver models
230V AC, 50Hz
B MPP, S MPP
B MPB, S MPB
230V AC, 50Hz
SAFETY-RELATED COMPONENT
WARNING!!
COMPONENTS IDENTIFIED BY MARK
ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
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.
RC-681M
TX-SR505/505E
EXPLODED VIEWS-1
P901
A097
A060
<Notes>
U14 : <MDD, MDC, E MPP> Only
P6601A : <MWO, MWT, MGK, MGQ, E MPP> Only
A061
x 6 pcs.
A046
A102
U12
U14
P6601A
x 14 pcs.
U13
A037
A109
<MDD, MDC> Only
A039
P101
F6901
A093
U15 A039
U01
A031
U08
A013
x 7 pcs.
U02
A075
A030
x 4 pcs.
A033
T901
A029
A028
F6902
A018
Refer to
EXPLODED VIEWS-2
P692
A022
P691
U11
A044
A039
A074
x 8 pcs.
A043
x 2 pcs.
A075
U04
A048
U03
A043
x 2 pcs.
A044
x 2 pcs.
A041
A039
A012
x 2 pcs.
U05
U06
A072
A050
A040
A042
A044
A011
x 6pcs.
P701
A001
A072
<MWT, MWO> Only
F901C F901
U07
A057
A056
A073
A055
A003
A027
A017
x 2 pcs.
A020 A016
x 2 pcs.
A021
x 4 pcs.
U09
A065
x 4 pcs.
A068
x 4 pcs.
A066
x 4 pcs.
A071
TX-SR505/505E
A002
x 5 pcs.
A083
A077
A089
x 3 pcs.
TX-SR505/505E
EXPLODED VIEWS-2
Q6050B
x 6 pcs.
A049
x 14 pcs.
Q6056
Q6066
Q6055
Q6065
Q6054
Q6064
Q6053
Q6063
Q6052
Q6062
Q6051
Q6061
Q6050
Q6060
Q6050A
x 2 pcs.
TX-SR505/505E
TX-SR505/505E
A
B
C
D
BLOCK DIAGRAMS-1
AUDIO SECTION
TUNER UNIT
L
40
59
MAIN R
MAIN L
SUB L
1
MIC AMP
R
60
SUB R
L
SETUP MIC
(FRONT)
L
AUX INPUT
(FRONT)
R
61
37
36
Q5503
R
MIC DETECT
FL
73
INVERTING
FR
62
L
CD
INVERTING
74
2
TAPE OUT
R
75
L
R
55
L
TAPE IN
R
56
SL
53
78
54
SR
32
76
L
CBL/SAT IN
R
SW
49
L
VCR/DVR OUT
R
L
VCR/DVR IN
R
48
L
FRONT
R
CENTER
DVD (MULTI IN)
SUBWOOFER
L
SURROUND
R
72
SBR
45
46
71
28
50
SBL
REC L
REC R
C
30
77
33
31
79
29
80
3
47
4
L
SURROUND BACK
R
TX-SR505 <MDD, MDC>
TX-SR505E <MPP> Only
67
IN1
Micro
Controller
68
HDMI
SW
FR
HDMI
LPF
LPF
LPF
C
IN2
FL
OUT
32
33
31
30
1
5
DIGITAL
COAXIAL
2
1
OPTICAL
2
OUT
-
-
14
13
15
16
2ch ADC
Q341
DIR
36
37
LPF
TX-SR505/505E
E
F
G
H
Q5501
R2S15211FP
SELECTOR / VOLUME
PHONES
POWER AMPLIFIER
19
TONE
+
FL
+29dB
L
RELAY
17
TONE
FR
+29dB
FRONT SPEAKERS
R
73
25k
+
7
C
MUTING
+29dB
25k
CENTER SPEAKER
+
74
25k
RELAY
14
SL
+29dB
L
SURROUND
SPEAKERS
+29dB
25k
75
25k
+
Q5630
SW
SR
30
77
25k
25k
12
R
+
+29dB
33
25k
9
RELAY
L
SURROUND BACK
SPEAKERS
R
78
25k
SBL
32
25k
4
SBR
+
76
25k
+
+29dB
L
RELAY
31
25k
2
SBMUT
FRONT
SPEAKERS B
R
79
29
25k
25k
AMUT
FRL
CSRL
SBRL
Z2RL
+
80
28
25k
25k
PREOUT
SUBWOOFER
RI
INTERFACE
RI
Q701
M30624MHP
MICROPROCESSOR
LPF
LPF
LPF
LPF
LPF
SBR
SBL
Q282
ES29LV400
4M Bit
FLASH MEMORY
SW
Q281
M12L16161A
16M bit
SD_RAM
SR
SL
34
29
26
22
35
27
23
28
21
20
8ch DAC
Q201
D707E001BRFP250
DSP
Q301
CS42518
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