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DTR-7.8
Ref. No. 4016
Jun, 2007
SERVICE MANUAL
AV RECEIVER
MODEL DTR-7.8
On Standby
TV
Input
DVD VCR/ DVR CBL/ SAT
1 2 3 +
Game / TV AUX 1 AUX 2 TV CH
4 5 6 -
Tape Tuner CD
7 8 9
Phono D.TUN TV VOL
+10 0 Clear
--/ --- 10 11 12
Input Selector
Macro
1 2 3 Zone 3
Remote Mode
DVD VCR CD Zone 2
CDR/MD
TV Cable Dock Receiver
SAT Tape/AMP
Dimmer Sleep
Me
M enu nu
To p
+
CH
Disc Enter VOL
Album
-
Gu
id e E it
x
Prev Se rn
CH tu u
p Re t
Disp la y M u t in g
Rec Playlist Random
Listening Mode
Stereo Surround
Repeat Audio Subtitle Play Mode
Direct THX All ST
Test Tone CH Sel Level - Level +
Open/Close Video Off
Audio Sel L Night Re-EQ
VCR DVD HDD
RC-691M
RC-691M
Black model
B UDD, B MDD 120V AC, 60Hz
B UMA, B MMA 220V~240V 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.
DTR-7.8
A079 A114
EXPLODED VIEWS-1 U27
A112 x 6 pcs.
A094 x 3 pcs.
A118
A116 A112 x 2 pcs. A410
x 55 pcs. U25
A114 U28
x 2 pcs. A110
U42
A400
A119 A096 A414
Refer to
U017 P101 in A270 A412
A119 x 2 pcs.
P205 A104 EXPLODED VIEWS-2
U14 U43 U12
F2501 A013 P2801 P7501
F2502 x 2 pcs. A013
A112 x 2 pcs.
A137 A013 U38
A261 x 2 pcs.
U08 A013 U37 U40
x 13 pcs. A013
U07
U31 x 3 pcs.
P102 A100 A251
U30 A203
DD Type Only A090 A301
A013
U06 x 4 pcs.
U26 U33
U32 U10 U34 A259
A076
U09 x 4 pcs. A092 A013 U35
A013 A098
F9101 A201
P6800 U11 A013
x 18 pcs. F9102 A067 x 2 pcs.
A263 A253
A013 A255
F9000 x 3 pcs. A087 A087 A281
A086 A304
A066 A013 x 4 pcs.
F9100
A106 x 5 pcs.
A105
A120
A013
x 3 pcs. A112
U13 A070 x 6 pcs.
x 4 pcs.
A112
DTR-7.8
A068 A112 x 5 pcs.
x 4 pcs. x 2 pcs.
A112 A075 A078
x 4 pcs. x 3 pcs. x 3 pcs.
DTR-7.8
EXPLODED VIEWS-2 A009
A058
x 16 pcs.
T901
Q6092 A056
Q6064 x 4 pcs.
U04 Q6094 Q6062
Q6096 A120
Q6066 Q6080A
A009 Q6091 U17 x 2 pcs.
x 12 pcs. A007 Q6061 A021
x 4 pcs.
U05 A005 Q6052
x 4 pcs. Q6082
Q6090 Q6054
Q6065 A001 A013
Q6084
Q6095 Q6060 Q6086 x 6 pcs.
Q6063 Q6056 A062
Q6093 U16 Q6081 A022 A048
A007 Q6051 A021
x 4 pcs. P062
Q6050 Q6050A
A005 Q6080
x 4 pcs. x 2 pcs.
Q6055
Q6085
Q6083 Q6053 A001
A044
A120 F6601 A022
A040
F6602 A046
F6603 A042 x 4 pcs. A049
A004 x 4 pcs.
A014 F6604
A011 A013 F9301 A090
x 2 pcs. x 4 pcs.
A013
A013 x 2 pcs. P061
x 2 pcs. U36
A013 A018
U02 x 7 pcs. U22
U20 A064 A120
A013
U23 U19 x 2 pcs.
U18 U24 A013
U21 x 8 pcs.
A060
x 2 pcs.
A022
A022
A013
x 4 pcs.
U01
A013
x 3 pcs.
A013
x 2 pcs. A120
U03 A015
DTR-7.8
A025
A013
x 2 pcs.
DTR-7.8
A B C D
BLOCK DIAGRAMS-1 AUX 2
Analog Switch Array
Q4029
VIDEO IN
AUDIO SECTION R L
SETUP MIC
1
TC94A46CFG
2
FM
3
ANTENNA
Analog F
Sw
AM ANTENNA TUNER UNIT
ch2
Q4
1 NJU7312A MAIN A NJU
MAIN L
(DD Type Only)
XM ch3 MAIN B DAC FL
MIX L
Sirrus
MAIN R
L DAC FR
CD ch4 MIX R
R
MCH C
-6dB
-6dB
DAC C
L . .
PHONO RIAA ch5
R .
. .
.
L R MCH SW
DAC SW
L
TAPE ch6
R Z2
MCH SL
DAC SL
0dB
0dB
L
TAPE OUT ch7
MCH SR
R
2 L
AUX 1 ch8
R
Z3
L
Analog Function Switch
GAME/TV ch9
Q4305 NJU7313A
R
Video REC
ch10
L
CBL/SAT ch11
R
MCH_SBR
MCH_SBL
DAC_SBR
DAC SW2
DAC_SBL
MCH_SW
MCH_SR
DAC CT2
DAC_SW
MCH_CT
MCH_SL
L
DAC_SR
NJU7313A
DAC_FR
DAC_CT
DAC_SL
DAC_FL
VCR/DVR OUT Analog ch12
R Function
Switch
L
V_OUT_R
V_OUT_L
VCR/DVR IN ch13
3 R
L
DVD ch14
R
FL
MULTI CHANNEL INPUT
FR
C
SW
SL
SR
SBL
SBR
4 I2S
IN 1
-6dB
-6dB
I2S/DSD
IN 2
HDMI HDMI I2S (DVD audio,etc)
IN 3 I/F
TC74VHC157FT
SPDIF DSD
MULTIPLEXER
OUT
TC74VHC157FT DSP BLOCK
OPTICAL IN 1 1st DSP Q3401 D790E001BZDH or
D710E001BZDH
OPTICAL IN 2 FLASH ROM I2S
2nd DSP Q3501 D788E001BRFP or
D708E001BRFP
DIGITAL IN DSD
(FRONT) 3rd DSP Q3601 D707E001BRFP
OPTICAL OUT SD_RAM
5 COAX IN 1
RX0
COAX IN 2 ADC
COAX IN 3
RX5
RX6
RX7
DIR
Refer to SCHEMATIC DIAGRAM-9 and -18 (SD-9 and SD-18) Q3041
for digital audio signal flow wave forms. CS42516
DTR-7.8
E F G H
7 ch Power
Amplifier
alog Function 8 ch Analog HEADPHONES Speaker Terminals
Switch Volume Control 1
2
3
Q4304 Q4405 +29dB
NJU7312A CS3318 FRONT LEFT
AIN L
AC FL
IX L FL
+29dB
FRONT RIGHT
AIN R
AC FR
IX R FR
CH C +29dB
AC C
C CENTER
H SW
SW
SW +29dB
+20dB
SURR LEFT
CH SL
C SL SL
+29dB
SURR RIGHT
SR
+29dB
SBL SURR BACK
or Bi-AMP LEFT
+29dB
SURR BACK
or Bi-AMP RIGHT
SBR
ZONE2 LEFT
Q4306 ZONE2 RIGHT
NJU7311A
.
0dB FIX ZONE2 PREOUT/LINEOUT
0dB FIX PRE OUT
TONE
L
L
0dB FIX
R FRONT
0dB FIX TONE R
SW
CENTER
SUBWOOFER
ZONE3 PREOUT/LINEOUT
L L
SURR
R R
SW L SURR
R BACK
Q4204 R2S15211FP
12V TRIGGER OUT A
12V TRIGGER
CONTROL
12V TRIGGER OUT B
12V TRIGGER OUT C
SW2
SBR
SBL
SW
SR
FR
C2
SL
FL
IR IN A
C
IR
Remote Sensor IR IN B
IR OUT
2S Q3721
Q3701 Q3741 Q3761 Q3781 RI
SD PCM1796 PCM1796 PCM1796 PCM1796 Interface RIex
PCM1796
DAC DAC DAC DAC DAC
RS232
Interface RS232
.
.
.
.
Q7001
M3087BFKBGP
Main Microprocessor
TC74VHC157FT MULTIPLEXER
E-CONTROL BOARD
NALAN-9268(SD-17) ETHERNET
(E-CONTROL)
DTR-7.8
A B C D E F G H
BLOCK DIAGRAMS-1 AUX 2
Analog Switch Array
Q4029
VIDEO IN
AUDIO SECTION R L
SETUP MIC
1
TC94A46CFG
FM
2 7 ch Power
ANTENNA 3
Amplifier
Analog Function 8 ch Analog HEADPHONES Speaker Terminals
Switch Volume Control 1
AM ANTENNA TUNER UNIT 2
ch2 Q4405
3
+29dB
Q4304
1 NJU7312A MAIN A NJU7312A CS3318 FRONT LEFT
MAIN L
(DD Type Only)
XM ch3 MAIN B DAC FL
MIX L FL
+29dB
Sirrus
FRONT RIGHT
MAIN R
L DAC FR
CD ch4 MIX R FR
R
MCH C +29dB
-6dB
-6dB
L . .
DAC C
C CENTER
PHONO RIAA ch5
R .
. .
.
L R MCH SW
DAC SW
SW +29dB
L SURR LEFT
TAPE ch6 +20dB
R Z2
MCH SL
DAC SL SL
0dB
0dB
L