Please Print All pages and give to Service TECH. It will save time repair unit
List of info
(
If you have problem to find parts number in service manual ! and parts Availability
Go to service Web under service Ducumrnts on the unit . click open General information
than click open Onkyo Parts Look-up method )
Thermal Sensor Problem Unit shut down in 3 sec,5 min, 10min..(check page 6, 13 and 14)
1.(2,3) Input work Digital lit on display, No audio output to speakers. (Tips can be use for all Unit)
2.(page 4,5) Switch intermittant. Standby light is ON but set will not power ON ( DVD or Receive)
3.(page 6 )GENERAL CHECK LIST FOR INTERMITTANT operation or NO AUDIO ,VIDEO
4. (Page 7 to Page 10 ) MONITOR OUT NOT WORKING (TXSR603X)
5. (Page 11 to page 12) Relay constantly clicks, won’t power ON Only sound TiTa TiTa
6.(13,14)General troubleshooting for Protect problem. (Unit may turn off in 1 sec,3 sec 5 min,10 min,15 min...)
7. ( Page 15 to Page 17) Basic DSP circuit
8. (page 18 to page 21 ) Subject: Troubleshooting tips for the Microprocessor and Audio Select IC
9. (page 22 to page 25 ) Sample : DIGITAL AUDIO WAVE FORM SECTION
10. (page 26 ) Subject: Unit Displays “Auto Speaker Setup” and locks up.
11.(page 27 to 34)Service on audio input and DSP board Sample (TXSR504, HTR 540)
remove screws at back pannel side and sub power board. front break.
Remove bottom chassis set unit as picture you can test and check replace parts.on amp board.
CONFIDENTIAL
TIPS & TRICKS
18 Park Way, Upper Saddle River, NJ 07458
No. 20070724
Date:
_____________________________________________________________
Model: DTR-4.6 (for ALL unit service info )
Subject: Input work Digital lit on display, No audio output to speakers.
Symptom: Use DVD RCA audio input, no audio signal at Pin 4,5,6,7 at P3101B.
(Check with Scope should have 2.5 V DC with 0.2 V pp audio
** USE SCOPE TO CHECK **
Missing Output from pin 8 to pin 15 on P3101B digital out Should be
0 V dc with 0.4 V pp) o v
0.4 v pp
Solution: First check microprocessor Q701 control signal output. (5 V. )
5 V R267, R268 VOLSTB and VOLCLK should have 5 V dc with
0 V 5 V pulse down to 0 V when adjust volume control. ( also at P3105B)
R659 VOLDAT should have 0 V dc with 5 V pulse when adj volume.If low
Remove pin 58,59,60 On Q3003 if pulse was low. To check control signal back
Up to 5 V. If control signal still low Q701 may be def.
If yes have 5 V pulse Q3003 was leaking Replace new IC.
Next check +7 V and – 7 V power supply on Q3003 and Q3009.
Remove XM Radio NARF-9688 and VIDEO Board NAVD-8657 .
Check R3127 right side Reg Q3005 out pin 1 should be + 7 V. If low or +2.5 V
Q3003 or Q3009 may be leaking. Remove pin 19 or VCC pin 39 on Q3009 and
Check. Same as Q3006 out pin 3 ,Right side R3128 should be – 7 V. if low
Replace def. Q3003 or Q3009.
If control signal is good CD audio signal go in to Q 3003, +7 v
And – 7 V all good but no ADRT-,ADRT+ , ADLT- and ADLT+ audio out
Replace Q3003 input select IC.
0.2 V pp
Check next page !
July 24, 2007
______________________________________________________________________________________
This document and the information it contains is intended for the exclusive use of Authorized ONKYO Service Centers and their employees.
This document may contain information that is privileged, confidential and exempt from disclosure under applicable law and terms of the
ONKYO Service Agreement. Any dissemination, distribution or copying of this document and the information it contains is strictly
prohibited.
CONFIDENTIALITY NOTICE:
CONFIDENTIAL PLEASE Print ALL Page
It will save Tech time Fix unit.
Technical Tip
18 Park Way, Upper Saddle River, NJ 07458
Date: September 12, 2005
__Switch Problem May find in any DVD ? Receiver too !!_____________________________________________
Model: DV-CP701/CP702 ( Info May use on other DVD )
Subject: Standby is light is ON but set will not power ON (power on Tray move itself)
Symptom: The Standby light is ON but the set will not power ON when the Standby
button is pressed. (some unit power on or play disc T ray will open close itself)
(Check Voltage with Scope int leaking switch May not show on ohm test )
Solution:
Reset circuit to confirm that it is operating normally and crystal OSC (X801) to verify
that it is on frequency and supplying 2.5V to 5V pk to pk. If these items are normal
check the voltages on the DISPLAY board at KEY0, KEY1, KEY2 and KEY3. The
voltage at KEY0 through KEY3 should read 4.9V ~ 5VDC. If any of the KEY voltages
read low check the associated momentary KEY switch to see if it is stuck in a closed
position. If the switches check good, check the DISPLAY board capacitors C827, C828,
and C829, to see if any are shorted or leaky. Replace any defective parts and re-test.
If Switch is leaking replace the Bad switch.
Pin # & Desc. Standby Unit with power ON Remove CN2 cable
10 EV +12V +12 V +12V 12 V
1 P-con -- -- 1.5 V
11 GND -- -- -7 SW +8V 0 +8V 3.3 V
8 SW +8V 0 +8V 0 V
9 GND -- -- 0 V
4 SW+5V 0 +5V 4.4 V
2 EV+5V +5V +5V 5.22 V
6 SW+3.3V 0 +3.3V 3.42 V
3 GND -- -- -5 GND -- -- -12 EV-12 -12V -12V -12 V
13 EV+30V -29V -30V -28 V
14 FLAC -22V -22V -21 V
15 FLAC -22V -24.5V -21 V
______________________________________________________________________________________
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employees. This document may contain information that is privileged, confidential and exempt from disclosure under applicable law
and terms of the ONKYO Service Agreement. Any dissemination, distribution or copying of this document and the information it
contains is strictly prohibited.
Check and verify the power supply voltages at connector CN2. Check the
( 25035718 ) NPS-111-S6 81 go to nex t page.
Voltage reading at CN2
CONFIDENTIALITY NOTICE:
When Power board was good Standby Lit Unit can not turn on power.
Use scope check Display board U3 P804A
When K0,K1 or K2 Voltage much lower than 5 V. Microprocessor lock up
Unit will have no function.
If K0,K1 or K2 line Lower than 5 V. First check all switch not lock in.
Remove U8 and U9 PCB from U3 Display board . If K0,K1 and K3
Voltage low than 5V.(2V to 4V) Replace display board.U3 NADIS-7808.
When you have 5 V after U8,U9 removed check any K0,K1 or K3 line Voltage
lower than 5 V when you connect U9 orU8 (U7) board back to U3. Replace that board.
Or check out Def. Push switch and replace. 25035718 NPS-111-S681 If SW was leaking
P804B Good Unit Bad Unit no power on TRAY in and out
Standby Lit power on Standby lit only When playDisc
USE Scope to check
Y ellow KEY 0 + 5 V + 5 V + 5 V + 4 V + 5 V
Blue 0 V 0 V 0 V 0 V 0 V
Blue E of f Q906 0 V 4 .3 0 . 5 V 0V or 2.8V +2. 8 V
Blue 0 V + 5 V 0 V 0 V 0 V
Blue KE Y 1 + 5 V + 5 V + 5 V + 5V Int. + 5 V to 4V back 5 V & 4V
( Show on Scope Change Voltage )
P805B U9 Standby SW PC
KE Y 2 + 5 V + 5V + 4V or lower
remove one side solder on switch one by one and check that line scope show lower than 5 v.
when the voltage will back to 5 v DC. the switch was bad change this switch . test play and check again.
702 701
** When the Push SW intermitter leaking. Unit may turn power on itself, change function.
Any K0,K1,K2..voltage lower than 5 V Unit microprocessor will lock up. Waitting the Voltage
back to 5 V ! ! pressor switch will not work!!
READ ALL INFO IT WILL Help Y ou Save Time
Please print out circuit which you work on write down voltage you check. TechEmail
to us all info When you need us to help ! Give us model # and Ser:# Customer
info and problem. ( Always use scope to check)
When THRM line Voltage too low 0.1V or too high over 2.5V.Unit go Thermal protection in 3 sec.
GENERAL CHECK LIST FOR INTERMITTANT operation or NO AUDIO ,VIDEO
1. What is idling current on each channel? Adjust and test. (If Idling adj. not change !
replaces surrounding transistors and idling adj. resistor.
2. What was customer setup on speakers level? If too high reset unit and test.
(It will over drive amp. When input signal go high unit will go protection)
3. What is each channel voltage from ID+ to chasses ? Good Unit about 0.04V
If a channel ID+ voltage much higher than other. Replace the two input transistors
(use same transistor) at driver circuit. It will drop this voltage down.
4. Use scope check do you have DC in any audio line ?
( When adj. volume up or down. Press and change input bottom) If yes find def. parts
IC mutting transistors.
5. What is voltage on IPRO ( PROTECT) Use scope ? Check transistors it may leak.
6. What is voltage on THERMAL line ? Check transistors it may leak ( delay act. Some unit
5 sec, some unit act in 5 min. some 10 min or more. To turn unit to Thermal protection)
Unit use TXSR XXX LM61CIZ Thermal Sensor. THRM line about 0.95V if unit turn on
and 1.5V. Unit will go Thrmal protiction in
7. Check power supply to all DSP IC . Use scope check voltage and noise!
a. If unit audio work intermittent .Warm up lost audio. Check +5V,+3.3V and +2.5V if
Low down and noise! Check Rag IC . Some unit is in amp board. Not in DSP board.
Add more thermal joint compound and test.
8. When you have audio signal go in to a IC but no output.
a. check you have good power DC supply to this IC ?
b. do you have good control data from microprocessor to the IC ?
15 min. replace this sensor !!
microprocessor. ( If microprocessor not available than replace PCB. some unit in
CONFIDENTIAL
TIPS FOR SERVICE
18 Park Way, Upper Saddle River, NJ 07458
No.
Date:
_____________________________________________________________
Model:
Subject: TX-SR 603X
Symptom: MONITOR OUT NOT WORKING
Cause: Procedure for service: INITIAL SETUP ON COMPONENT VIDEO
DVD IN 1
VIDEO 1 IN 2
VIDEO 2 IN 3
NEXT PAGE ==== WITH OUT VIDEO INPUT SIGNAL, ==== WITH VIDEO INPUT SIGNAL.________________________________________________________________________________
This document and the information it contains is intended for the exclusive use of Authorized ONKYO Service Centers and their
employees. This document may contain information that is privileged, confidential and exempt from disclosure under applicable law
and terms of the ONKYO Service Agreement. Any dissemination, distribution or copying of this document and the information it
contains is strictly prohibited.
CONFIDENTIALITY NOTICE:
CONFIDENTIAL
SERVICE TIPS
18 Park Way, Upper Saddle River, NJ 07458
No.
Date:
_____________________________________________________________
Model:
Subject: TXSR603X VOLTAGE INFO ON P2004 AND P2005 IN DSP BOARD
OSDDA +5 V WHEN PRESS VIDEO
OSDCS 0 V 5 V DROP TO 0 V
OSDCK + 5 V
VCL FSWCLK +5 V PLUSE scope at 20us 5 V
VDATA FSWSDD + 5 V PLUSE
VSTB FSWSTB + 5 V
VGND 0V
+5VVD +5 V If missing 5 V no video.
V4Y 0 V
-5VVD - 5 V power for video circuit.
V4C 0 V
-12 V - 12 V for video circuit Q2111.
V4V
+12 V + 12 V for video circuit Q2111.
GND 0 V
VSYNC +5V SCOP AT 5ms
SYNCDET
ISS 0 V
DSA 5 V
SCL 5 V
VDRST 0
VMUT 5 V WHEN PRESS VIDEO SELECT DROP TO 0 V and back 5v
RL 1 5 V ACT
RL 2 5 V ACT
RL 3 5 V ACT
RL 4 5 V ACT
If missing red control pluse Q701 microprocess may be def. if audio switch ok . 5 v pluse should be good.
scription
When missing +5 VVD check U02 NAAF-8523 Q5654 , Q5650 and Q5653 +12 power supply.
use DVD RCA video input no monitor video out.
check Q2111 pin 1 -12 v pin 30 + 12 V, pin 14,16 and pin17 have 5 v pulse when press DVD, Video1 than DVD.
with viode signal connect input !! pin 29 should be 0V, pin27 R-S3 +5V, R-s4 -5v, R-S5 -5v, R-s6 +5 V
R-S7 +5 V , R-S8 - 5V, R-S1 5V and RS2 5V.
When Q2111 is good power supply is right.control pluse ok 5 v. missing R-S3 5 v replace Q2004
DVD viseo RCA signal in to Q2001 pin3 out from pin1 to Q2012 E. when R-S3 is 5 V . Video go out to Monitor
0 V
0 V NO VIDEO INPUT.+5 V WITH VIDEO INPUT SIGNAL. AT SEL VIDEO.
6/19/07
______________________________________________________________________________________
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employees. This document may contain information that is privileged, confidential and exempt from disclosure under applicable law
and terms of the ONKYO Service Agreement. Any dissemination, distribution or copying of this document and the information it
contains is strictly prohibited.
CONFIDENTIALITY NOTICE:
CONFIDENTIALITY NOTICE:
The content of this Bulletin is Confidential Information as defined in the applicable Independent Service Center
Agreement. It is for the exclusive use of Onkyo Authorized Service Centers. Republication, dissemination or
posting of this Bulletin on the internet or in any blog is strictly prohibited.
Q2111 TXSR603X Video circuit Check list
DVD Video 1 Video 2 Video 3 Video 4
Pin 27 R-S3 no with +5v
video video -5v
input signal
Pin 26 R-S4 signal input
- 5v
Pin 24 R-S5
- 5v
Pin 23 R-S6 +5V
5v
Pin 21 R-S7
-5v
Pin 20 R-S8 - 5v
+5v
Pin 29 R-S1
0v
+ 5v
Pin28 R-S2
-5v
Pin 14 STB 5 v when press DVD , Video 1 ...
Pin 16 CLK 5 v pluse when press DVD, Video1...
Pin 17 DATA V pluse when press DVD, Video 1....
Pin 1 - 12 V
Pin 2 + 5V DVD 0 V video 1 to video 4
Pin 30 + 12 V
Missing +12 V - 12 V Q2111 will not work. Missing Video +5v and - 5V
Check Q5654,Q5651,Q5650. Q5655,Q5652,Q5653.
When Q2111 and STB,CLK,DATA are good missing 5v R-S3 check Q2004.
CONFIDENTIALITY NOTICE:
The content of this Bulletin is Confidential Information as defined in the applicable Independent Service Center
Agreement. It is for the exclusive use of Onkyo Authorized Service Centers. Republication, dissemination or
posting of this Bulletin on the internet or in any blog is strictly prohibited.
CONFIDENTIAL
Check from pin 11 S3GND to pin 14 and 13 About 10V AC Same as
SEC2-1 and SEC2-2 on JL9501A or JL9501B also P9502A and P9502
AC input to D9005 on U05 NAAF-8523 Board. When you lost any AC
SEC2-1 or SEC2-2 lost +12V to Reg IC Q5640.
Unit will have Tip Ta Tod relay sound . Power will not turn on.
Please print
Technical Tip
18 Park Way, Upper Saddle River, NJ 07458
Date: May 25, 2006
_____________________________________________________________
Model: HT-R330
Subject: Relay constantly clicks, won’t power ON Only sound TiTa TiTa
Symptom: The relays click but the set will not power ON.
Solution:
Lost + 12 V to Reg IC Q 5640 Unit will not turn on.
Also TXSR 503, HTR530
Unit go to Tip Ta Main Relay on and off ..on and off in 3 sec after power on. POWERD line
and +10S line change up and down.
A. If audio output damage power circuit Fuse , fuse resistor open. B + B - Leaking to gound.
B . Power transformer def. or connection from main transformer to power supply circuit open.
Check Fuse resistor R9532 0.22 ohm 1/ 2 W for an open condition
______________________________________________________________________________________
CONFIDENTIALITY NOTICE:
This document and the information it contains is intended for the exclusive use of Authorized ONKYO Service Centers and their
employees. This document may contain information that is privileged, confidential and exempt from disclosure under applicable law
and terms of the ONKYO Service Agreement. Any dissemination, distribution or copying of this document and the information it
contains is strictly prohibited.
CONFIDENTIAL
When output check all good.
unit go to protect in 3 sec.
check Thermal line over 2.5V
Thermal sensor was def.
Thermal line over 2.5V. go
protect in 3 sec.
<<<<<<-----------------
Output is good and
protection line high
check def. pro. detect
transistors.
Check ground screw
missing GNDDG
ground ,Thermal
voltage lower than
normal. unit will go to
protection.
***When all circuit check good Unit still go protection some time !! ***
Check customer Setup on unit ! Speaker lever setup is for balance surround sound . Not for more power
on speaker !!! Best set Center channel speaker at 0 db. other speaker set to +3,4 db or -db.
When set speaker lever high, it over driver amp circuit ( volume set low or high). It will intermittently set unit
to protection.( When noise input or input signal high)
Please check this first write down what you check ! Ask customer reset speaker lever low !!
Technical Tip
18 Park Way, Upper Saddle River, NJ 07458
Date: May 25, 2006
_____________________________________________________________
Model: HTR-330/530, TX-SR303/SR503 (Sample for all Unit)
Subject: General troubleshooting for Protect problem.
______________________________________________________________________________________
This document and the information it contains is intended for the exclusive use of Authorized ONKYO Service Centers and their
employees. This document may contain information that is privileged, confidential and exempt from disclosure under applicable law
and terms of the ONKYO Service Agreement. Any dissemination, distribution or copying of this document and the information it
contains is strictly prohibited.
CONFIDENTIALITY NOTICE:
1 . Normal audio using analog inputs. Do you have all Dolby surround sound ?
2 . All DSP voltages are normal ? Did all supply voltage go to all ICs ?+5vDSP, 2.5V,+3.3V...
+7v,-7V..
3 .Input sel IC. Use CD analog input audio signal (ADRT+,ADRT- and ADLT+,ADLT-) out to DAC IC ?
Surround analog signal out (DAC L,DAC R,DAC C,DAC SW,DAC LS, DAC RS ,DAC SB* back to Input sel.IC.
Pin 1 to pin8 out to p5504. ( Same as pre out) check Mutting transistors Q5600
to Q5617 .
4 . When use digital input signal did digital light up on display ?
If missing 3.3v,2.5v 5vdsp (on Reg IC Q5640) to DSP ICs will disable DSP function. (U05 Amplifer PC board)
Please use TX-SR502 as sample Technical Tip Troubleshooting.
When you need Tech help Please use Tech Email and give us Voltage and signal info. What voltage on DSP ICs
and whereyou lost audio signal ? What you have on input IC Data line
Check with TX-SR502 Troubleshooting tips for the Microprocessor and Audio Select IC
Check from pin 11 S3GND to pin 14 and 13 About 10V AC Same as ��SEC2-1 and SEC2-2
on JL9501A or JL9501B also P9502A and P9502��AC input to D9005 on U05 NAAF-8523 Board.
When you lost any AC��SEC2-1 or SEC2-2 lost +12V to Reg IC Q5640.��Unit will have Tip Ta Tod relay sound .
Power will not turn on.
����
Note: When Output transistor Def. short out E,B,C. the F901A B+ B- short
and F901A��will open. F6901 and F6902 may also open. Lost power supply�
This time press Standby / on Unit will only sound Ti Ta Ti Ta. .......
Based On TX-DS494
Analog signal processing method.
In many of the receivers X701 is turned ON
via control data, when source is analog
same IC often is utilized to perform the base
PLL frequency oscillation. L/R Clock
12,288mz/256= 48khz Q701 and its
surrounding components very easily
affected by to noise generated by power
supply or excessive grounding of the unit to
external devices. Always check and recheck
power supply regulators for least ripple or
H/F oscillation.
The most critical parts of the DSP besides the Base frequency oscillators, are the Flash-Rom's. These ROM's are often
configured in an 8-bit data bus mode, A failing or loose DSP Flash ROM's could trigger, data error in which DSP may
sound to break up and stutter do to mute ON-OFF. It may also mute indefinitely. It is recommended to check these
components very closely before assuming otherwise. Pins labeled A0~ and D0~ are often same DC level.
Does not
apply to US
models
L/R S/D
L/R S/D
L/R Clock 12,288mz/256= 48khz
Q801 DA/AD
Converter
S/D
AK4526A
Master Clock
Left
Right
Most DSP inputs are
configured in a
balanced input mode.
Q801 must have M/C and
Sampling frequency to work
properly. M/C is generated by
Q701 in most applications.
Input selector IC.
Analog source can be any of
the available inputs found on
the unit except multi-channel
input.
Left
Right
Most DSP design will incorporate a
local DC to DC regulator. It extremely
important to make sure the primary or
secondary DC have no H/F oscillation.
Page 1
CONFIDENTIAL
Technical Tip
18 Park Way, Upper Saddle River, NJ 07458
Date: November 9, 2005
_____________________________________________________________
Model: TX-SR502/SR8250, HT-R520
Subject: Troubleshooting tips for the Microprocessor and Audio Select IC
Symptom: The set produces no sound in surround mode, you cannot change the
LISTENING MODE from the buttons on the front panel or if the DVD mode is selected
you can only change from DTS to Stereo.
Solution:
outlined in previous tips and tricks publications. If the coil checks out OK, check for data
communication between Microprocessor Q7008 and the Input Select IC Q301. Use an
oscilloscope to check the microprocessors SELCK, SELDA and SLMUT data lines.
Check the Microprocessor side of R7043 for a +5V mute pulse (fig. 1) on the SELMUT
line when the front panel Listening Mode button is depressed.
First, check coil L7002 located on the Preamp board for an open condition as
fig. 1
______________________________________________________________________________________
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This document and the information it contains is intended for the exclusive use of Authorized ONKYO Service Centers and their
employees. This document may contain information that is privileged, confidential and exempt from disclosure under applicable law
and terms of the ONKYO Service Agreement. Any dissemination, distribution or copying of this document and the information it
contains is strictly prohibited.
Check SELCK at R7044 (fig. 2) and SELDA at R7045 (fig. 3) for +5V data pulses when
pressing the Listening Mode buttons.
fig. 2
fig. 3
If any of the microprocessors SELCK, SELDA and SLMUT data line pulses are not
generated when the Listening Mode buttons are depressed, check Q7008 for “must
haves”: X7001 oscillation (pins 69 and 70), Reset (pin 60), VDD (pins 7, 43, 68, 71, 74
and 75) and ground (pins 4, 33, 36 ~ 39, 63 and 67). Look for DC voltage on the SELCK,
SELMUT and SELDA lines. Under normal operating conditions, all three data lines
should have 0VDC present. If DC is found on any of the data lines you can locate which
IC is producing the DC voltage by checking resistors R7043, 7044 and 7045. If positive
DC voltage is found on either side of the resistor when no front panel buttons are pressed
remove the resistor from the circuit and read the open traces to see which IC is producing
the +DC voltage. The IC producing the +DC voltage is defective and should be replaced.
______________________________________________________________________________________
This document and the information it contains is intended for the exclusive use of Authorized ONKYO Service Centers and their
employees. This document may contain information that is privileged, confidential and exempt from disclosure under applicable law
and terms of the ONKYO Service Agreement. Any dissemination, distribution or copying of this document and the information it
contains is strictly prohibited.
CONFIDENTIALITY NOTICE:
Below are general test points to check when troubleshooting the Preamplifier PCB.
General Troubleshooting Test Points
______________________________________________________________________________________
CONFIDENTIALITY NOTICE:
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employees. This document may contain information that is privileged, confidential and exempt from disclosure under applicable law
and terms of the ONKYO Service Agreement. Any dissemination, distribution or copying of this document and the information it
contains is strictly prohibited.
Parts:
Ref# Description Part Number
Q7008 Micon, MPD784225GC-253-8BT 22242167R3
Q301 Audio Select IC, BD3817KS 22242117R3
X7001 Xtal, CSTCE12M5G52-R0 3010361R2
______________________________________________________________________________________
CONFIDENTIALITY NOTICE:
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employees. This document may contain information that is privileged, confidential and exempt from disclosure under applicable law
and terms of the ONKYO Service Agreement. Any dissemination, distribution or copying of this document and the information it
contains is strictly prohibited.
TX-DS787 DSP- COAX input:
Ref:COAX-0724
Coaxial1 input
267.9mv RMS
Signal loss
compared to
Coax2 input
Coaxial2 input
Equal Input Data Rate
58.27mv RMS
A unit having problem with one of COAX
inputs but not the other, technician may
assume a DSP problem. The above wave
form comparison test can be used to verify if
indeed the signal is reaching the intended
primary target. In this case,
the input at COAXIAL2 was loaded to the
ground by a defective Q8001at pin13. Pin 3
input of IC was OK and its RC components at
the input gates of IC8001 were fine. The
measurement was taken with the unit at
power OFF state. That is because the input is
passive components did not require to obtain
the above reading.
TX-SR674/674E/8467
A
SCHEMATIC DIAGRAM-12(SD-12)
DIGITAL AUDIO WAVE FORM SECTION
NOTE:
1.
WF01 is short for WaveForm01 .
1
2
2. Refer to SD-6(SCHEMATIC DIAGRAM-6) for details.
COAX1
COAX2
DIGITAL
OUT
OPT1
OPT2
OPT3
VCC
GND
VCC
GND
VCC
GND
VCC
GND
IN
IN
IN
IN
74HCU04F
Q131
1
13
9
R141
WF01
R142
R143
WF02
COAX1
4
R336
COAX2
10
R337
TX
6
OPT1
OPT2
OPT3
43
42
50
46
45
48
Q301
DIR
TO NAVD-8928 (SD-10)
WF03
SAI_SDOUT
54
R312
SAI_SLCK
61
R316
SAI_LRCK
60
R315
WF04
CS42518-CQ
LR CLOCK (SAI_LRCK, CX_LRCK)
BCD
P801A
1
3
4
7
2
5
6
PCMLR
PCMSLR
MCK_HDMI
PCMBCK
PCMCSW
PCMSBLR
PCMLRCK
14
SAI_SDOUT
12
13
11
SAI_SLCK
9
10
5
SAI_LRCK
7
6
Q181
WF05
TC74VHC157FT
MASTER CLOCK=128Fs or 256Fs
Fs=48kHz : DVD, Clock width=20.8us
Fs=44.1kHz : CD, Clock width=22.7us
TMS320D707E001
Q201
DSP
CX_SDIN1
113
138
137
135
120
139
141
CX_SDIN2
115
CX_SDIN3
116
CX_SDIN4
117
CX_SCLK
142
CX_LRCK
144
WF07
BIT CLOCK (SAI_SLCK, CX_SLCK)
64Fs=3072kHz : DVD, Clock width=325ns
64Fs=2822.4kHz : CD, Clock width=354ns
WF06
WF08
R254
R255
R256
R257
R267
R269
1
DAC
64
63
62
2
3
WF09
R411
DAC_OUTDAC_OUT+
33
32
30
31
37
36
29
28
26
27
23
22
20
21
34
35
R401
R412
R402
R413
R403
R415
R405
R416
R406
R417
R407
R418
R408
R414
R404
Q401
Q401
Q402
Q403
Q403
Q404
Q404
Q402
FL
FR
C
SL
SR
SBL
SBR
SW
WF10
AUDIO_FL
WF01
OPT1
4.0V
WF02
COAX1
5.0V
WF03
SAI_SDOUT
3.3V
3
Duty varies according to audio data
SAI_LRCK
WF04
3.3V
4
WF07
20.8us
CX_LRCK
3.3V
20.8us
Duty always varies according to audio data
SAI_SLCK
WF05
325 ns
WF08
CX_SCLK
325 ns
3.3V
3.3V
Duty varies according to audio data
CX_SDIN1
WF06
20.8us
WF09
DAC_OUT-
Analog audio wave form with aliasing noise
3.3V
2.8V
0V
AUDIO_FL
WF10
WF10
AUDIO_FL
5
2.8V
Analog audio wave form with aliasing noise
0V
Aliasing noise in no audio data
220mVp-p
TX-DS595, TX-DS696,
TX-SR500, TX-SR600,
TX-SR700
Based on TX-SR600
Condition is Analog with input
set for CD and mode is
surround.
Right channel has same
type of signal path.
Left channel signal path to
the ADC IC Q801 Pin 32.
Left Channel
l
e
n
n
a
h
C
t
f
e
L
Left channel from Q801 Pin 30
via Q805 pin 7.
Pin 46, 47, and 48 are system
control data & clock input.
Based on the layout Bass
and treble functions at pin
59~64 may or may not afect
the signal of front channels
depending on front settings.
TX-DS595, TX-DS696,
TX-SR500, TX-SR600,
TX-SR700
Based on TX-SR600
Page 2
CONFIDENTIAL
Technical Tip
18 Park Way, Upper Saddle River, NJ 07458
Date: January 3, 2006
_____________________________________________________________
Model: TX-SR602/SR702 can be use other Receive
Subject: Unit Displays “Auto Speaker Setup” and locks up.
Symptom: The unit displays “Auto Speaker Setup and locks up. There is no sound and
you cannot exit the Menu Screen.
Solution: No +7V to Front panel, +7 volt regulator Q303 found to be overheating and
+7V on pin 19 of the Selector IC Q302 was shorted. Replaced regulator IC Q303 and
Selector IC Q302 and normal operation was restored. Tip submitted by R. Jackson of
Goodman TV, Addison, TX.
Check all Voltage on Amp power board to DSP board.
Parts:
Ref# Description Part Number
Q302 NJW1157B 22242193R3
Q303 78L07 222780073R2
______________________________________________________________________________________
This document and the information it contains is intended for the exclusive use of Authorized ONKYO Service Centers and their
employees. This document may contain information that is privileged, confidential and exempt from disclosure under applicable law
and terms of the ONKYO Service Agreement. Any dissemination, distribution or copying of this document and the information it
contains is strictly prohibited.
CONFIDENTIALITY NOTICE:
CONFIDENTIAL
TXSR or HTR Receive. (Sample TXSR504 HTR540 )
Remove screws at back panel side and sub power board. Screws at front bracket, Power
transformer. Remove chassis and set unit as picture. Unit can be test and replace parts on
amp board.
______________________________________________________________________________________
This document and the information it contains is intended for the exclusive use of Authorized ONKYO Service Centers and their
employees. This document may contain information that is privileged, confidential and exempt from disclosure under applicable law
and terms of the ONKYO Service Agreement. Any dissemination, distribution or copying of this document and the information it
contains is strictly prohibited.
CONFIDENTIALITY NOTICE:
HT-R540
A
SCHEMATIC DIAGRAMS-9
DIGITAL AUDIO WAVE FORM SECTION
NOTE:
1. WF01 is short for WaveForm01 .
2. See SD-6(SCHEMATIC DIAGRAM-6) for details
1
74HCU04F
Q131
COAX
OPT1
2
OPT2
OPT3
13
IN
R141
WF01
IN
R142
IN
R143
WF02
COAX1
R336
OPT1
OPT2
OPT3
43
DIR
46
45
48
10
Q301
WF03
54
R312
61
R316
60
R315
CS42518-CQ
LR CLOCK (SAI_LRCK, CX_LRCK) BIT CLOCK (SAI_SLCK, CX_SLCK)
Fs=48kHz : DVD, Clock width=20.8us
Fs=44.1kHz : CD, Clock width=22.7us
BCD
WF04
SAI_SDOUT
SAI_SLCK
SAI_LRCK
WF05
Q201
TMS320D707E001
DSP
120
139
141
MASTER CLOCK=128Fs or 256Fs
CX_SDIN1
113
CX_SDIN2
115
CX_SDIN3
116
CX_SDIN4
117
CX_SCLK
142
CX_LRCK
144
64Fs=3072kHz : DVD, Clock width=325ns
64Fs=2822.4kHz : CD, Clock width=354ns
WF07
WF06
WF08
R254
R255
R256
R257
R267
R269
WF09
1
64
63
62
2
3
DAC
33
32
30
31
37
36
29
28
26
27
23
22
20
21
34
35
DAC_OUTDAC_OUT+
R411
R401
R412
R402
R413
R403
R415
R405
R416
R406
R417
R407
R418
R408
R414
R404
Q401
Q401
Q402
Q403
Q403
Q404
Q404
Q402
FL
FR
C
SL
SR
SBL
SBR
SW
WF10
AUDIO_FL
OPT1 COAX1 SAI_SDOUT
WF01
4.0V
WF02 WF03
5.0V
3.3V
3
Duty varies according to audio data
SAI_LRCK SAI_SLCK CX_SDIN1
WF04 WF05 WF06
3.3V
20.8us
Duty always varies according to audio data
3.3V
325 ns
Duty varies according to audio data
3.3V
20.8us
4
CX_LRCK CX_SCLK
WF07 WF08 WF09
3.3V
3.3V
DAC_OUT-
2.8V
0V
Analog audio wave form with aliasing noise
WF10
AUDIO_FL
WF10
325 ns20.8us
AUDIO_FL
5
2.8V
0V
Aliasing noise in no audio dataAnalog audio wave form with aliasing noise
220mVp-p
HT-R540
+ 12 V
+ 22 V
-12 V
- 7 V
Please print
When THRM line Voltage too low 0.1V or too high over 2.5V.Unit go Thermal protection in 3 sec.
When
Thermal line over
<<<<<<-----------------
Pluse & Voltage ?
Audio signal back from DAC IC 0VDC with 0.5 v pp audio signal.
DAC CT,SW,FL1,FR1...
Audio output to DSP DAC IC
A
SCHEMATIC DIAGRAMS-1
AUDIO INPUT SECTION
1
RI
3
P7901
R
TUNER
Only A5 A6
CD
2
TAPE_OUT
TAPE
VIDEO3
3
VIDEO2_OUT
only T6 A6
VIDEO2
VIDEO1_OUT
VIDEO1
4
DVD MULTI IN
(FRONT)
DVD MULTI IN
(SURR)
DVD MULTI IN
5
(C/SW)
DVD MULTI IN
(SURR BK)
1
2
L
9
P7902
7
8
6
4
5
3
1
2
6
4
P7903
5
3
1
2
9
P7904
7
8
6
4
5
3
1
2
6
P7905
4
5
3
1
2
6
P7906
4
5
3
1
2
P5505
P7900
4
7
7
7
BCDEFGH
R5500
330
TO NADG-8798
321
P304
9110#03
TO XM/Sirius
TO NADG-8799
JL5502A
1234567
XM_R
XM_L
GND_A
SIRIUS_R
SIRIUS_L
+12V
-12V
TO NADG-8798 TO NADG-8798
987654321
1413121110
RI
GND_A
GND_TU
TUPACK_R
VIDEO4_L
TUPACK_L
VIDEO4_R
P3039110#14
1011121314
-12V
+12V
GND_D
MIC
AD_L
AD_R
DAC_SL1
DAC_SR1
DAC_SBR1
DAC_SBL1
DAC_FL1
DAC_FR1
GND_A
DAC_SW1
DAC_C1
VOL_CLK
VOL_DATA
P3029110#14
SEC1H
VOLH
PROTECT
123456789
AMUT
T6
0
R5813
R5814
J5062
220K
220K
220K
LIST
LIST
R5813
R5814
270
R5610
220K
R5600
RN1441
Q5600
Q5601
RN1441
220K
R5601
R5611
LIST
R5612
LIST
220K
R5602
RN1441
Q5602
Q5603
RN1441
220K
R5603
LIST
R5613
R5614
LIST
220K
R5604
RN1441
Q5604
Q5605
RN1441
220K
R5605
R5615
LIST
R5616
LIST
220K
R5606
RN1441
Q5606
Q5607
RN1441
220K
R5607
LIST
R5617
2.2K
R5618
220K
R5608
RN1441
Q5608
Q5609
RN1441
220K
R5609
2.2K
R5619
T6 only
A6
OTHER
2.2K270
100
D9001
1 2
D9003
1 2
0
TA20
TA20
C9001
R5660
2.2
2.2
R5661
RN1441 NO
H5 T6/A6 OTHER
15 15
15 15
D9002
1 2
RL1N4003
D9004
1 2
334J
1W
1W
-
100
R5620
Q5610
Q5611
R5621
LIST
R5622
LIST
Q5612
Q5613
LIST
R5623
R5624
LIST
Q5614
Q5615
R5625
LIST
R5626
LIST
Q5616
Q5617
LIST
R5627
GND_S1
+22V
S1L+
GND
S1L-
10K
R5588
R5575
220K
R5576
220K
R5577
47K
R5578
47K
R5579
220K
R5587 10K
C5573
47/50
69
66
68
65
67
64
INL9
63
INR9
62
INLA/RECL1
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
R5589
INR11/RECR5
INRA/RECR1
INL8
INR8
INL7
INR7
INL6
INR6
INL5
INR5
INL4
INR4
INL3
INR3
INL2
INR2
INL1
INR1
AVEE
CLOCK
DATA
DGND
MONO39SUBL38SUBR37ADCR36ADCL35FRIN234FLIN233SRIN232SLIN231SWIN230CIN229SBRIN228SBLIN227TRE_R
40
C5566
47/25
1K
C5570
C5571
C5574
C5575
C5572
47/50
47/50
47/50
47/50
47/50
74
70
73
71
72
FLIN1
FRIN1
RECL3
RECR3
INL11/RECL5
INLB/RECL2
INRB/RECR2
INL10/RECL4
INR10/RECR4
Q5501
R2S15211FP
(Botom view)
47/25
C5565
NJM4580
DMIXR
DMIXL
NJM4580
C5576
C556947/50
47/50
76
77
75
CIN1
SLIN1
SWIN1
BASS_R225BASS_R1
Q5503A
1
R5590
C5590 330J
R5594
R5595
C5591
330J
R5598
7
Q5503B
Downmix
79
78
SRIN1
1-OUT
AGND
2-OUT
SBRIN1
3-OUT
AGND
4-OUT
5-OUT
AGND
6-OUT
FLOUT
AGND
FROUT
BASS_L1
BASS_L2
TRE_L
AVCC
26
223J
823J
C5564
C5563
10K
10K
10K
10K
80
1-C
SBLIN1
2-C
3-C
4-C
5-C
6-C
FLC
FRC
R5586
4
8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
C5562
1.8K
3
2
5
6
C5551
C5552
C5553
C5554
C5555
C5556
C5557
C5558
C5559
C5560
C5561
474J
R5592
R5596
R5591
10K
470
823J
223J
+/-7V Supply
C5674
C5675
R5593
1.2K
R5597
470
1.2K
R5599
10K
47/25
47/25
47/25
47/25
47/25
47/25
47/25
47/25
474J
470/16
470/16
R5585
1.8K
D5671
1 2
D5672
1 2
DAC_SW
SBR_OUT
SBL_OUT
UDZ6.2C
D5673
UDZ6.2C
D5674
1SS133
DAC_FR
DAC_FL
C_OUT
SW_OUT1
SR_OUT
SL_OUT
R_OUT
L_OUT
R5674
82
1SS133
R5675
82
R5667
22
C5667
C5666
R5666
220/25
220/25
22
-12V
+12V
47/50
C5630
Subwoofer
+/-12V Supply
220
R5630
R5631
Q5630B
NJM4580
Q5670
78M12
3
O
C5672
220/25
C5673
220/25
3
O2I
79M12
Q5671
R5680
R5681
R5682
NJM4580
4
Q5630A
3
1
2
221J
C5631
I
15K
R5632
1
C5670
C5671
2W
R5677
5
6
R5633
10/50
10/50
LIST
R5634
1.2K
C5632 103J
8
2W
LIST
R5678
R5672
47
R5670
47
R5673
68
R5671
68
10K
7
2W
2W
J5063
2W
2W
47K
G
2
1
G
SW_OUT
SBR_OUT
SBL_OUT
+22V
-22V
SR_OUT
SL_OUT
R_OUT
L_OUT
C_OUT
Z2_R
Z2_L
R5677
R5678
100/25
C5600
C5601
47/50
C5602
47/50
C5603
47/50
C5604
47/50
C5605
47/50
C5606
47/50
C5607
47/50
C5608
R5611-17
R5621-27
Q5611-17
C9003
C9004
47/50
C5609
47/50
1000/35
1000/35
R5541
220K
R5501
330
R5502
R5503
330
R5504
330
R5505
R5506
R5507
330
R5508
330
10
R5509
R5510
330
R5511
R5512
R5513
R5514
330
R5515
330
R5516
330
R5517
330
R5518
330
10
P5506
R5519
330
R5520
330
R5521
330
R5522
330
R5523
330
R5524
330
R5525
330
R5526
330
221J
C5501
221J
C5502
330
R5542
220K
R5543
220K
221K
C5503
221K
C5504
R5544
220K
R5545
220K
330
NC
C5505
NC
C5506
330
R5546
220K
R5547
220K
221J
C5507
221J
C5508
R5548
220K
R5549
220K
330
221J
C5509
221J
C5510
R5550
220K
R5551
220K
330
NC
C5511
NC
C5512
R5552
330
220K
R5553
220K
330
221J
C5513
221J
C5514
R5554
220K
R5555
220K
NC
C5515
NC
C5516
R5556
220K
R5557
220K
221J
C5517
221J
C5518
R5558
220K
R5559
220K
221K
C5519
221K
C5520
R5560
220K
R5561
220K
221J
C5521
221J
C5522
R5562
220K
R5563
220K
221J
C5523
221K
C5524
R5564
220K
R5565
220K
221J
C5525
221J
C5526
R5566
220K
220K
R5580
220K
R5582
R5581
R5583
220K
220K
TO NADG-8798
P301
12345
Z2MUT
SB/PREMUTE
Other
A6
-
0
0
TA15--
J5062
RN1441
LIST
LIST
LIST
LIST
LIST
LIST
LIST
TO NAAF-8779 (2/2)
TZ2
+5.6IR
GND_IR
6
IR
9110#06
+12VTRG
GND_TRG
D6221
2 1
R6227
3.3
D6222
2 1
C6227
104Z
Q6227
RN1402
R5668
22
8
10
5
3
12 1
RL5700
JL6604A
U01
NAAF-8779 (1/2)
AMPLIFIER PC BOARD
VOLH
SEC1H
TO NAAF-8779 (2/2)
PROTECT
Q6226
2SB1068-U
312
100K
R6226
10K
10K
R6222
1
Q6222
RN1402
R5527.28
R5567,68
R5529,30,32,33,34
C5529,30,32,33,34
C5527
221J
C5528
221J
C5529
LIST
C5530
LIST
C5531
LIST
LIST
C5532
C5533
LIST
C5534
LIST
C5708
P6002
5
GND_E
4
102J
2
3
1
R
6
Q6221
R5567
LIST
R5568
LIST
C6226
R6221
PC817X
R5569
NC
R5570
NC
C5707
R5571
NC
R5572
NC
R5532
R5533
R5573
NC
R5574
NC
R5534
223K
1
4
3
2
1
C5700
103Z
9
4
1K
R6228
3 2
R6224
+
C6222
100/25
RN1402
A6 only
PREOUT RELAY
Q5700
RN1402
D5700
1SS133
D5718
103J
C6086
103J
C6087
223K
2
3
Q6223
D5717
21
C6077
3.3K
C6221
21
2 1
102J
2 1
R6223
2
1
3
D5707
D5708
C6076
104Z
100
C6229
R5527
LIST
R5528
NC
LIST
LIST
LIST
LIST
R5529
LIST
R5531
L
104Z
R5530
LIST
100
P6221
22
24
21
2
10
1
GND_E
6
8
4
5
3
1
2
7
6
8
4
5
3
1
2
7
Except A6
SP:B OUT
T6 only
12V TRIG
ZONE2
IR IN
P6991
100
330
NC
2.2k
100
NC
221J
NC
PRE_FRONT (A6)
Z2Line OUT (T6)
P7907
R
L
SR
PRE_SURR
SL
SW
P7908
PRE_C/SW
C
SBR
PRE_SURRBK
SBL
PRE OUT A6 only
(Except SW OUT)
SBR
SBL
SR
SL
OTHERA6T6
NC
NC
NC
NC
FRONT
R
L
C
TO NAAF-8779 (2/2)
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