Text preview for : Yamaha R-840.pdf part of Yamaha receiver



Back to : Yamaha R-840.pdf | Home

MICRO COMPONENT SYSTEM MCR-940/MCR-840/MCR-640
RECEIVER/SPEAKER PACKAGE

R-840/NS-BP300




R-840/NS-BP300
SERVICE MANUAL
· When accepting a repair order from the user, it is recommended to receive the R-840 and BD-940/DVD-840/CD-
640 as a set for the repair work.
· The MCR-940 consists of the R-840, BD-940 and NS-BP300.
The MCR-840 consists of the R-840, DVD-840 and NS-BP300.
The MCR-640 consists of the R-840, CD-640 and NS-BP300.
This service manual is for the R-840/NS-BP300. For service manual of the BD-940/DVD-840/CD-640, please refer
to the following publication numbers:

BD-940: 1011 5 4 / DVD-840: 1011 5 5 / CD-640: 1011 5 6




IMPORTANT NOTICE
This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.
It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already known
and understood by the users, and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury,
destruction of expensive components, and failure of the product to perform as specified. For these reasons, we advise
all YAMAHA product owners that any service required should be performed by an authorized YAMAHA Retailer or
the appointed service representative.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service
departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and
specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the
distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.



CONTENTS
TO SERVICE PERSONNEL ............................................2 CONFIRMATION OF IDLING CURRENT OF AMP UNIT ....38­39
SYSTEM COMPOSITION ................................................3 DISPLAY DATA .............................................................40
FRONT PANELS .........................................................4­6 IC DATA ...................................................................41­44
REAR PANELS ......................................................... 7­11 PIN CONNECTION DIAGRAMS .............................45­47
REMOTE CONTROL PANELS ..................................... 12 BLOCK DIAGRAM ........................................................49
SPECIFICATIONS ................................................... 13­15 PRINTED CIRCUIT BOARDS .................................50­62
INTERNAL VIEW .......................................................... 16 SCHEMATIC DIAGRAMS .......................................63­70
DISASSEMBLY PROCEDURES ............................. 17­19 REPLACEMENT PARTS LIST ................................71­79
UPDATING FIRMWARE ..........................................20­24 REMOTE CONTROL .....................................................80
SELF-DIAGNOSTIC FUNCTION ............................25­37 SYSTEM CONNECTOR ..........................................81­82




Copyright © 2009 All rights reserved.
1011 5 3 This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission.
P.O.Box 1, Hamamatsu, Japan
'09.11
R-840/NS-BP300


TO SERVICE PERSONNEL
AC LEAKAGE
1. Critical Components Information WALL EQUIPMENT TESTER OR
Components having special characteristics are marked and OUTLET UNDER TEST EQUIVALENT
must be replaced with parts having specifications equal to those
originally installed.
2. Leakage Current Measurement (For 120V Models Only)
When service has been completed, it is imperative to verify
that all exposed conductive surfaces are properly insulated INSULATING
TABLE
from supply circuits.
R-840/NS-BP300




· Meter impedance should be equivalent to 1500 ohms shunted · Leakage current must not exceed 0.5mA.
by 0.15 F. · Be sure to test for leakage with the AC plug in both polarities.


For U model
"CAUTION"
"F1: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 3.5A, 125V
FUSE."
For C model
CAUTION
F1: REPLACE WITH SAME TYPE 3.5A, 125V FUSE.
ATTENTION
F1: UTILISER UN FUSIBLE DE RECHANGE DE MÉME TYPE DE 3.5A, 125V.




WARNING: CHEMICAL CONTENT NOTICE!
This product contains chemicals known to the State of California to cause cancer, or birth defects or other reproductive
harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON
WHATSOEVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or
expose eyes to solder/flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands before
handling food.




About lead free solder
All of the P.C.B.s installed in this unit and solder joints are soldered using the lead free solder.
Among some types of lead free solder currently available, it is recommended to use one of the following types for the
repair work.
· Sn + Ag + Cu (tin + silver + copper)
· Sn + Cu (tin + copper)
· Sn + Zn + Bi (tin + zinc + bismuth)

Caution:
As the melting point temperature of the lead free solder is about 30°C to 40°C (50°F to 70°F) higher than that of the lead
solder, be sure to use a soldering iron suitable to each solder.




2
R-840/NS-BP300


SYSTEM COMPOSITION
When accepting a repair order from the user, it is recommended to receive the R-840 and BD-940/DVD-840/CD-640 as a
set for the repair work.
The MCR-940 consists of the R-840, BD-940 and NS-BP300.
The MCR-840 consists of the R-840, DVD-840 and NS-BP300.
The MCR-640 consists of the R-840, CD-640 and NS-BP300.
This service manual is for the R-840/NS-BP300. For service manual of the BD-940/DVD-840/CD-640, please refer to the
following publication numbers:




R-840/NS-BP300
BD-940: 1011 5 4 / DVD-840: 1011 5 5 / CD-640: 1011 5 6

MCR-940
NS-BP300 NS-BP300




R-840 BD-940




MCR-840
NS-BP300 NS-BP300




R-840 DVD-840




MCR-640

NS-BP300 NS-BP300




R-840 CD-640




3
R-840/NS-BP300


FRONT PANELS
R-840
Top view
C, T, K, A, B, G, L, V models
R-840/NS-BP300




A, B models


Front view
C, T, K, A, L, V models




4
R-840/NS-BP300




B, G models




R-840/NS-BP300




5
R-840/NS-BP300




NS-BP300


C, T, K, A, B, G, L, V models
R-840/NS-BP300




6
R-840/NS-BP300


REAR PANELS
R-840


C model




R-840/NS-BP300
T model




7
R-840/NS-BP300




K model
R-840/NS-BP300




A model




8
R-840/NS-BP300




B model




R-840/NS-BP300
G model




9
R-840/NS-BP300




L model
R-840/NS-BP300




V model




10
R-840/NS-BP300




NS-BP300


C, T, K, A, B, G, L, V models




R-840/NS-BP300
C, K, A, B, G, L, V models




T model




11
R-840/NS-BP300


REMOTE CONTROL PANELS
MCR-940 MCR-840 MCR-640
B, G, F models C, T, K, A, L, V models G, F models C, L, V models B, G models
R-840/NS-BP300




Key colors
A. Red
B. Green
C. Yellow
D. Blue




12
R-840/NS-BP300


SPECIFICATIONS
R-840
Audio Section DAB Section [A, B models]
Minimum RMS Output Power (Power Amp. Section) Tuning Range
(L/R drive, 1 kHz, 10 % THD, 6 ohms) ............................................................ 174.0 to 240 MHz (BAND III)
C, T, K, A, B, G, V models .............................................65 W + 65 W
L model .........................................................................60 W + 60 W
General
Dynamic Power Per Channel (IHF) (6 / 4 / 2 ohms)
C, T, K, A, B, G, V models ......................................... 60 / 75 / 100 W Power Supply




R-840/NS-BP300
L model ....................................................................... 55 / 70 / 92 W C model .................................................................. AC 120 V, 60 Hz
MAX. Power Per Channel (1 kHz, 0.7 % THD, 4 ohms) [B, G models] T model ................................................................... AC 220 V, 50 Hz
......................................................................................64 W + 64 W
K model .................................................................. AC 220 V, 60 Hz
IEC Power (1 kHz, 0.1 % THD, 6 ohms) [B, G models]
......................................................................................52 W + 52 W A model .................................................................. AC 240 V, 50 Hz

Maximum Power (JEITA) (1 kHz, 10 % THD, 6 ohms) [L, V models] B, G models ............................................................ AC 230 V, 50 Hz
V model ..................................................................................... 65 W L model ...................................................... AC 220­240 V, 50/60 Hz
L model ..................................................................................... 60 W V model ........................................................... AC 110­120 V, 60 Hz
Power Band Width (MAIN L/R drive, 0.1 % THD, 30 W, 6 ohms)
Power Consumption
.................................................................................10 Hz to 50 kHz
C, T, K, L, V models ................................................................ 110 W
Damping Factor (20 Hz to 20 kHz, 6 ohms)
......................................................................................... 60 or more A, B, G models ....................................................................... 115 W
Input Sensitivity/Input Impedance Standby Power Consumption (reference data)
Player etc. ......................................................... 200 mV / 47 k-ohms
......................................................................................0.3 W or less
Maximum Input Voltage (1 kHz, 0.5 % THD)
DVD etc. ................................................................................... 2.8 V Maximum Power Consumption (1 kHz, 10 % THD, 6 ohms) [V model]
Rated Output Voltage/Output Impedance ................................................................................................ 400 W
SUBWOOFER ........................................................................... 1.2 V Dimensions (W x H x D)
Headphone Jack Rated Output/Output Impedance ................................. 215 x 110 x 348 mm (8-1/2" x 4-3/8" x 13-3/4")
(1 kHz, 200 mV, 8 ohms)
Player etc. .............................................................. 130 mV / 8 ohms Weight
Frequency Response (20 Hz to 20 kHz) ............................................................................... 5.7 kg (12.6 lbs.)
Player etc. ......................................................................... 0 ±0.5 dB
Finish
Total Harmonic Distortion (20 Hz to 20 kHz, 30 W, 6 ohms)
Black color ........................................... C, T, K, A, B, G, L, V models
Player etc. to SP OUT .................................................0.04 % or less
Silver color ........................................... C, T, K, A, B, G, L, V models
Signal to Noise Ratio (IHF-A network)
Player (Input shorted 200 mV) ................................. 100 dB or more Accessories
Residual Noise (IHF-A network)
for R-840
PURE DIRECT ON ................................................................. 110 V
Indoor FM antenna .....................................................................x 1
Channel Separation (DVD etc., Input 5.1 k-ohms shorted)
1 kHz / 10 kHz ................................. 60 dB or more / 45 dB or more DAB wire antenna (B model) .....................................................x 1
Tone Control Characteristics DOCK cover ...............................................................................x 1
Bass for MCR-940/MCR-840/MCR-640
Boost/Cut ........................................................ ±10 dB, step 50 Hz Remote control ...........................................................................x 1
Turnover frequency ............................................................. 350 Hz
Battery (R03, AAA, UM-4) ..........................................................x 2
Treble
Boost/Cut ...................................................... ±10 dB, step 20 kHz Audio pin cable (1.0 m) .............................................................x 1
Turnover frequency ............................................................ 3.5 kHz Video pin cable (1.5 m) ..............................................................x 1
System control cable (0.6 m) .....................................................x 1
FM Section USB cap .....................................................................................x 1
Tuning Range
C model ............................................................... 87.5 to 107.9 MHz * Specifications are subject to change without notice due to
T, K, A, B, G, L, V models ................................ 87.50 to 108.00 MHz product improvements.
50 dB Quieting Sensitivity (IHF) (1 kHz, 100 % MOD.)
Mono ...................................................................... 2.8 V (20.2 dBf)

Signal to Noise Ratio (IHF)
Mono ........................................................................................73 dB
Stereo ......................................................................................70 dB

Harmonic Distortion (1 kHz)
Mono ........................................................................................ 0.5 %
Stereo ...................................................................................... 0.5 %

Antenna Input
........................................................................ 75 ohms unbalanced
13
R-840/NS-BP300




is a trademark.
NS-BP300
Speaker Section
Type ................................. 2-way bass reflex speaker system
Driver "BD-LIVE" logo is a trademark of Blu-ray Disc Association.
Woofer .................................................13 cm (5-1/8") cone type
Tweeter ............................................ 2.5 cm (1") soft dome type
Frequency Response ...........................55 Hz to 28 kHz (-10dB) "BONUSVIEW" is a trademark of Blu-ray Disc Association.
R-840/NS-BP300




55 Hz to 80 kHz (-30dB)
is a trademark of DVD Format/Logo Licensing Corporation.
Impedance ...................................................................6 ohms
Nominal Input ................................................................ 60 W
Maximum Input ............................................................ 110 W "HDMI", the "HDMI" logo, and "High-Definition Multimedia Interface" are
Sensitivity ..................................................... 85 dB/2.83 V/m trademarks or registered trademarks of HDMI Licensing LLC.
MPEG Layer-3 audio decoding technology licensed from Fraunhofer IIS
Crossover Frequency ................................................... 3 kHz and Thomson multimedia.
Input Terminal ......................................... Screw/Banana type Windows Media is either a registered trademark or trademark of Microsoft
Corporation in the United States and/or other countries.
Dimensions (W x H x D)
.............................. 176 x 318 x 305 mm (6-7/8" x 12-1/2" x 12")
Weight ................................................................. 4.3 kg (9.5 lbs.)
"x.v.Color" and "x.v.Color" logo are trademarks.
Finish
Black piano color (PN) ..................C, T, K, A, B, G, L, V models
White piano color (WH) .................C, T, K, A, B, G, L, V models
"AVCHD" and the "AVCHD" logo are trademarks of Panasonic Corporation
Accessories and Sony Corporation.
Speaker cable (2.0 m) ..................................................................x 2


* Specifications are subject to change without notice due to
product improvements.


C .................Canadian model B ......................British model
T .................... Chinese model G .................European model Java and all Java-based trademarks and logos are trademarks or
K ..................... Korean model L .................Singapore model registered trademarks of Sun Microsystems, Inc. in the United States and/
A ................Australian model V ..................... Taiwan model or other countries.

This product is licensed under the AVC patent portfolio license and
VC-1 patent portfolio license for the personal and noncommercial
"iPod" is a trademark of Apple Inc., registered in the U.S. and other use of a consumer to (i) encode video in compliance with the AVC
countries. Standard and VC-1 Standard ("AVC/VC-1 Video") and/or (ii) decode
"Made for iPod" means that an electronic accessory has been designed AVC/VC-1 Video that was encoded by a consumer engaged in a
to connect specifically to iPod and has been certified by the developer to personal and non-commercial activity and/or was obtained from a
meet Apple performance standards. video provider licensed to provide AVC/VC-1 Video. No license is
Apple is not responsible for the operation of this device or its compliance granted or shall be implied for any other use. Additional information
with safety and regulatory standards. may be obtained from MPEG LA, LLC.
Audio-visual material may consist of copyrighted works which must not
be recorded without the authority of the owner of the copyright. Refer to MPEG Layer-3 audio decoding technology licensed from Fraunhofer
relevant laws in your country. IIS and Thomson Multimedia.
This product incorporates copyright protection technology that is
protected by U.S. patents and other intellectual property rights.
Use of this copyright protection technology must be authorized by
Macrovision, and is intended for home and other limited viewing uses only
unless otherwise authorized by Macrovision.
Reverse engineering or disassembly is prohibited.




Manufactured under license from Dolby Laboratories. "Dolby" and the
double-D symbol are trademarks of Dolby Laboratories. DivX, DivX Ultra Certified, and associated logos are trademarks of DivX,
Inc. and are used under license.



DTS is a registered trademark and the DTS logos, Symbol, DTS-HD and
DTS-HD Master Audio | Essential are trademarks of DTS, Inc. ©1996-2008 DTS and DTS 2.0 + Digital Out are registered trademarks and the DTS
DTS, Inc. All Rights Reserved. logos and Symbol are trademarks of DTS, Inc. © 1996-2007 DTS, Inc. All
Rights Reserved.
14
R-840/NS-BP300




· DIMENSIONS

R-840




(15/16")
Top view




23




R-840/NS-BP300
309 (12-3/16")
277 (10-7/8")


348 (13-3/4")
16
(5/8")




Front view
110 (4-3/8")
8 102 (4")
(3/8")




177 (7")
215 (8-1/2")
Unit: mm (inch)


NS-BP300

305 (12")
Front view Side view
21 280 (11") 4
(7/8") (1/8")
310 (12-3/16")
318 (12-1/2")




20 20 25 25
8
(5/16")




(3/4") 176 (3/4") (1") (1")

(6-7/8") Unit: mm (inch)
15
R-840/NS-BP300


INTERNAL VIEW R-840


Top view Top view

1 2 3 4 5 6
R-840/NS-BP300




12 11 10 9 8 7



Front view 13
1 MAIN (8) P.C.B.
2 MAIN (2) P.C.B.
3 DAB P.C.B. (A, B models)
4 DAB MODULE (A, B models)
5 FM TUNER
6 FUNCTION (1) P.C.B.
7 MAIN (5) P.C.B.
8 MAIN (1) P.C.B.
9 POWER TRANSFORMER
10 MAIN (7) P.C.B.
14
11 MAIN (4) P.C.B.
12 FUNCTION (2) P.C.B.
13 MAIN (3) P.C.B.
14 MAIN (6) P.C.B.




16
R-840/NS-BP300


DISASSEMBLY PROCEDURES
(Remove parts in disassembly order as numbered.)
Disconnect the power cable from the AC outlet.


1. Removal of Top Cover Unit 2. Removal of Front Panel Unit
a. Remove 4 screws ( ) and 4 screws ( ). (Fig. 1) a. Remove 2 screws ( ) and 2 screws ( ). (Fig. 1)
b. Lift the top cover unit. (Fig. 1) b. Remove 2 screws ( ) and remove W804-805. (Fig. 1)
c. Remove CB108 and CB301. (Fig. 1) c. Remove CB53, CB101 and CB109. (Fig. 1)




R-840/NS-BP300
d. Remove the top cover unit. (Fig. 1) d. Release 2 hooks and remove the front panel unit.
(Fig. 1)




1 2
2




Top cover unit


2




Front panel unit
5 CB301

CB108

5
3
Hook
1
W804
FUNCTION (1) P.C.B.

CB101
W805 CB109
Hook
CB53
4
3 MAIN (5) P.C.B.




Fig. 1




17
R-840/NS-BP300




3. Removal of Amp Unit
a. Remove 2 screws ( ), 2 screws ( ), 3 screws ( ), 3 screws ( ) and screw ( ). (Fig. 2)
b. Remove CB103, CB403 and CB505. (Fig. 2)
c. Remove the amp unit together with the MAIN (1) P.C.B., the FUNCTION (1) P.C.B. and the rear panel. (Fig. 2)




8
R-840/NS-BP300




7 MAIN (2) P.C.B.


Amp unit
Rear panel


6




CB403


8 9 FUNCTION (1) P.C.B.

MAIN (1) P.C.B.
CB103
CB505




10




Fig. 2




18
R-840/NS-BP300




When checking the P.C.B.s:
· Spread the rubber sheet and the cloth. Then place the amp unit on the cloth and check it. (Fig. 3)
· Connect the ground point of the rear panel to the chassis with a ground lead or the like. (Fig. 3)
· Reconnect all cables (connectors) that have been disconnected.
· When connecting the flexible flat cable, be careful with polarity.




R-840/NS-BP300
Ground lead


Rear panel
Top cover unit

Amp unit




Chassis



Rubber sheet and the cloth




Front panel unit
Rubber sheet and the cloth




Fig. 3




19
R-840/NS-BP300


UPDATING FIRMWARE
When the following parts are replaced, the firmware must be updated to the latest version.
MAIN P.C.B.
Microprocessor (IC101) of FUNCTION P.C.B.



Required tools Preparation and precautions
R-840/NS-BP300




· Firmware downloader program · Download the firmware downloader program and
....................................................... FlashSta.exe the latest firmware from the specified source to
· Firmware the same folder of the PC.
..................................................... R840_xxx.mot · Prepare the above specified RS232C cross cable.
R840_xxx.id · While writing the firmware, keep the other application
· RS232C cross cable "D-sub 9 pin female" software on the PC closed.
(Specifications) It is also recommended to keep the software on
the task tray closed as well.
Pin No.2 RxD Pin No.2 RxD
Pin No.3 TxD Pin No.3 TxD
Pin No.5 GND Pin No.5 GND
Pin No.7 RTS Pin No.7 RTS
Pin No.8 CTS Pin No.8 CTS

· RS232C conversion adaptor (Part No.: AAX77610)

Note: Do not use the RS232C conversion adaptor
(Part No.: WR492800), which is used
for updating BD-940/DVD-840/CD-640,
otherwise the update will not proceed.




Confirmation of firmware version
Before and after updating the firmware, check the firmware version and checksum by using the self-diagnostic
function menu.
Start up the self-diagnostic function.
Using the "1-1. Firmware version" / "1-2. Checksum" menu, have the firmware version and checksum displayed, and
note down them. (See "SELF-DIAGNOSTIC FUNCTION")


1-1. Firmware version
The firmware version of microprocessor (IC101 of the MAIN P.C.B.) is displayed.



1-2. Checksum
The checksum value of microprocessor (IC101 of the MAIN P.C.B.) is displayed.




20
R-840/NS-BP300




Connection
* Disconnect the power cable of this unit from the AC outlet.
1. Set the switch (SW301) of RS232C conversion adaptor to the "FLASH UCOM" position. (Fig. 1)
2. Connect the writing port (CB104 of FUNCTION P.C.B.) located on the rear panel of this unit to the serial port (RS232C)
of the PC with RS232C cross cable, RS232C conversion adaptor and flexible flat cable as shown below. (Fig. 3)

Note: Do not use the RS232C conversion adaptor (Part No.: WR492800), which is used for updating BD-940/




R-840/NS-BP300
DVD-840/CD-640, otherwise the update will not proceed.




This unit




PC




Serial port (RS232C) Writing port
(FUNCTION P.C.B. CB104)

RS232C conversion adaptor




RS232C cross cable
SW301
FLASH Flexible flat cable (9P)
UCOM OTHER




Fig. 1




21
R-840/NS-BP300




Operation procedure
1. Connect the power cable of this unit to the AC outlet.
The power to this unit is supplied and the microprocessor is in the writing mode.
2. Start up FlashSta.exe.
The screen appears as shown below. (Fig. 2)
3. Select the data to be transmitted and port. (Fig. 2)
· Select Program
R-840/NS-BP300




Select Internal flash memory
· RS232C
Select the port of RS-232C
* For selection of the port, COM1 to 4 can be used.
As COM5 or higher port cannot be used, select from COM 1 to 4 of the setting on the PC side.




Select Internal flash memory




Select the port of RS-232C




Fig. 2




4. Click [Refer...] and select the firmware name. (Fig. 3)

* The ID and MCU Type are loaded automatically when the file is selected. (Fig. 3)
Click [OK]. (Fig. 3)




When [Refer...] is clicked, the "Open" screen appears.


Fig. 3


22
R-840/NS-BP300




5. Click [Setting], and set the baud rate. (Fig. 4)




R-840/NS-BP300
Select 115200 bps for the baud rate and 40 ms for
the program intervals.
* Reduce the baud rate if a transmission error
occurs frequently.




Fig. 4




6. Click [E.P.R.], then the "Erase" screen appears. (Fig. 5)

7. Click [OK] to start writing. (Fig. 5)




Writing being executed.




Fig. 5




23
R-840/NS-BP300




8. When writing of the firmware is completed, the screen appears as shown below. (Fig. 6)
Click [OK]. (Fig. 6)

9. Click [Exit] to end FlashSta.exe. (Fig. 6)
R-840/NS-BP300




Fig. 6




10. Disconnect the power cable of this unit from the AC outlet.
11. Remove the RS232C conversion adaptor and flexible flat cable from the writing port (CB104 of FUNCTION P.C.B.)
of this unit.
12. Start up the self-diagnostic function.
Using the "1-1. Firmware version" / "1-2. Checksum" menu, have the firmware version and checksum displayed,
and note down them. (See "SELF-DIAGNOSTIC FUNCTION")
* When the firmware version and checksum are different from written ones, perform the "UPDATING FIRMWARE"
again from the beginning.
13. Disconnect the power cable of this unit from the AC outlet.




24
R-840/NS-BP300


SELF-DIAGNOSTIC FUNCTION
There are 10 main menu items, each of which has sub-menu items.
Listed in the table below are main menu items and sub-menu items.

MAIN MENU SUB-MENU
1 VER/DEST/SUM 1 FIRMWARE VERSION / DESTINATION
2 CHECKSUM
3 DAB MODULE VERSION (A, B models)




R-840/NS-BP300
2 DISPLAY CHECK 1 MENU DISPLAY
2 VFD DISPLAY OFF
3 VFD DISPLAY ALL
4 VFD DIMMER 1 (100 %) / 2 (50 %) / 3 (25 %)
3 FACTORY PRESET 0 PRESET INH / RSRV
4 AD DATA CHECK 1 PS1 PROTECTION
2 PS2 PROTECTION
3 DC PROTECTION
4 THM PROTECTION
5 VOL (VOLUME)
6 BAS (TONE CONTROL: BASS)
7 TBL (TONE CONTROL: TREBLE)
8 BAL (BALANCE L/R)
9 CNT (CENTER)
A KEY
B DST (DESTINATION)
5 PROTECTION HISTORY 0 DISPLAY / RESET
1 HISTORY 1
2 HISTORY 2
3 HISTORY 3
4 HISTORY 4
6 EEPROM CHECK 1 EEPROM CHECK
7 iPod CHECK 1 iPod CONNECTOR CHECK
2 iPod ACCESSORY POWER (DET_IPAP)
3 iPod DETECTION (N_DET_IP)
4 iPod PLAY/PAUSE KEY CHECK
8 AUDIO CHECK 1 AUDIO MUTE ON
2 SP RELAY OFF
3 HP MUTE ON
4 BASS MAX (100Hz +10dB)
5 BASS MIN (100Hz -10dB)
6 TRE MAX (10kHz +10dB)
7 TRE MIN (10kHz -10dB)
9 POWER OFF FACTOR HISTORY 1 LAST
2 HISTORY 1
3 HISTORY 2
4 HISTORY 3
5 HISTORY 4
A SYSTEM CONNECTOR CHECK 1 SYSTEM CONNECTOR LOOP BACK CHECK
2 SYSTEM CONNECTOR POWER LOW / HIGH (for CD-640)




25
R-840/NS-BP300




Starting Self-Diagnostic Function
Turn the "BALANCE" knob counterclockwise fully and then while pressing the "PURE DIRECT" key of this unit as shown in
the figure below, press the " " (On/Standby) key to turn on the power.
The self-diagnostic function mode is activated.

Keys of this unit
R-840/NS-BP300




" " (On/Standby) key "PURE DIRECT" key




"BALANCE" knob

Display



Destination
Firmware version




Starting Self-diagnostic function in the protection cancel mode
If the protection function works and causes hindrance to trouble shoot, cancel the protection function as described below, and it
will be possible to enter the self-diagnostic function mode.
(The protection functions other than the PRI function will be disabled.)
Turn the "BALANCE" knob counterclockwise fully and then while pressing the "PURE DIRECT" key of this unit as shown in the
figure above, press the " " (On/Standby) key to turn on the power and keep pressing the "PURE DIRECT" key for 4 seconds or
longer.
The self-diagnostic function mode is activated with the protection functions disabled.
In this mode, the "SLEEP" segment of the FL display of this unit flashes to indicate that the mode is self-diagnostic function mode
with the protection functions disabled.

CAUTION!
Using this product with the protection function disabled may cause further damage to itself. Use special care when using
this mode.




Canceling Self-diagnostic function
Before canceling self-diagnostic function, execute setting for FACTORY PRESET of main menu No. 3 (Memory
initialization inhibited or Memory initialized).
* In order to keep the user memory preserved, be sure to select PRESET INH (Memory initialization inhibited).
Press the " " (On/Standby) key of this unit to turn off the power.




26
R-840/NS-BP300




Display provided when Self-Diagnostic Function started
The FL display of this unit displays the history of protection function data then the main menu (sub-menu FIRMWARE
VERSION/DESTINATION of main menu No. 1 VER/DEST/SUM) a few seconds later.

When there is no history of protection function:

Opening message After a few seconds Main menu display




R-840/NS-BP300
When there is a history of protection function:
When there is a history of protection function due to abnormal voltage in the power supply section.



A/D conversion value of voltage


For details of protection functions, refer to the main menu No. 4-1 PS1 / 4-2 PS2.



When there is a history of protection function due to abnormal DC output from the amplifier.



A/D conversion value of voltage


For details of protection functions, refer to the main menu No. 4-3 DC.



When there is a history of protection function due to abnormal temperature.



A/D conversion value of voltage


For details of protection functions, refer to the main menu No. 4-4 THM.




History of protection function
When the protection function has worked, its history is stored in memory with a backup. Even if no abnormality is
noted while servicing the unit, an abnormality which has occurred previously can be defined as long as the backup
data has been stored.
The history of the protection function will be initialized when self-diagnostic function is cancelled by selecting No. 3
PRESET RSRV (Memory initialized) / No. 5 PROTECTION HISTORY (History reset) or when the backup data is erased.




27
R-840/NS-BP300




Operation procedure of Main menu and Sub-menu
There are 10 main menu items, each of them having sub-menu items.

Main menu and Sub-menu selection
Both main menu and sub-menu can be selected by using the "INPUT" knob.

Parameter selection
The parameter can be selected by using the "PRESET " (Up) key.
R-840/NS-BP300




Knob of this unit

Menu select Parameter select




Reverse Forward




"PRESET " (Up) key




Functions in Self-Diagnostic Function mode
In addition to the self-diagnostic function menu items, functions as listed below are available.
· Power on/off
· Master volume
* Functions related to the tuner and the set menu are not available.




28
R-840/NS-BP300




Details of Self-Diagnostic Function menu
1. VER/DEST/SUM
This menu is used to display the firmware version, checksum and destination.
The checksum is obtained by adding the data at every 8-bit for each program area and expressing the result as a 4-figure
hexadecimal data.
* Numeric values in the figure example are for reference.




R-840/NS-BP300
1-1. FIRMWARE VERSION/DESTINATION
The firmware version of microprocessor (IC101 of FUNCTION P.C.B.) and destination are displayed.




1-2. CHECKSUM
The checksum value of microprocessor (IC101 of FUNCTION P.C.B.) is displayed.




1-3. DAB MODULE VERSION (A, B models)
The Firmware version of DAB module is displayed.




29
R-840/NS-BP300




2. FL DISPLAY CHECK
This menu is used to check the FL display section/indicators for displaying/indicating.
Using the sub-menu, the display condition changes as shown below.

2-1. Initial display
" " (On/Standby) indicator: On (Green)
PURE DIRECT indicator: Off
R-840/NS-BP300




2-2. All segments Off
" " (On/Standby) indicator: Off
PURE DIRECT indicator: Off


2-3. All segments On
" " (On/Standby) indicator: On (Orange)
PURE DIRECT indicator: On