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AV AMPLIFIER
DSP-A595a
SERVICE MANUAL
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 of 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.
s CONTENTS
TO SERVICE PERSONNEL ........................................... 1 AMP ADJUSTMENT ..................................................... 19
REMOTE CONTROL PANELS ....................................... 1 IC DATA .................................................................. 20~30
REAR PANELS ............................................................... 2 DISPLAY DATA ........................................................... 31
SPECIFICATIONS ....................................................... 3~4 BLOCK DIAGRAM .................................................. 32~33
INTERNAL VIEW ............................................................ 5 PRINTED CIRCUIT BOARD ................................... 34~47
DISASSEMBLY PROCEDURES .................................... 5 SCHEMATIC DIAGRAM ......................................... 48~53
SELF DIAGNOSIS FUNCTION ................................ 6~17 PARTS LIST ............................................................ 54~67
FACTORY PRESET ...................................................... 18 REMOTE CONTROL TRANSMITTER ......................... 68
100678
DSP-A595a
s TO SERVICE PERSONNEL
1. Critical Components information.
Components having special characteristics are marked and must be
replaced with parts having specifications equal to those originally
AC LEAKAGE
installed. WALL EQUIPMENT TESTER OR
2. Leakage Current Measurement (For 120V Model only). OUTLET UNDER TEST EQUIVALENT
When service has been completed, it is imperative that you verify that
all exposed conductive surfaces are properly insulated from supply
circuits.
· Meter impedance should be equivalent to 1500 ohm shunted by 0.15µF.
· Leakage current must not exceed 0.5mA.
INSULATING
· Be sure to test for leakage with the AC plug in both polarities. TABLE
WARNING: CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where
applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly
other entities) to cause cancer and/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.
s REMOTE CONTROL PANELS
w R and T models w B and G models
RAV174 RAV175
V383640 US V38650 EU
1
DSP-A595a
s REAR PANELS
w R model
w T model
w B model
w G model
2
DSP-A595a
s SPECIFICATIONS
sAUDIO SECTION Residual Noise(IHF-A Network)
Minimum RMS Output Power Per Channel MAIN L/R, SP OUT 150µV
(Power Amp. Section) Channel Separation(Vol. 30dB, EFFECT OFF)
MAIN L/R, REAR L/R PHONO, Input shorted, 1kHz/10kHz 60dB/55dB
20Hz to 20kHz, 0.04% THD, 8 65W+65W CD etc, Input 5.1k terminated, 1kHz/10kHz
1kHz, 0.07% THD, 8 80W+80W 60dB/45dB
CENTER Tone Control Characteristics
20Hz to 20kHz, 0.04% THD, 8 65W BASS : Boost/Cut ±10dB(50Hz)
1kHz, 0.07% THD, 8 80W : Turnover Frequency 350Hz
Maximum Power (EIAJ) TREBLE : Boost/Cut ±10dB(20kHz)
R, T models only : Turnover Frequency 3.5kHz
MAIN L/R, REAR L/R Filter Characteristics
1kHz, 10% THD, 8 105W+105W MAIN, REAR SP SMALL : H.P.F. fc=90Hz, 12dB/oct.
CENTER, 1kHz, 10% THD, 8 105W SUB WOOFER : L.P.F. fc=90Hz, 18dB/oct.
Dynamic Power Per Channel (IHF)
MAIN L/R
8/6/4/2 sVIDEO SECTION
90W+90W/110W+110W/135W+135W/160W+160W Video Signal Type
DIN Standard Output Power Per Channel R model NTSC/PAL
G model only T, B, G models PAL
MAIN L/R, 1kHz, 0.7% THD, 4 110W+110W Video Signal Level 1Vp-p/75
IEC Power S-Video Signal Level Y:1Vp-p/75,C:0.286Vp-p/75
G model only Maximum Input Level 1.5Vp-p
MAIN L/R, 1kHz, 0.04% THD, 8 75W+75W Signal-to-Noise Ratio 50dB
Power Band Width Monitor Output Frequency Response(3dB) 5Hz~10MHz
MAIN L/R, 0.1% THD, 35W, 8 10Hz to 50kHz
Damping Factor (SPEAKER A)
MAIN L/R, 20Hz to 20kHz, 8 60 sGENERAL
Input Sensitivity/Input Impedance Power Supply
PHONO (MM) 2.5mV/47k R model AC110/120/220/240V, 50/60Hz
CD etc. 150mV/47k T model AC220V, 50Hz
MAIN L/R (EXTERNAL DECODER) 150mV/47k B, G models AC230V, 50Hz
CENTER 150mV/40k Power Consumption
SURROUND L/R 150mV/40k R, T models 310W
SUB WOOFER 150mV/40k B, G models 300W
Maximum Input Signal Level (1kHz) Maximum Power Consumption
PHONO (MM), 0.1% THD 100mV R model only
CD etc. (EFFECT ON), 0.5% THD 2.2V 5CH Simultaneous output, 10% THD 650W
Output Level/Output Impedance AC Outlet
REC OUT 150mV/1.2k R, T models, Switched x 3 100W max(Total)
SUB WOOFER (MAIN SP : SMALL) 2.1V/1.2K B model, Switched x 1 100W max
B,G models only G model, Switched x 2 100W max(Total)
PRE OUT 4V/1.2K Dimensions(W x H x D) 435 x 151 x 391mm
Headphone Jack Rated Output/Impedance (17-1/8" x 5-15/16" x 15-3/8")
CD etc., Input=1kHz, 150mV, RL=8 0.5V/390 Weight 12.5kg(27Ibs. 9 oz)
Frequency Response(20Hz to 20kHz) Accessories Remote Control Transmitter x 1
CD etc., MAIN 0±0.5dB Battery (siza "AA", "R06") x 2
RIAA Equalization Deviation
PHONO (MM) 0±0.5dB * Specifications subject to change without notice.
Total Harmonic Distortion(20Hz to 20kHz)
PHONO (MM) to REC OUT (1V) 0.02% R ......... General model B ......... British model
CD etc.(EFFECT OFF) to MAIN SP OUT(35W/8) T .......... China model G ......... European model
0.025%
Signal-to-Noise Ratio(IHF-A Network)
PHONO (MM), Input 5mV shorted, REC OUT
R, T models 86dB
B, G models 81dB
CD etc,(EFFECT OFF), Input 150mV shorted, SP OUT
96dB
3
DSP-A595a
q DIMENSIONS
(7/8")
21.5
WARNING
Do not change the IMPEDANCE SELECTOR switch
setting while the power to this unit is on, otherwise
this unit may be damaged.
IMPEDANCE SELECTOR
349.5(13-3/4")
391(15-3/8")
(13/16")
20
130(5-3/32")
151(5-15/16")
Manufactured under license from Digital Theater
Systems, Inc. US Pat. No. 5,451,942 and other wirld-
wide patents issued and pending. "DTS", "DTS
Digital Surround", are trademarks of Digital Theater
Systems, Inc. Copyright 1996 Digital Theater
(27/32")
Systems, inc. All rights reserved.
21
435(17-1/8")
Units: mm (inch)
4
DSP-A595a
s INTERNAL VIEW
1 2 3 4 5 6 7 8 9 0 A B 1 POWER TRANSFORMER
2 P.C.B. MAIN (3)
3 P.C.B. OPERATION (7)
(R, T models only)
4 P.C.B. OPERATION (3)
5 P.C.B. MAIN (4)
6 P.C.B. MAIN (8)
7 P.C.B. OPERATION (6)
8 P.C.B. MAIN (2)
9 P.C.B. MAIN (1)
0 P.C.B. VIDEO
A P.C.B. INPUT (1)
B P.C.B. INPUT (3)
#7 C P.C.B. MAIN (5)
D P.C.B. OPERATION (5)
E P.C.B. OPERATION (4)
F P.C.B. MAIN (7)
G P.C.B. OPERATION (1)
#14 #8 #9 H P.C.B. MAIN (6)
I P.C.B. INPUT (4)
J P.C.B. OPERATION (2)
K P.C.B. DSP
#13
C D E F G H I J K
s DISASSEMBLY PROCEDURES
(Remove parts in disassembly order as numbered.)
Top Cover 2
1. Removal of Top Cover
Remove 4 screws (1) and 4 screws (2) in Fig. 1.
1
2. Removal of Front Panel
a. Remove 5 knobs.
b. Remove 6 screws (3) in Fig. 1. 3
1
3 Front Panel
Knobs
Fig.1
5
DSP-A595a
s SELF DIAGNOSIS FUNCTION
1. PURPOSE AND OPERATION
The DSP-A595a has a Self Diagnosis Function to locate a faulty part, if any, by inspecting and taking
measurements.
There are 11 main items in the diagnostic menu and some of them have sub-menu items as listed below.
No. MAIN MENU SUB MENU REMOTE CONTROL CODE (KEY)
1 ANALOG THROUGH 1. MAIN BYPASS 7A88 ("1" [DSP mode])
2. DSP 0dB
2 DSP THROUGH 1. YSS918SRAM 7A89 ("2" [DSP mode])
2. YSS918
3. DSP FULL BIT
3 AC3/DTS THROUGH 1. STATUS (BINARY FORM)
4 PRO LOGIC 1. CENTER LARGE 7A8A ("3" [DSP mode])
2. EFFECT OFF
5 SPEAKERS SET 1. MAIN : SMALL 0dB 7A8B ("4" [DSP mode])
2. MAIN : LARGE 0dB 7A8C ("5" [DSP mode])
3. MAIN : LARGE 10dB 7A8D ("6" [DSP mode])
4. LFE/BASS : MAIN 7A8E ("7" [DSP mode])
CENTER : NONE
5. LFE/BASS : MAIN 7A8F ("8" [DSP mode])
6. LFE/BASS : SWFR 7A90 ("9" [DSP mode])
7. CENTER : NONE 7A91 ("0" [DSP mode])
8. CENTER : SMALL
REAR : SMALL
9. FRONT MIX 7A12 ("ENTER" [DSP mode])
6 EFFECT OFF 1. EFFECT OFF
/DISPLAY CHECK 2. VFD DISP OFF
3. VFD DISP ALL
4. CHECKED PATTERN
5. RELEASE DATE
7 MANUAL TEST 1. ALL
2. MAIN L
3. CENTER
4. MAIN R
5. REAR R
6. REAR L
7. LFE
8 FACTORY PRESET 1. INHIBIT(Inhibit Memory Init)
2. RESERVED (Init. Memory)
9 AD DATA CHECK 1.
2. KEY
3. TUNING SIGNAL
4. DC PROTECTION
5. PS PROTECTION
10 STATUS 1. DSP CPU STATUS
2. CHANNEL STATUS
3. VERSION INFORMATION
4. CHECK SUM
5. BSI0 (AC3/DTS)
6. BSI1
7. BSI2
8. BSI3
9. BSI4
10. BSI5
11 VERSION CHECK 1. MAIN MC CHECK SUM
/DSP CPU SUM 2. SUB MC CHECK SUM
/EXIT 3. MAIN M.C. VERSION
4. SUB M.C. VERSION
5. PORT INFORMATION
6. EXIT
6
DSP-A595a
2. BEGINNING AND CANCELLATION
(1) STARTING UP THE FUNCTION AND THE DISPLAY
After starting up, menu No. 1 is selected.
A. How to start diagnostic program
Using the front panel keys of the main unit.
Plug in the AC power cord , and, with Power OFF, hold down the "INPUT MODE" and "+" keys simultaneously (Step 1),
and then press the "STANDBY/ON" key (Step 2).
Submenu No. 1 of the Diagnosis Main Menu No. 1 will start.
FRONT PANEL
"STANDBY/ON" key "+" key "INPUT MODE" key
SET TIME/
MENU LEVEL + INPUT MODE
STANDBY/ON
Step2. Press the "STANDBY/ON" key Step1. Hold down the "INPUT MODE"
and "+" key simultaneously.
B. Settings for start-up of diagnostic program
The settings used when starting the diagnostic program are as follows.
1. EFFECT LEVEL :
CHANNEL CENTER R SUR L SUR SWFR
LEVEL (dB) 0 0 0 0
2. MUTING : OFF
3. INPUT (VIDEO) : DVD/LD (DVD/LD)
4. CENTER SPEAKER : LARGE
5. REAR SPEAKER : LARGE
6. MAIN SPEAKER : LARGE
7. LFE/BASS OUT : SWFR
C. Start-up display
The protection function information appears on the front panel display of the main unit.
7
DSP-A595a
q FL display at start-up of diagnostic program
When the diagnostic program has started, the history (*2) of the protection function (*1) is displayed. If the protection
function has been activated in the past, the type and voltage value are displayed. After a few seconds the diagnosis
function menu will appear.
(*1) If a faulty condition is detected such as excessive current, a bad power supply or excessive amplifier DC offset,
the Power will be switched OFF automatically.
(*2) The protection records will be cleared when "RESERVED" is selected in diagnosis menu No. 8 and FACTORY
PRESET is engaged.
q History of protection function
Each case of the history of the protection function is displayed as shown below.
Appears when the protection function has not been activated.
1 DVD/LD NO PROTECT
Appears when the current protection function has been activated.
1 DVD/LD I PROTECT When power is turned on in an abnormal status, the power relay
will come on, protection will operate immediately, and power will
turn off.
Appears when the power protection function has been activated.
1 DVD/LD PS : 21% For the % value, the voltage at that point is shown by 5V/100%.
When power is turned on in an abnormal status, power will turn off
after half a second.
Appears when the power amp DC protection function has been
1 DVD/LD DC : 19% activated.
For the % value, the voltage at that point is shown by 5V/100%.
When power is turned on in an abnormal status, power will turn off
after two seconds.
(2) EXITING METHOD
The diagnosis function can be exited by any of the following procedures. Take care with the setting of backup memory
initialization menu (diagnosis No. 8) when releasing the diagnosis function:
1. Select diagnosis menu No. 11/submenu No. 6 "EXIT".
2. Press the "STANDBY/ON" key on the main unit or "STANDBY" key on the remote control to turn power off.
8
DSP-A595a
3. OPERATION AND DISPLAY WHEN STARTING DIAGNOSIS FUNCTION
(1) Selection of diagnostic menu
The diagnostic menu and the sub-menu can be selected by using the front panel keys of the main unit or the remote
control unit.
q Selection by using the front panel keys
The main menu can be changed cyclically by using the "TV SPORTS" and "DISCO" keys, and the submenu,
by using the "ROCK CONCERT" and "CONCERT HALL" keys. The "DISCO" or "CONCERT HALL" key will increase
the main or submenu number.
FRONT PANEL
TV ROCK CONCERT
SPORTS DISCO CONCERT HALL
Main menu Sub menu
Reverse Forward Reverse Forward
q Selection by using the remote control unit
The remote control codes in the menu list (see right column
on page 6) correspond to the DSP program test and effect keys.
See the figure on the right.
DSP
7A
(2) Other functions available while diagnosis function is active
Listed below are the other functions available while the diagnosis function is active.
· Selecting input source (Tape monitor/Ext. decoder)
· Adjusting effect level (Center, Rear, Subwoofer)
· Adjusting master volume
· Muting on/off
· Power on/off
(3) Diagnosis default status
When not otherwise specified, default settings and values in each menu are as follows:
· All "SPEAKERS" : LARGE
· ALL electronic VRs : 0dB
· DYNAMIC RANGE : MAX
· LFE LEVEL : 0dB (DOLBY DIGITAL, DTS)
· CENTER DELAY : 0ms
9
DSP-A595a
4. CONTENTS OF DIAGNOSIS FUNCTION
This section describes the contents of the self diagnosis function in detail.
No.1 ANALOG THROUGH
The input is fixed to analog (A/D). There are two submenus.
1. MAIN BYPASS 1 DVD/LD MAIN BYPAS
The MAIN L/R signals bypass the analog circuits to be output.
For CENTER/LFE, FRONT L/R and REAR L/R, the MAIN L/R signals via the DSP are output without
being processed (through). (Remote control code 7A-88: "1" key [DSP mode])
CODEC.AD AC3D2av(YSS918) MAIN L
DA
ANALOG IN AK4320 MAIN R
L/R
AK4526A
DECODER DSP
L/R L/R CODEC.DA FRONT L
FRONT R
DIR2 L/R REAR L
REAR R
DIGITAL IN
L/R CENTER
AK4526A SUBWOOFER
YM3436
· INPUT : DVD/LD (Analog signal)
(Lch and Rch, 1KHz, 20dBV)
1M SRAM
· OUTPUT : SPEAKERS
: This shows that the device is not operating. MAIN L : 23.8 dBV REAR L : 23.7 dBV
MAIN R : 23.8 dBV REAR R : 23.7 dBV
CENTER: 23.7 dBV
2. DSP 0dB 1 DVD/LD DSP 0DB
MAIN L/R, CENTER/LFE, FRONT L/R and REAR L/R pass through the DSP without being
processed.
CODEC.AD AC3D2av(YSS918) MAIN L
DA
ANALOG IN AK4320 MAIN R
L/R
AK4526A
DECODER DSP
L/R L/R CODEC.DA FRONT L
FRONT R
DIR2 L/R REAR L
REAR R
DIGITAL IN
L/R CENTER
AK4526A SUBWOOFER
YM3436
· INPUT : DVD/LD (Analog signal)
1M SRAM (Lch and Rch, 1KHz, 20dBV)
· OUTPUT : SPEAKERS
: This shows that the device is not operating. MAIN L : 23.7 dBV REAR L : 23.6 dBV
MAIN R : 23.7 dBV REAR R : 23.6 dBV
CENTER: 23.6 dBV
10
DSP-A595a
No.2 DSP THROUGH
The input is automatically discriminated by signal detection and switched with priorities AC-3 (DOLBY
DIGITAL)>DTS Digital Surround>Audio>analog. There are the following three submenus.
1. YSS918-SRAM 2 DVD/LD YSS918SRAM
MAIN L/R are input to the DSP via AC3D2av, pass through SRAM, and are then output to all channels without
being processed. (Remote control code 7A-89: "2" key [DSP mode])
CODEC.AD AC3D2av(YSS918) MAIN L
DA
ANALOG IN AK4320 MAIN R
L/R
AK4526A
DECODER DSP
L/R L/R CODEC.DA CENTER
SUBWOOFER
DIR2 L/R REAR L
REAR R
DIGITAL IN
L/R FRONT L
AK4526A FRONT R
YM3436
L/R L/R
· INPUT : DVD/LD (Analog signal)
1M SRAM (Lch and Rch, 1KHz, 20dBV)
· OUTPUT : SPEAKERS
MAIN L : 23.7 dBV REAR L : 23.5 dBV
MAIN R : 23.7 dBV REAR R : 23.5 dBV
CENTER: 23.6 dBV
2. YSS918 2 DVD/LD YSS918
MAIN L/R are input to the DSP via AC3D2av, and then output to all channels without being processed.
CODEC.AD AC3D2av(YSS918) MAIN L
DA
ANALOG IN AK4320 MAIN R
L/R
AK4526A
DECODER DSP
L/R L/R CODEC.DA FRONT L
FRONT R
DIR2 L/R REAR L
REAR R
DIGITAL IN
L/R CENTER
AK4526A SUBWOOFER
YM3436
· INPUT : DVD/LD (Analog signal)
1M SRAM (Lch and Rch, 1KHz, 20dBV)
: This shows that the device is not operating. · OUTPUT : SPEAKERS
MAIN L : 23.8 dBV REAR L : 23.8 dBV
MAIN R : 23.8 dBV REAR R : 23.8 dBV
CENTER: 23.8 dBV
3. DSP FULL BIT 2 DVD/LD DSP FULL
MAIN L/R are input to the DSP via AC3D2av, and then output to all channels without being processed.
The head margin is disabled, and DSP outputs digital full-bit signals.
Same as the above menu, except that the digital data is output to DA with full bits.
· INPUT : DVD/LD (Analog signal)
(Lch and Rch, 1KHz, 20dBV)
· OUTPUT : SPEAKERS
MAIN L : 13.8 dBV REAR L : 22.8 dBV
MAIN R : 13.8 dBV REAR R : 22.8 dBV
CENTER: 16.8 dBV
11
DSP-A595a
No.3 AC-3/DTS THROUGH
The input is digital signal only. AC-3 (DOLBY DIGITAL) or DTS Digital Surround decoding operation is executed,
according to the input source. bit 0 bit 7
1. STATUS(BINARY FORM) 3 DVD/LD 3T00000001
AC-3 (DOLBY DIGITAL) decoded signals are output to each channel via AC3D2av.
CODEC.AD AC3D2av(YSS918) MAIN L
DA
ANALOG IN AK4320 MAIN R
L/R
AK4526A
DECODER DSP
CODEC.DA
DOLBY DIGITAL
DIR2 or C/LFE C/LFE CENTER
PRO LOGIC SUBWOOFER
or
DIGITAL IN DTS
LS/RS LS/RS REAR L
AK4526A REAR R
YM3436
: This shows that the device is not operating.
1M SRAM
AC-3 Status Info. : bit 7 6 5 4 3 2 1 0
(Invalid in DTS) 1 0 0 0 0 0 0 0
IEC958 digital data bit
IEC958 commercial-use device bit
IEC958 digital format error
Demodulator muting (without RF signal)
1 for audio other than PCM linear audio
1 during red DTS lock
1 during DTS decode OK
1 during AC-3 decode OK
No.4 PRO LOGIC
The input is automatically discriminated by PCM Audio>analog. DTS Digital Surround is disabled.
The submenu is switched between PRO LOGIC (AUTO BALANCE OFF) and EFFECT OFF.
1. CENTER LARGE 4 DVD/LD P. LGC C:L
The input is automatically detected whether it is PCM Audio or analog. With analog, PCM Audio or AC-3 (DOLBY DI-
GITAL) 2/0 input, the L, R, C and S signals are PRO LOGIC decoded and output. With AC-3 (DOLBY DIGITAL) other
than 2/0, PRO LOGIC does not operate, and AC-3 (DOLBY DIGITAL) playback is executed. (Remote control code
7A-8A: "3" key [DSP mode])
CODEC.AD AC3D2av(YSS918) MAIN L
DA
ANALOG IN AK4320 MAIN R
L/R
AK4526A
DECODER DSP
CODEC.DA
DOLBY DIGITAL
DIR2 or C C CENTER
PRO LOGIC
DIGITAL IN or
DTS S S REAR L
AK4526A REAR R
YM3436
· INPUT : DVD/LD (Analog signal)
(Lch and Rch, or Lch only, 1KHz, 20dBV)
1M SRAM · OUTPUT : SPEAKERS
(INPUT : Lch and Rch ) (INPUT : Lch only)
MAIN L : 15.4 dBV REAR L : 23.8 dBV
MAIN R : 14.2 dBV REAR R : 25.0 dBV
CENTER: 26.6 dBV CENTER : 12.5 dBV
REAR L : 6.0 dBV REAR L : 6.0 dBV
4 DVD/LD EFFECT OFF REAR R : 6.5 dBV REAR R : 6.2 dBV
2. EFFECT OFF
MAIN L/R are bypassed and output.
12
DSP-A595a
No.5 SPEAKERS SET
The input is automatically discriminated by AC-3(DOLBY DIGITAL)>DTS Digital Surround>PCM Audio>analog.
There are the following 9 submenu items: The signal from the DSP block is normally in the effect off status for menu
items 1-4. For other menu items, the same signal as in 2. DSP THROUGH: YSS918 menu is output.
5 DVD/LD MAIN:S 0DB 5 DVD/LD MAIN:L 0DB 5 DVD/LD MAIN:L --10
5 DVD/LD B:MAIN C:N 5 DVD/LD LFE/B:MAIN 5 DVD/LD LFE/B:SWFR
5 DVD/LD C:NONE 5 DVD/LD C:S REAR:S 5 DVD/LD FRONT MIX
The analog switches in each submenu are set as follows:
REMOTE MAIN
SUB MENU CENTER SP REAR SP MAIN SP LFE/BASS OUTPUT
CODE LEVEL
1 MAIN:S 0DB 7A-8B LARGE LARGE SMALL 0dB SWFR MAIN L/R
2 MAIN:L 0DB 7A-8C LARGE LARGE LARGE 0dB SWFR MAIN L/R
3 MAIN:L -10 7A-8D LARGE LARGE LARGE -10dB SWFR MAIN L/R
4 B:MAIN C:N 7A-8E NONE LARGE LARGE 0dB MAIN MAIN L/R
5 LFE/B:MAIN 7A-8F LARGE LARGE LARGE 0dB MAIN LFE -> L/R
6 LFE/B:SWFR 7A-90 LARGE LARGE LARGE 0dB SWFR LFE -> SWFR
7 C:NONE 7A-91 NONE LARGE LARGE 0dB SWFR CENTER -> L/R
8 C:S REAR:S SMALL SMALL LARGE 0dB SWFR CENTER/REAR
9 FRONT MIX 7A-12 LARGE LARGE LARGE 0dB SWFR FRONT -> L/R
LARGE: Mode in which speakers with high bass-sound playback capability (large unit) are used. Full frequency band
widths is output.
SMALL : Mode in which speakers with low bass-sound playback capability (small unit) are used. Frequncies below 90 Hz
are mixed with the channel specified by LFE/BASS.
NONE: Mode in which center speaker is not used. The center audio signal is reduced by 3 dB and mixed into MAIN L/R.
LFE/B: MAIN
: Mode in which subwoofer speaker is not used. The subwoofer audio signal is reduced by 4.5 dB and mixed into
MAIN L/R. But because of the phase difference, the MAIN L/R output is not simply summed.
Purpose of the submenu as follows:
SUB MENU PURPOSE
1 MAIN:S 0DB Verification of the High and low pass filter response and gain in the bass redirection mode.
2 MAIN:L 0DB Reference of the sub menu No. 1 and 2.
3 MAIN:L -10 Verification of the effect in the main level function.
4 B:MAIN C:N Verification of the mixing circuit effect to the main channel.
5 LFE/B:MAIN Verification of the bass mix gain.
6 LFE/B:SWFR Verification of the LFE maximum output.
7 C:NONE Verification of the center mix gain.
8 C:S REAR:S Verification of the high and low pass filter response and gain in the bass redirection mode.
9 FRONT MIX Verification of the front mix gain.
13
DSP-A595a
No.6 DISPLAY CHECK
Check program for FL display. The display status will change as follows with submenu operation. The signal is
processed with EFFECT OFF.
6 DVD/LD DISP CHECK
Initial display All segments turn off All segments turn on
6 DVD/LD 9902161625
Release date display Segments light in lattice form
All segments are turned on and off to detect defects in the FL driver and FL display segments. Then the FL driver
operation is checked by the dimmer control.
Finally, all segments are turned on and off alternately (in lattice form), to check for a short-circuit between adjacent
segments.
No.7 MANUAL TEST
The noise generator built into the DSP outputs test noise from the channel specified by the submenu.
7 DVD/LD TEST ALL 7 DVD/LD TEST MAINL 7 DVD/LD TEST CNTR
7 DVD/LD TEST MAINR 7 DVD/LD TEST REARR 7 DVD/LD TEST REARL
7 DVD/LD TEST LFE
No.8 FACTORY PRESET
The initialization of the back-up RAM, which contains effect level, DSP program, set menu contents, etc. is reserved
or inhibited. The Signal is processed with EFFECT OFF.
8 DVD/LD PRESET INH 1. INHIBIT: Inhibits initialization of the back-up RAM.
Specify this option protect user set Values.
2. RESERVED: Reserve to initialization of the back-up RAM.
8 DVD/LD PRESET RES
(The RAM is actually initialized when power
is turned on next time.) Specify this option
at the factory preset or to reset the RAM.
For the contents of the initialization, see page 18.
The protection data is also reset.
14
DSP-A595a
No.9 AD DATA CHECK
The A/D conversion values of the main CPU which detects key scan, protection, etc. are displayed in % (100%: 5V).
All signal processing before this menu is executed will be held.
The keys on the main unit cannot be operated to detect the values of all keys in the K1/K2/K3/K4 and SI.
Operating the "CONCERT HALL" key and turning the rotary encoder (input selector on the main unit) will switch the
submenu.
9 DVD/LD AD DATACHK
Press the "CONCERT HALL "key.
9 DVD/LD K99999999 K1/K2/K3/K4: Panel key on main unit
K1 K2 K3 K4 See Table 1.
Turning the rotary encoder.
9 DVD/LD SI 0
SI: Tuner signal level
Turning the rotary encoder.
9 DVD/LD DC 7
DC: DC protection value
(normal value: 1-13)
Press the "CONCERT HALL"key.
9 DVD/LD PS 40
PS: Power voltage protection value
(normal value: 28-54)
Press the "CONCERT HALL"key.
Table 1
AD Value 0 11 23 36 51 67 84
K1
K2 TAPE/MD MON INPUT MODE
/EXT. DECODER
K3 ROCK CONCERT SET TIME/
CONCERT HALL MENU +
LEVEL
/DTS ENHANCED MOVIE MONO TV DISCO
K4 EFFECT SURROUND THEATER MOVIE SPORTS
Cautions:
1. If K1/K2/K3/K4 are more than ±4% from the reference values, normal operation will not be executed.
2.If DC and PS are outside the normal values, the protection function will operate and power will turn off.
15
DSP-A595a
No.10 STATUS FROM DSP MICOM
The status data from the DSP microprocessor is sequentially displayed in a hexadecimal number.
All signal processing before this menu is executed will be held.
STATUS 1st 2nd 3rd 4th
10 DVD/LD 0 00000000 10 DVD/LD 1 00000000 10 DVD/LD 2 00000000
10 DVD/LD 3 00000000 10 DVD/LD 4 00000000 10 DVD/LD 5 00000000
10 DVD/LD 6 00000000 10 DVD/LD 7 00000000 10 DVD/LD 8 00000000
10 DVD/LD 9 00000000 Indicate 0 0
bit 7 6 5 4 3 2 1 0
[STATUS 0]
<1st Byte> Indicate bit
3 2 1 0
bit7 Mute request bit3 acmod 7 6 5 4
0000B:1+1 0001B:1/0 0 0 0 0 0
bit6 fs bit2 1 0 0 0 1
0010B:2/0 0011B:3/0
bit5 000B:Analog 001B:32kHz bit1 0100B:2/1 0101B:3/1 2 0 0 1 0
010B:44.1kHz 011B:48kHz 0110B:2/2 0111B:3/2 3 0 0 1 1
bit4 Others:Don't care bit0
1000B:7.1 4 0 1 0 0
acmod: If it is 1000B or more with DTS 7.1 signal, the DSP block will be muted.
5 0 1 0 1
6 0 1 1 0
<2nd Byte>
7 0 1 1 1
bit7 AC-3 decode OK bit3 Demodulator muting (without RF signal) 8 1 0 0 0
9 1 0 0 1
bit6 DTS decode OK bit2 IEC958 digital format error A 1 0 1 0
bit5 Red DTS record bit1 IEC958 commercial use device bit
B 1 0 1 1
(Flashes and lights) C 1 1 0 0
bit4 1 for audio other than PCM bit0 IEC958 digital data bit D 1 1 0 1
linear audio
E 1 1 1 0
F 1 1 1 1
[Note]
IEC958: Standard to identify the PCM bit stream signal. Digital format error refers to a digital signal with the
sampling frequency undefined (neither 44.1k, 32k nor 48k). Since the operation of each device cannot be
assured at fs outside specifications, the sub-microprocessor handles this status as the forced analog mode
(ignored even if decoding is OK from the detection terminal level), and selects the signal from the analog input
terminal. Since the sub-microprocessor transmits 000B (analog) for STATUS#0 bits 4-6 to the main
microprocessor, the main microprocessor visually operates in the same way as with digital unlocking.
<3rd Byte>
bit7 AC3 KARAOKE bit3 On-board write mode
bit6 DIR2 LOCKN bit2 The number of digital inputs is 2 (equivalent to 595)
bit5 DIR2 ERR bit1 DSP is AC3D2 (DTS present)
bit4 AC3D MUTE bit0 RF DEM present
<4th Byte> Always "00"
[STATUS 1] IEC958 channel status bits 00-31 available from DIR2
<1st-byte> bits 00-07
<2nd-byte> bits 08-15
<3rd-byte> bits 16-23
<4th-byte> bits 24-31
[STATUS 2] 4-byte ASCII code of sub CPU version data
[STATUS 3] Displays the check sum of sub microprocessor program area with ASCII 4 bytes in a hexadecimal number.
[STATUS 4] Displays the bit stream information contained in AC-3(DOLBY DIGITAL)/DTS Digital Surround signal from the
first byte.
[STATUS 5-9] Displays the bit stream information contained in AC-3(DOLBY DIGITAL) signal from the first byte.
16
DSP-A595a
No.11 CPU VERSION/CHECK SUM/PORT INFO/EXIT DIAG
The check sum, version and port setting of main CPU/DSP CPU are displayed.
The signal is EFFECT OFF.
Operating the submenu will finish self-diagnosis, and ordinary operation mode will be restored.
The suffix letter ("B" in the following) of version indication is for compatibility of communications between the main and
DSP microprocessors.
Combining microprocessors with different suffixes will make normal operation impossible.
11 DVD/LD M-SM:XXXXX Main microprocessor check sum
11 DVD/LD S-SM:XXXXX DSP microprocessor check sum
11 DVD/LD M-VER:Z04B Main microprocessor version
11 DVD/LD S-VER:Z08B DSP microprocessor version
One suffix letter is for compatibility of communications between the main
and DSP microprocessors.
* Use microprocessors with the same suffix.
11 DVD/LD P:00000000 bit 7 6 5 4 3 2 1 0
1 0 0 0 0 0 0 0
Always absent (0)
EXIT Always absent (0)
Tuner Mode V1 (V1)
Tuner Mode V2 (V1)
Always absent (0)
Always absent (0)
Model Type RDS (V2)
Model Type DSP-A (V2)
V1 Hi=1, Low=0
Tuner Mode V2 (Port 96) 0 *1 1 *2 0 *3 1 *4
Tuner Mode V1 (Port 95) 0 0 1 1
*1 AM:5311611kHz/9kHz FM: 76.090.0MHz/100kHz (J model)
*2 AM:5301710kHz/10kHz FM: 87.5107.9MHz/200kHz (U, C models)
*3 AM:5311611kHz/9kHz FM: 87.5108.0MHz/50kHz (R, T, A, B, G, L models)
*4 AM: 530-1710kHz/10kHz FM:87.5-108.0 MHz/100kHz (R, T models)
V2 Hi=1, Low=0
Model Type DSP-A(Port 83) 1 DSP-A595a 0 RX-V595aRDS 0 RX-V595a
Model Type RDS(Port 70) 0 1 0 HTR-5150
17
DSP-A595a
s FACTORY PRESET
All of the system settings are initially set from the factory as follows.
q INPUT (VIDEO) DVD/LD (DVD/LD)
q EFFECT LEVEL
EFFECT CHANNEL PRESET VALUE
CENTER 0 dB
RIGHT SURROUND 0 dB
LEFT SURROUND 0 dB
SUBWOOFER 0 dB
q DSP PROGRAM
INPUT DSP PROGRAM DELAY PRESET VALUE
V-AUX DOLBY PRO LOGIC 20ms
VCR PRO LOGIC ENHANCED 20ms
VDV/LD 70mm MOVIE THEATER 20ms
DIGITAL/DTS MOVIE THEATER 16ms
TV/DBS TV SPORTS 9ms
TAPE/MD ROCK CONCERT 49ms
TUNER DISCO 40ms
CD ROCK CONCERT 16ms
PHONO CONCERT HALL 44ms
q SET MENU
No. SET MENU PRESET VALUE
1. CENTER SPEAKER [CNTR>] LARGE
2. REAR SPEAKER [REAR>] LARGE
3. MAIN SPEAKER [MAIN>] LARGE
4. LFE/BASS OUT [BASS>] SW (SUBWOOFER)
5. MAIN LEVEL [M. LVL>] NRML (NORMAL)
6. DOLBY DIGITAL LFE LEVEL [D. D. LFE] 0 dB
7. DYNAMIC RANGE [D. RNG] MAX
8. DTS LFE LEVEL [DTS LFE] 0 dB
9. CENTER DELAY [C. DELAY] 0 ms
10. MEMORY GUARD [GUARD] OFF