Yamaha DSP-A595a User manual

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.
100678
AV AMPLIFIER
DSP-A595a
TO SERVICE PERSONNEL ........................................... 1
REMOTE CONTROL PANELS....................................... 1
REAR PANELS ............................................................... 2
SPECIFICATIONS....................................................... 3~4
INTERNAL VIEW ............................................................ 5
DISASSEMBLY PROCEDURES .................................... 5
SELF DIAGNOSIS FUNCTION ................................6~17
FACTORY PRESET ...................................................... 18
■CONTENTS AMP ADJUSTMENT ..................................................... 19
IC DATA .................................................................. 20~30
DISPLAY DATA ........................................................... 31
BLOCK DIAGRAM .................................................. 32~33
PRINTED CIRCUIT BOARD ...................................34~47
SCHEMATIC DIAGRAM ......................................... 48~53
PARTS LIST ............................................................ 54~67
REMOTE CONTROL TRANSMITTER ......................... 68
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1
DSP-A595a
■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
installed.
2. Leakage Current Measurement (For 120V Model only).
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.
•Be sure to test for leakage with the AC plug in both polarities.
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.
■REMOTE CONTROL PANELS
▼R and T models ▼B and G models
WALL
OUTLET EQUIPMENT UNDER TEST
AC LEAKAGE
TESTER OR
EQUIVALENT
INSULATING
TABLE
RAV174
V383640US
RAV175
V38650 EU
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2
DSP-A595a
▼ T model
▼B model
▼G model
▼R model
■REAR PANELS
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3
DSP-A595a
■SPECIFICATIONS
■AUDIO SECTION
Minimum RMS Output Power Per Channel
(Power Amp. Section)
MAIN L/R, REAR L/R
20Hz to 20kHz, 0.04% THD, 8Ω65W+65W
1kHz, 0.07% THD, 8Ω80W+80W
CENTER
20Hz to 20kHz, 0.04% THD, 8Ω65W
1kHz, 0.07% THD, 8Ω80W
Maximum Power (EIAJ)
R, T models only
MAIN L/R, REAR L/R
1kHz, 10% THD, 8Ω105W+105W
CENTER, 1kHz, 10% THD, 8Ω105W
Dynamic Power Per Channel (IHF)
MAIN L/R
8/6/4/2Ω
90W+90W/110W+110W/135W+135W/160W+160W
DIN Standard Output Power Per Channel
G model only
MAIN L/R, 1kHz, 0.7% THD, 4Ω110W+110W
IEC Power
G model only
MAIN L/R, 1kHz, 0.04% THD, 8Ω75W+75W
Power Band Width
MAIN L/R, 0.1% THD, 35W, 8Ω10Hz to 50kHz
Damping Factor (SPEAKER A)
MAIN L/R, 20Hz to 20kHz, 8Ω60
Input Sensitivity/Input Impedance
PHONO (MM) 2.5mV/47kΩ
CD etc. 150mV/47kΩ
MAIN L/R (EXTERNAL DECODER) 150mV/47kΩ
CENTER 150mV/40kΩ
SURROUND L/R 150mV/40kΩ
SUB WOOFER 150mV/40kΩ
Maximum Input Signal Level (1kHz)
PHONO (MM), 0.1% THD 100mV
CD etc. (EFFECT ON), 0.5% THD 2.2V
Output Level/Output Impedance
REC OUT 150mV/1.2kΩ
SUB WOOFER (MAIN SP : SMALL) 2.1V/1.2KΩ
B,G models only
PRE OUT 4V/1.2KΩ
Headphone Jack Rated Output/Impedance
CD etc., Input=1kHz, 150mV, RL=8Ω0.5V/390Ω
Frequency Response(20Hz to 20kHz)
CD etc., MAIN 0±0.5dB
RIAA Equalization Deviation
PHONO (MM) 0±0.5dB
Total Harmonic Distortion(20Hz to 20kHz)
PHONO (MM) to REC OUT (1V) 0.02%
CD etc.(EFFECT OFF) to MAIN SP OUT(35W/8Ω)
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
Residual Noise(IHF-A Network)
MAIN L/R, SP OUT 150µV
Channel Separation(Vol. –30dB, EFFECT OFF)
PHONO, Input shorted, 1kHz/10kHz 60dB/55dB
CD etc, Input 5.1kΩterminated, 1kHz/10kHz60dB/45dB
Tone Control Characteristics
BASS : Boost/Cut ±10dB(50Hz)
: Turnover Frequency 350Hz
TREBLE : Boost/Cut ±10dB(20kHz)
: Turnover Frequency 3.5kHz
Filter Characteristics
MAIN, REAR SP SMALL : H.P.F. fc=90Hz, 12dB/oct.
SUB WOOFER : L.P.F. fc=90Hz, 18dB/oct.
■VIDEO SECTION
Video Signal Type
R model NTSC/PAL
T, B, G models PAL
Video Signal Level 1Vp-p/75Ω
S-Video Signal Level Y:1Vp-p/75Ω,C:0.286Vp-p/75Ω
Maximum Input Level 1.5Vp-p
Signal-to-Noise Ratio 50dB
Monitor Output Frequency Response(–3dB) 5Hz~10MHz
■GENERAL
Power Supply
R model AC110/120/220/240V, 50/60Hz
T model AC220V, 50Hz
B, G models AC230V, 50Hz
Power Consumption
R, T models 310W
B, G models 300W
Maximum Power Consumption
R model only
5CH Simultaneous output, 10% THD 650W
AC Outlet
R, T models, Switched x 3 100W max(Total)
B model, Switched x 1 100W max
G model, Switched x 2 100W max(Total)
Dimensions(W x H x D) 435 x 151 x 391mm
(17-1/8" x 5-15/16" x 15-3/8")
Weight 12.5kg(27Ibs. 9 oz)
Accessories Remote Control Transmitter x 1
Battery (siza "AA", "R06") x 2
* Specifications subject to change without notice.
R ......... General model B ......... British model
T.......... China model G ......... European model
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4
DSP-A595a
●DIMENSIONS
Units: mm (inch)
21.5
(7/8")
435(17-1/8")
349.5(13-3/4")
391(15-3/8")
130(5-3/32")
151(5-15/16")
20
(13/16")
21
(27/32")
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
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
Systems, inc. All rights reserved.
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DSP-A595a
32 33
■BLOCK DIAGRAM
10
11
21
20
6CH
SELECTOR
IC102
26 25
27
6
5
4
89
7
22
23
24
OPERATION
KEY
SW802~806,
810~815,
817,822~824
12
4
22
93
18
21
27
50
29 47
23
11
26
90
17
46
76
51
RESET
Q803,D805
POWER DOWN DETECT
Q805,D811,812
BACK-UP
(MEMORY) Q806,D813 REGULATOR
1 2 65 65
~
33
12 ~55
40 ~
U800
TMUTE
/ST
METER
TCE
~
F1 F2
RESET
PDT
VDD1
VDD3
PRY
VP
STANBY/ON
SW801
D808
+B
–B
+25
-25
F804
J809
J809
F803
Q807 RY800
S12
MAIN µ-COM
IC800
REMOTE
SENSOR
FL DISPLAY
V800
D809
,
16
15
XL2
95
94
96
97
RCE
RDT
DEST/RDO
RCK
INPUT/
VIDEO/
S VIDEO
SELECTOR
CONTROL
Q801,802
MUTE
DRIVE
14
3
14
15
2
2
15
3
57
IC402A
31
IC402B
31
IC403A
57
IC403B
IC110
IC111
LEVEL CONTROL LEVEL CONTROL
6 GANG MOTOR VOLUME
VR401
TONE
CONTROL
IC801
BASS
VR800TREBLE
VR801 VR802
-10dB
MAIN
LEVEL
Q811
BALANCE
Q501
Q502
Q503
Q504
Q505
Q724
MUTING
Q506,511,512,
521,529,Q527A/C
Q507,513,514,
522,530,533,
531A/C
Q508,515,516,
523,534,537,
531A/C
Q509,517,518,
524,538,541
539A/C
Q510,519,520,
525,542,545,
543A/C
MAIN
POWER AMP
CENTER
POWER AMP
REAR
POWER AMP
RY501
RY502
RY503
L
RMAIN
CENTER
L
R
SUBWOOFER
REAR
(SURROUND)
OUTPUT SPEAKER
+
–L
–
+R
+
–
REAR
(SURROUND)
CENTER
A
BL
A
BR
MAIN
PHONES
+12A
-12
74 Q556
EFFECT-RY
75 Q553
SPRY
24 PRO2
PRO1
Q548
Q546,547
Q549,550
RY503
REAR SPEAKER
RY502
CENTER SPEAKER
RY501
MAIN SPEAKER
SPEAKER RELAY DRIVE
OVER
CURRENT
DETECT
CENTER
MAIN
REAR
VCR
PHONO
CD
13
75
IC104A/B
L
R
L
R
L
R
L
R
L
R
L
R
DVD/LD
TV/DBS
IN
OUT
VCR
IN
(PLAY)
L
R
L
R
TAPE/MD
L
R
MAIN
CENTER
L
R
SUBWOOFER
SURROUND
EXTERNAL
DECODER
INPUT AUDIO SIGNAL DIGITAL
SIGNAL
L
R
VIDEO
AUX
INPUT SELECTOR
IC101
13
2
22
30 28
29
TAPE
MONITOR
IC102
VIDEO AUX
DVD/LD
TV/DBS
IN
OUT
VCR Q305,306
VIDEO AMP &
SELECTOR
IC303 MONITOR
OUT
MONITOR
OUT
S-VIDEO SELECTOR
& AMP
IC301,302,IC304,305
IN
DVD/LD
OUT
VIDEO
AUX
VCR
S VIDEO
T800
D751
D451
D452
MAIN,
CENTER,
REAR
AMP
RDS
CONTROL
(NOT USED)
DSP
CONTROL
TUNER
CONTROL
(NOT USED)
M
IC404
IC14
VIDEO
FMC
Q552
D513 INPEDANCE
SELECTOR
SW761
D815
SPEAKER RELAY
SELECTOR SWITCH
SUB
WOOFER
CENTER
57 24
IC107A
31 23
IC107B
31 25
IC13A
57 26
IC13B
LFE
C
RL
RR
57 27
IC11A
31 28
IC11B
67
IC108A
FL
FR 67
IC109A
DAC
IC6
INHIBIT
IC101
21 20
10 11
57 18
IC10A
31 17
IC10B
L
R
1
DAC
IC7
68
IC106B
42
IC106A
DSP
+
DIGITAL/
PRO-LOGIC/
DTS
DECODER
IC4
8
6
~
47
45
~
24 8 42
IC103
30
27
29
IC103
IC103
IC103
RAM
IC5
31
IC108B
Q810
IC8,9
OPTICAL
OPTICAL
TV/DBS
DVD/LD 1013 IC351
COAXIAL
A/D
IC6
9
1
DIR
IC3
3
37
12
13
XL1
84
INPUT
SELECTOR
IC352
OPTICAL SIGNAL
DETECTOR
IC351
8
913
IC2
7
57
IC401B
31
IC401A
45
30 ~,69 52 ~
,
99
DO
81
82
A
B
SW800
INPUT
SELECTER
87
78
10
12
13
5~91 88
,,, 77
Q800
–10dB
VR401
MOTOR
DRIVE
SUB µ-COM
85 9286
H,P,F
34
5
8
IC103
IC103
MAIN
POWER AMP SW711
23
+B,-B,+25,-25,
+12A,+12B,+5D,-12
25 PRO3
72
VDD2
VDD4 D806
Q721,
722
+5D
-12B
D453
IC725,
724,
722
IC723
D762,763 +RYV
5 7
3 1
42
IC802A
68
IC802B
31
IC109B
H,P,F
2627
26
23
IC103
IC103
VIDEO SIGNAL
1
TUNER L
R
2
3
OUT
(REC)
4
Q808, D816
(R,T models)
(J,B,G models)
J807
B.G models only
XL800
AC OUTLETS
AC OUTLETS
AC OUTLET
G model
B model
J,R,T models
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6
DSP-A595a
■ 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.
1
2
3
4
5
6
7
8
9
10
11
SUB MENU
1. MAIN BYPASS
2. DSP 0dB
1. YSS918–SRAM
2. YSS918
3. DSP FULL BIT
1. STATUS (BINARY FORM)
1. CENTER LARGE
2. EFFECT OFF
1. MAIN : SMALL 0dB
2. MAIN : LARGE 0dB
3. MAIN : LARGE –10dB
4. LFE/BASS : MAIN
CENTER : NONE
5. LFE/BASS : MAIN
6. LFE/BASS : SWFR
7. CENTER : NONE
8. CENTER : SMALL
REAR : SMALL
9. FRONT MIX
1. EFFECT OFF
2. VFD DISP OFF
3. VFD DISP ALL
4. CHECKED PATTERN
5. RELEASE DATE
1. ALL
2. MAIN L
3. CENTER
4. MAIN R
5. REAR R
6. REAR L
7. LFE
1. INHIBIT(Inhibit Memory Init)
2. RESERVED (Init. Memory)
1. – – –
2. KEY
3. TUNING SIGNAL
5. PS PROTECTION
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
1. MAIN MC CHECK SUM
2. SUB MC CHECK SUM
3. MAIN M.C. VERSION
4. SUB M.C. VERSION
5. PORT INFORMATION
6. EXIT
MAIN MENU
ANALOG THROUGH
DSP THROUGH
AC–3/DTS THROUGH
PRO LOGIC
SPEAKERS SET
EFFECT OFF
/DISPLAY CHECK
MANUAL TEST
FACTORY PRESET
AD DATA CHECK
STATUS
VERSION CHECK
/DSP CPU SUM
/EXIT
REMOTE CONTROL CODE (KEY)
7A–88 ("1" [DSP mode])
– – –
7A–89 ("2" [DSP mode])
– – –
– – –
– – –
7A–8A ("3" [DSP mode])
– – –
7A–8B ("4" [DSP mode])
7A–8C ("5" [DSP mode])
7A–8D ("6" [DSP mode])
7A–8E ("7" [DSP mode])
7A–8F ("8" [DSP mode])
7A–90 ("9" [DSP mode])
7A–91 ("0" [DSP mode])
– – –
7A–12 ("ENTER" [DSP mode])
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
4. DC PROTECTION
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
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7
DSP-A595a
STANDBY/ON
+–
SET
MENU TIME/ LEVEL
INPUT MODE
1.
2.
3.
4.
5.
6.
7.
EFFECT LEVEL :
MUTING : OFF
INPUT (VIDEO) : DVD/LD (DVD/LD)
CENTER SPEAKER : LARGE
REAR SPEAKER : LARGE
MAIN SPEAKER : LARGE
LFE/BASS OUT : SWFR
CHANNEL CENTER R SUR L SUR SWFR
LEVEL (dB) 0 0 0 0
C. Start-up display
The protection function information appears on the front panel display of the main unit.
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.
and then press the "STANDBY/ON" key (Step 2).
Plug in the AC power cord , and, with Power OFF, hold down the "INPUT MODE" and "+" keys simultaneously (Step 1),
Submenu No. 1 of the Diagnosis Main Menu No. 1 will start.
B. Settings for start-up of diagnostic program
The settings used when starting the diagnostic program are as follows.
"+" key
"STANDBY/ON" key "INPUT MODE" key
FRONT PANEL
Step2. Press the "STANDBY/ON" key Step1. Hold down the "INPUT MODE"
and "+" key simultaneously.
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8
DSP-A595a
● 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.
Appears when the current protection function has been activated.
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.
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
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.
● 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.
1 DVD/LD NO PROTECT
1 DVD/LD I PROTECT
1 DVD/LD PS : 21%
1 DVD/LD DC : 19%
(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.
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4 2
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T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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9
DSP-A595a
●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.
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.
(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
● 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.
TV
SPORTS DISCO ROCK CONCERT CONCERT HALL
FRONT PANEL
Main menu
ForwardReverse Sub menu ForwardReverse
7A
D
S
P
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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10
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
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])
: This shows that the device is not operating.
2. DSP 0dB
MAIN L/R, CENTER/LFE, FRONT L/R and REAR L/R pass through the DSP without being
processed.
: This shows that the device is not operating.
DIR2 CODEC.DA
AK4526A
YM3436
CODEC.AD AC3D2av(YSS918)
AK4526A
DECODER
DA
AK4320
1M SRAM
DSP
ANALOG IN
L/R L/R FRONT R
REAR L
REAR R
CENTER
SUBWOOFER
L/R
L/R
L/R
DIGITAL IN
FRONT L
MAIN R
MAIN L
DIR2 CODEC.DA
AK4526A
YM3436
CODEC.AD AC3D2av(YSS918)
AK4526A
DECODER
DA
AK4320
1M SRAM
DSP
ANALOG IN
L/R L/R FRONT R
REAR L
REAR R
CENTER
SUBWOOFER
L/R
L/R
L/R
DIGITAL IN
FRONT L
MAIN R
MAIN L
1 DVD/LD DSP 0DB
1 DVD/LD MAIN BYPAS
• INPUT : DVD/LD (Analog signal)
(Lch and Rch, 1KHz, –20dBV)
• OUTPUT : SPEAKERS
MAIN L : 23.8 dBV REAR L : 23.7 dBV
MAIN R : 23.8 dBV REAR R : 23.7 dBV
CENTER: 23.7 dBV
• INPUT : DVD/LD (Analog signal)
(Lch and Rch, 1KHz, –20dBV)
• OUTPUT : SPEAKERS
MAIN L : 23.7 dBV REAR L : 23.6 dBV
MAIN R : 23.7 dBV REAR R : 23.6 dBV
CENTER: 23.6 dBV
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Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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11
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
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])
2. YSS918
MAIN L/R are input to the DSP via AC3D2av, and then output to all channels without being processed.
3. DSP FULL BIT
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.
DIR2 CODEC.DA
AK4526A
YM3436
CODEC.AD AC3D2av(YSS918)
AK4526A
DECODER
DA
AK4320
1M SRAM
DSP
ANALOG IN
L/R
REAR L
REAR R
CENTER
SUBWOOFER
L/R
DIGITAL IN
FRONT R
FRONT L
MAIN R
MAIN L
L/R L/R
DIR2 CODEC.DA
AK4526A
YM3436
CODEC.AD AC3D2av(YSS918)
AK4526A
DECODER
DA
AK4320
1M SRAM
DSP
ANALOG IN
L/R FRONT R
REAR L
REAR R
CENTER
SUBWOOFER
L/R
L/R
L/R
L/R
DIGITAL IN
FRONT L
MAIN R
MAIN L
: This shows that the device is not operating.
2 DVD/LD YSS918SRAM
2 DVD/LD YSS918
2 DVD/LD DSP FULL
L/R
L/R
L/R
• INPUT : DVD/LD (Analog signal)
(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
• INPUT : DVD/LD (Analog signal)
(Lch and Rch, 1KHz, –20dBV)
• 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
• 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
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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12
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.
1. STATUS(BINARY FORM)
AC-3 (DOLBY DIGITAL) decoded signals are output to each channel via AC3D2av.
AC-3 Status Info. : bit7 6 5 4 3 2 1 0
(Invalid in DTS) 1 0 0 00000
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
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])
2. EFFECT OFF
MAIN L/R are bypassed and output.
DIR2 CODEC.DA
AK4526A
YM3436
CODEC.AD AC3D2av(YSS918)
AK4526A
DECODER
DOLBY DIGITAL
or
PRO LOGIC
or
DTS
or
DTS
DA
AK4320
1M SRAM
DSP
ANALOG IN
REAR L
REAR R
CENTER
SUBWOOFER
L/R
DIGITAL IN
MAIN R
MAIN L
LS/RSLS/RS
C/LFEC/LFE
DIR2 CODEC.DA
AK4526A
YM3436
CODEC.AD AC3D2av(YSS918)
AK4526A
DECODER
DOLBY DIGITAL
or
PRO LOGIC
DA
AK4320
1M SRAM
DSP
ANALOG IN
C
S
C
SREAR L
REAR R
CENTER
L/R
DIGITAL IN
MAIN R
MAIN L
: This shows that the device is not operating.
4 DVD/LD P. LGC C:L
4 DVD/LD EFFECT OFF
3 DVD/LD 3T00000001
• INPUT : DVD/LD (Analog signal)
(Lch and Rch, or Lch only, 1KHz, –20dBV)
• 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
REAR R : –6.5 dBV REAR R : –6.2 dBV
bit 0 bit 7
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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13
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.
SUB MENU CENTER SP OUTPUTLFE/BASS
MAIN
LEVEL
MAIN SPREAR SP
REMOTE
CODE
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
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.
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.
The analog switches in each submenu are set as follows:
Purpose of the submenu as follows:
5 DVD/LD MAIN:S 0DB
5 DVD/LD B:MAIN C:N
5 DVD/LD C:NONE
5 DVD/LD MAIN:L 0DB
5 DVD/LD LFE/B:MAIN
5 DVD/LD C:S REAR:S
5 DVD/LD MAIN:L —10
5 DVD/LD LFE/B:SWFR
5 DVD/LD FRONT MIX
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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14
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.
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.
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.
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.
(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.
6 DVD/LD DISP CHECK
6 DVD/LD 9902161625
7 DVD/LD TEST ALL
7 DVD/LD TEST MAINR
7 DVD/LD TEST LFE
8 DVD/LD PRESET INH
8 DVD/LD PRESET RES
7 DVD/LD TEST MAINL
7 DVD/LD TEST REARR
7 DVD/LD TEST CNTR
7 DVD/LD TEST REARL
Initial display All segments turn off All segments turn on
Segments light in lattice formRelease date display
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2
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4 2
9 8
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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15
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.
Press the "CONCERT HALL "key.
K1/K2/K3/K4: Panel key on main unit
See Table 1.
Turning the rotary encoder.
SI:Tuner signal level
Turning the rotary encoder.
DC: DC protection value
(normal value: 1-13)
Press the "CONCERT HALL"key.
PS: Power voltage protection value
Table 1
(normal value: 28-54)
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.
Cautions:
K1 K2 K3 K4
9 DVD/LD AD DATACHK
9 DVD/LD K99999999
9 DVD/LD SI 0
9 DVD/LD DC 7
9 DVD/LD PS 40
Press the "CONCERT HALL"key.
AD Value 0112336516784
TAPE/MD MON
/EXT. DECODER
ROCK
CONCERT
EFFECT
CONCERT
HALL
/DTS
SURROUND
SET
MENU
ENHANCED
INPUT MODE
MOVIE
THEATER
–+
MONO
MOVIE TV
SPORTS DISCO
K1
K2
K3
K4
TIME/
LEVEL
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2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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16
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 0]
<1st Byte>
acmod: If it is 1000B or more with DTS 7.1 signal, the DSP block will be muted.
<2nd Byte>
[Note]
<3rd Byte>
<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.
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
10 DVD/LD 0 00000000
10 DVD/LD 3 00000000
10 DVD/LD 6 00000000
10 DVD/LD 1 00000000
10 DVD/LD 4 00000000
10 DVD/LD 7 00000000
10 DVD/LD 2 00000000
10 DVD/LD 5 00000000
10 DVD/LD 8 00000000
10 DVD/LD 9 00000000
bit7 AC-3 decode OK bit3 Demodulator muting (without RF signal)
bit6 DTS decode OK bit2 IEC958 digital format error
bit5 Red DTS record
(Flashes and lights) bit1 IEC958 commercial use device bit
bit4 1 for audio other than PCM
linear audio bit0 IEC958 digital data bit
bit7 Mute request bit3 acmod
0000B:1+1 0001B:1/0
0010B:2/0 0011B:3/0
0100B:2/1 0101B:3/1
0110B:2/2 0111B:3/2
1000B:7.1
bit6 fs bit2
bit5 000B:Analog 001B:32kHz
010B:44.1kHz 011B:48kHz
Others:Don't care
bit1
bit4 bit0
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.
Indicate bit
3210
7654
00000
10001
20010
30011
40100
50101
60110
70111
81000
91001
A1010
B1011
C1100
D1101
E1110
F1111
bit 7 6 5 4 3 2 1 0
Indicate 0 0
1st 2nd 3rd 4thSTATUS
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7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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17
DSP-A595a
11 DVD/LD S-VER:Z08B
Main microprocessor check sum
DSP microprocessor check sum
Main microprocessor version
DSP microprocessor version
One suffix letter is for compatibility of communications between the main
and DSP microprocessors.
* Use microprocessors with the same suffix.
EXIT
✽1
Tuner Mode V2 (Port 96) 0*11*20*31*4
Tuner Mode V1 (Port 95) 0011
*1 AM:531–1611kHz/9kHz FM: 76.0–90.0MHz/100kHz (J model)
*2 AM:530–1710kHz/10kHz FM: 87.5–107.9MHz/200kHz (U, C models)
*3 AM:531–1611kHz/9kHz FM: 87.5–108.0MHz/50kHz (R,T, A, B, G, L models)
*4 AM: 530-1710kHz/10kHz FM:87.5-108.0 MHz/100kHz (R,T models)
✽2
bit76543210
10000000
Always absent (0)
Always absent (0)
Tuner Mode V1 (✽1)
Tuner Mode V2 (✽1)
Always absent (0)
Always absent (0)
Model Type RDS (✽2)
Model Type DSP-A (✽2)
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
11 DVD/LD S-SM:XXXXX
11 DVD/LD M-VER:Z04B
11 DVD/LD P:00000000
Model Type DSP-A(Port 83) 1 DSP-A595a 0 RX-V595aRDS 0 RX-V595a
HTR-5150
01 0
Model Type RDS(Port 70)
Hi=1, Low=0
Hi=1, Low=0
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4 2
9 8
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Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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18
DSP-A595a
■FACTORY PRESET
All of the system settings are initially set from the factory as follows.
●
INPUT (VIDEO) DVD/LD (DVD/LD)
● EFFECT LEVEL
EFFECT CHANNEL PRESET VALUE
CENTER 0 dB
RIGHT SURROUND 0 dB
LEFT SURROUND 0 dB
SUBWOOFER 0 dB
● 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
● SET MENU
No. SET MENU PRESETVALUE
8. DTS LFE LEVEL [DTS LFE] 0 dB
7. DYNAMIC RANGE [D.RNG] MAX
6. DOLBY DIGITAL LFE LEVEL [D. D. LFE] 0 dB
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)
9. CENTER DELAY [C. DELAY] 0 ms
11.
10. INPUT MODE (TV/DBS) [INPUT] AUTO
MEMORY GUARD [GUARD] OFF
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

19
DSP-A595a
Confirmation of Idling Current of Main Amplifier
•Right after power is turned on, confirm that the voltage across the
terminals of R688(Main Lch),R690(Main Rch), R692(Center),
R694(Rear Lch), R696(Rear Rch) are between 0.1mVand 5.0mV.
•If it exceeds 5.0mV, open (cut off) R571 (Main Lch), R577 (Main
Rch), R589 (Center), R595 (Rear Lch), R583 (Rear Rch) and
reconfirm the voltage again.
•Confirm that the voltage is 0.25mV ~ 15.0mV after 60 minutes.
■AMP ADJUSTMENT
Note)
•If R571, R577, R589, R595 and
R583 have already been cut off
and idling current does not flow,
reconnect R571, R577, R589,
R595 and R583.
•Q521 ~ Q525 are transistors for
temperature correction.
Apply silicone grease to contact
surface with the heat sink.
R571(Lch)
R577(Rch)
R589(Cch)
R595(RLch)
R583(RRch)
R583
R692
R595
R589
MAIN (1)
MAIN (7)
Q523
Q525
Q524
Q522
Q521
R696
R694
R690
R688
R577
R571
Front Panel
0.1mV ~ 5.0mV
(DC)
R688(Lch)
R690(Rch)
R692(Cch)
R694(RLch)
R696(RRch)
Cut off
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com