Yamaha DSP-A595 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.
100661
AV AMPLIFIER
DSP-A595
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 .................................................................. 20~29
DISPLAY DATA ........................................................... 30
BLOCK DIAGRAM .................................................. 31~32
PRINTED CIRCUIT BOARD ................................... 33~46
SCHEMATIC DIAGRAM ......................................... 47~52
PARTS LIST ............................................................ 53~66
REMOTE CONTROL TRANSMITTER ......................... 67
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

1
DSP-A595
■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
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

2
DSP-A595
▼ T model
▼B model
▼G model
▼R model
■REAR PANELS
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

3
DSP-A595
■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 110mV
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 Out 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 12.4kg(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
Manufactured under license from Dolby Laboratories
Licensing Corporation."DOLBY" , "AC-3", "Pro Logic", and
the double-D symbol are trademarks of Dolby
Laboratories Licensing Corporation. Copyright 1992 Dolby
Laboratories, inc. All rights reserved.
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

4
DSP-A595
●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
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
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DSP-A595 Parts List for Carbon Resistors
160 Ω
180 Ω
200 Ω
220 Ω
270 Ω
330 Ω
390 Ω
430 Ω
470 Ω
510 Ω
560 Ω
680 Ω
820 Ω
910 Ω
1.0 kΩ
1.2 kΩ
1.5 kΩ
1.8 kΩ
2.0 kΩ
2.2 kΩ
2.4 kΩ
2.7 kΩ
3.0 kΩ
3.3 kΩ
3.6 kΩ
3.9 kΩ
4.7 kΩ
5.1 kΩ
5.6 kΩ
6.8 kΩ
8.2 kΩ
9.1 kΩ
1.0 Ω
1.8 Ω
2.2 Ω
3.3 Ω
4.7 Ω
5.6 Ω
10 Ω
15 Ω
22 Ω
27 Ω
33 Ω
39 Ω
47 Ω
56 Ω
68 Ω
75 Ω
82 Ω
91 Ω
100 Ω
110 Ω
120 Ω
150 Ω
HJ35 8680
HJ35 8820
HF45 9100
HJ35 9120
HJ35 9150
HJ35 9180
HJ35 9220
HJ35 9330
HJ35 9390
HJ35 9470
HF85 8680
HF85 8820
HF45 9100
❊
HF85 9150
HF85 9180
HF85 9220
HF85 9330
❊
HF85 9470
1/4W Type
HJ35
10mm 5mm
1/4W Type
HF45
1/6W Type
HF85
Value 1/4W Type Part No. 1/6W Type Part No. Value 1/4W Type Part No. 1/6W Type Part No.
❊: Not available 1992
HJ35 3100
HJ35 3180
HJ35 3220
HJ35 3330
HJ35 3470
HJ35 3560
HF45 4100
HJ35 4150
HF45 4220
HJ35 4270
HF45 4330
HJ35 4390
HF45 4470
HF45 4560
HF45 4680
HF45 4750
HF45 4820
HF45 4910
HF45 5100
HJ35 5110
HF45 5120
HF45 5150
HF85 3100
❊
HF85 3220
HF85 3330
HF85 3470
HF85 3560
HF45 4100
HF85 4150
HF45 4220
HF85 4270
HF45 4330
HF85 4390
HF45 4470
HF45 4560
HF45 4680
HF45 4750
HF45 4820
HF45 4910
HF45 5100
HF85 5110
HF45 5120
HF45 5150
10 kΩ
11 kΩ
12 kΩ
13 kΩ
15 kΩ
18 kΩ
22 kΩ
24 kΩ
27 kΩ
30 kΩ
33 kΩ
36 kΩ
39 kΩ
47 kΩ
51 kΩ
56 kΩ
62 kΩ
68 kΩ
82 kΩ
91 kΩ
100 kΩ
110 kΩ
HF45 7100
HF45 7110
HJ35 7120
HF45 7130
HF45 7150
HF45 7180
HF45 7220
HF45 7240
HJ35 7270
HF45 7300
HF45 7330
HF45 7360
HF45 7390
HF45 7470
HF45 7510
HF45 7560
HF45 7620
HF45 7680
HF45 7820
HF45 7910
HF45 8100
HF45 8110
HF45 8120
HF45 8150
HF45 8180
HJ35 8220
HF45 8270
HF45 8300
HF45 8330
HJ35 8390
HF45 8470
HJ35 8560
HF45 7100
HF45 7110
HF85 7120
HF45 7130
HF45 7150
HF45 7180
HF45 7220
HF45 7240
HF85 7270
HF45 7300
HF45 7330
HF45 7360
HF45 7390
HF45 7470
HF45 7510
HF45 7560
HF45 7620
HF45 7680
HF45 7820
HF45 7910
HF45 8100
HF45 8110
HF45 8120
HF45 8150
HF45 8180
HF85 8220
HF45 8270
HF45 8300
HF45 8330
HF85 8390
HF45 8470
HF85 8560
❊
HF45 5180
HF45 5200
HF45 5220
HF45 5270
HF45 5330
HF45 5390
HF45 5430
HF45 5470
HF45 5510
HF45 5560
HF45 5680
HF45 5820
HF45 5910
HF45 6100
HF45 6120
HF45 6150
HF45 6180
HF85 6200
HF45 6220
HF85 6240
HF45 6270
HF45 6300
HF45 6330
HF85 6360
HF45 6390
HF45 6470
HF45 6510
HF45 6560
HF45 6680
HF45 6820
HF45 6910
HJ35 5160
HF45 5180
HF45 5200
HF45 5220
HF45 5270
HF45 5330
HF45 5390
HF45 5430
HF45 5470
HF45 5510
HF45 5560
HF45 5680
HF45 5820
HF45 5910
HF45 6100
HF45 6120
HF45 6150
HF45 6180
HJ35 6200
HF45 6220
HJ35 6240
HF45 6270
HF45 6300
HF45 6330
HJ35 6360
HF45 6390
HF45 6470
HF45 6510
HF45 6560
HF45 6680
HF45 6820
HF45 6910
120 kΩ
150 kΩ
180 kΩ
220 kΩ
270 kΩ
300 kΩ
330 kΩ
390 kΩ
470 kΩ
560 kΩ
680 kΩ
820 kΩ
1.0 MΩ
1.2 MΩ
1.5 MΩ
1.8 MΩ
2.2 MΩ
3.3 MΩ
3.9 MΩ
4.7 MΩ
■REMOTE CONTROL TRANSMITTER
SCHEMATIC DIAGRAM
67
– – – – : No Code
List of the fixed code
Key
No. Key MAME MODE
ID #
TV Cable/DSS VCR DVD Menu DVD/LD DSP CD Tape/MD AMP/Tuner
0037 2455 3072 – – – – 4545(DVD) – – – – 6187 8524(Tape) – – – –
1 CH1 CH1 CH1 7C-94 7A-15 7A-88 7A-15
2 CH2 CH2 CH2 7C-95 7A-16 7A-89 7A-16
3 CH3 CH3 CH3 7C-96 7A-18 7A-8A 7A-18
4 CH4 CH4 CH4 7C-97 7A-17 7A-8B 7A-17
5 CH5 CH5 CH5 7C-98 7A-54 7A-8C 7A-54
6 CH6 CH6 CH6 7C-99 7A-0F 7A-8D 7A-0F
7 CH7 CH7 CH7 7C-9A 7A-14 7A-8E 7A-14
8 CH8 CH8 CH8 7C-9B 7A-55 7A-8F 7A-55
9 CH9 CH9 CH9 7C-9C 7A-13 7A-90 7A-13
DSP Shift of only Ten key in DSP Mode – – – – Shift of only Ten key in DSP Mode
0 CH0 CH0 CH0 7C-93 7A-87 7A-91 7A-87
POWER 7A-1D Power Power 7A-1D 7A-1D
STANDBY 7A-1E 7A-1E
ENTER CH Select CH Select CH Select 7C-9D – – – – 7A-12 – – – – – – – – 7A-12
CLEAR – – – – +100 – – – – 7C-9F – – – – 7A-85 – – – – – – – – 7A-85
EFFECT Surround 7A-56 7A-56
CH+ CH+ CH+ CH+ 7C-8B 7A-10 7A-4F – – – – 7A-10
CH– CH– CH– CH– 7C-8A 7A-11 7A-50 – – – – 7A-11
MUTE Mute 7A-1C 7A-1C
VOL+ 7A-1A 7A-1A
TV VOL– TV VOL– TV VOL–
TV VOL+ TV VOL+ TV VOL+
SKIP– – – – – Left – – – – 7C-B5 7C-B9 7A-53 7A-0B 7A-07 7A-53
DISPLAY Display Display Display 7C-9E 7C-A6 7A-C2 79-0B – – – – 7A-C2
SLEEP Sleep 7A-57 7A-57
PLAY VCR Play Menu Select Play 7C-B8 7C-82 – – – – 7A-08 7A-00 – – – –
PAUSE VCR Pause Up Pause 7C-B4 7C-83 7A-98 7A-09 – – – – 7A-98
STOP VCR Stop Down Stop 7C-B3 7C-85 7A-99 7A-09 7A-03 7A-99
SKIP+ – – – – Right – – – – 7C-B6 7C-BA 7A-52 7A-0A 7A-40 7A-52
VOL– 7A-1B 7A-1B
TV INPUT TV Input – – – – TV Input 7A-06 – – – –
TV POWER TV Power TV Power
REC VCR REC – – – – REC – – – – – – – – – – – – – – – – 7A-04 – – – –
FF VCR FF Recall FF 7C-B7 7C-AE 7A-58 7A-0C 7A-02 7A-58
REW VCR REW – – – – REW 7C-AC 7C-AB 7A-59 7A-0D 7A-01 7A-59
MENU – – – – Menu – – – – 7C-B2 7C-AD 7A-9C – – – – – – – – 7A-9C
TITLE – – – – – – – – – – – – 7C-B1 7C-AA 7A-86 – – – – – – – – 7A-86
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
Key arrangement
K10 K20 K30
K9 K19 K29
K8 K18 K28
K7 K17 K27
K6 K16 K26
K5 K15 K25
K4 K14 K24
K3 K13 K23
K2 K12 K22
K1 K11 K21
9:AMP/TUNER
8:MD/TAPE
7:CD
6:DSP
1
14
13
12
11
10
9
8
7
6
5
4
3
2OSC1
PA6
PA7
PC0
PC1
PC2
PC3
LPRST
VSS
IRO
RESET
IRQ
VDD
OSC2
28
T2
R4
2
IC3
3
12.1V
D2
D3(2/2)
1SS181
D5
RLS-73
D4(1/2)
1SS184
D1
S1D303C-01
Q1
2SC3265
SLR-342VC
INDICATOR(RED_LED)
D3(1/2)
T1
X1 4MHz
D4(2/2)
1MΩ
62Ω
R2
47Ω
R3
37
35 34
28
26
27
23 29
21
19
22
30 20
36
33
25 24
31
32
10
18 17
11
12 13
15
79
46
13
16
14
8
5
2
220Ω
R1
2.0Ω(1/4W)
R7
10kΩ
R5
100kΩ
X2
4MHz
R6
C4
0.1µF
C3
0.1µF
C2
220µF
C1
47µF
BAT
1.5VX2 C5
0.1µF
15
16
17 /DATA
18 /BUSY
19 /INDI.
20
21
22
23
24
25/WAKE UP
26
27
PB0
PA5
PA4
PA3
PA2
PA1
PA0
PB7
PB6
PB5
PB4
PB3
PB2
PB1
5:DVD/LD
4:DVD_MENU
3:VCR
2:CABLE/DSS
1:TV
35 34 33 32 31 30/WAKE UP 29/DATA 28/BUSY 27/INDI 26 25 24 23 22 21 20 36 19
2 3 4 5 6 7 8 9
10
11
12 13 14 15 16 17
1
18
D0
P13 P12
P11
P10 P03 P02 P01 P00 P43 P42 P41 P40 P33 P32 P31
D1
P30
D3 D4 D5 D6 D7 D8 D9/TOUT P20 P21/INT RESET CNVSS XOUT XIN VSS VDCE VDD D2 CARR
COMMON
SET UP CHECK LINE
MODE
ROTARY SW
IC2:
SC501054DW(R,T)
SC501055DW(B,G)
IC2
IC1
M34570M4-081FP
K37
K36
K35
K34
K33
K32
K31
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

6
DSP-A595
■SELF DIAGNOSIS FUNCTION
1. PURPOSE AND OPERATION
The DSP-A595 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. YSS908–SRAM
2. YSS908
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-A595
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 information of the protection function 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.
Hold down the "INPUT MODE" and "+" keys simultaneously, and press the "STANDBY/ON" key; submenu
No. 1 of 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.
+– INPUT MODE
TIME/
LEVEL
SET
MENU
"+" key "INPUT MODE" key
FRONT PANEL
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8
DSP-A595
● 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) RELEASING METHOD
The diagnosis function can be released 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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9
DSP-A595
●Selection by using the remote control unit
The remote control codes in the menu list (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.
● 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.
(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, Sub-woofer)
¥ 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 (—10dB DOLBY DIGITAL LFE)
¥ CENTER DELAY : 0ms
TV
SPORTS DISCO ROCK CONCERT CONCERT HALL
FRONT PANEL
Main menu
ForwardReverse Sub menu ForwardReverse
D
S
P
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10
DSP-A595
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/SUBWOOFER, 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)
: This shows that the device is not operating.
2. DSP 0dB
MAIN L/R, CENTER/SUBWOOFER/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
AK4526
YM3436
CODEC.AD AC3Dav(YSS908)
AK4526
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
AK4526
YM3436
CODEC.AD AC3Dav(YSS908)
AK4526
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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11
DSP-A595
No.2 DSP THROUGH
The input is automatically discriminated by signal detection and switched with priorities AC3>PCM
AUDIO>analog. There are the following three submenus.
1. YSS908-SRAM
MAIN L/R are input to the DSP via AC3Dav, pass through SRAM, and are then output to all channels without
being processed. (Remote control code 7A-89)
2. YSS908
MAIN L/R are input to the DSP via AC3Dav, and then output to all channels without being processed.
3. DSP FULL BIT
MAIN L/R are input to the DSP via AC3Dav, and then output to all channels without being processed.
The head margin is abolished, 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
AK4526
YM3436
CODEC.AD AC3Dav(YSS908)
AK4526
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
AK4526
YM3436
CODEC.AD AC3Dav(YSS908)
AK4526
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 YSS908SRAM
2 DVD/LD YSS908
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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12
DSP-A595
No.3 AC3 THROUGH
The input is digital signal only. AC3 (DOLBY DIGITAL) decoding operation is executed, according to the input source.
1. STATUS(BINARY FORM)
AC3 (DOLBY DIGITAL) decoded signals are output to each channel via AC3Dav.
No.4 PRO LOGIC
The input is automatically discriminated by PCM>analog. AC3 (DOLBY DIGITAL) is prohibited.
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 or analog. With analog, PCM audio or AC3 (DOLBY DIGITAL)
2/0 input, the L, R, C and S signals are PRO LOGIC decoded and output. With AC3 (DOLBY DIGITAL) other than
2/0, PRO LOGIC does not operate, and AC3 (DOLBY DIGITAL) playback is executed. (Remote control code 7A-8A)
2. EFFECT OFF
MAIN L/R are bypassed and output.
DIR2
CODEC.DA
AK4526
YM3436
CODEC.AD AC3Dav(YSS908)
AK4526
DECODER
DOLBY DIGITAL
or
PRO LOGIC
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
AK4526
YM3436
CODEC.AD AC3Dav(YSS908)
AK4526
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
AC3 Status Info. : bit 7 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 AC3 decode OK
• 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
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13
DSP-A595
No.5 SPEAKERS SET
The input is automatically discriminated by AC3>PCM>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: YSS908 menu is output.
SUB MENU REMOTE CENTER SP REAR SP MAIN SP MAIN LFE/BASS OUTPUT
LEVEL
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 responce and gain in the bass redirection mode.
2 MAIN:L 0DB Refference 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 effect the mixing circuit 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 responce 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.Sound in all signal widths
is output.
SMALL: Mode in which speakers with low bass-sound playback capability (small unit) are used.Signal of less than 90 Hz
is mixed with the channel specified by LFE/BASS.
NONE : Mode in which center speaker is not used.The center components with 3 dB subtracted are branched into MAIN
L/R.
LFE/B : MAIN
:Mode in which subwoofer speaker is not used.The subwoofer components with 4.5 dB subtracted are branched
into MAIN L/R. But because of the phase difference, the MAIN L/R output is not simpleminded add level.
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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14
DSP-A595
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 menu is used to reserve whether or not to set the back-up data for the effect level, delay time and so on to the
factory preset state. The Signal is processed with EFFECT OFF.
1. INHIBIT: The back-up data is not initialized. To keep the data set
by the user, check that this mode has been selected
and cancel the self diagnosis function.
2. RESERVED: When the self diagnosis function is canceled, the back-
up data is initialized to the factory preset state. For the
contents of the initialization, refer to page 18.
The protection data is also reset.
6 DVD/LD DISP CHECK
6 DVD/LD 9807150942
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 displayed. All segments are turned off
Segments ON in a lattice.
All segments are turned on
Release date displayed.
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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15
DSP-A595
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.
Turning the rotary encoder (input selector on the main unit) will switch the submenu.
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 "CONSERT HALL" key.
PS: Power voltage protection value
Table 1
(normal value: 28-54)
AD Value 0112336516784
TAPE/MD MON
/EXT. DECODER
ROCK
CONCERT
EFFECT
CONCERT
HALL
DIGITAL/
PRO LOGIC
SET
MENU
ENHANCED
INPUT MODE
MOVIE
THEATER
–+
MONO
MOVIE TV
SPORTS DISCO
K1
K2
K3
K4
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 CHECK
9 DVD/LD 33999999
9 DVD/LD SI 0
9 DVD/LD DC 7
9 DVD/LD PS 40
TIME/
LEVEL
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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16
DSP-A595
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/DTS signal from the first byte.
[STATUS 5-9] Displays the bit stream information contained in AC-3 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 1 during AC3 decode OK bit3 Demodulator muting (without RF signal)
bit6 1 during DTS decode OK bit2 IEC958 digital format error
bit5 1 during red DTS lock 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 4th
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

17
DSP-A595
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 V1 (Port 95) 0*11*21*3
Tuner Mode V2 (Port 96) 101
*1 AM:530—1710kHz/10kHz FM: 87.5—107.9MHz/200kHz (U, C models)
*2 AM:531—1611kHz/9kHz FM: 87.5—108.0MHz/50kHz (A, G, L models)
*3 AM: 530-1710kHz/10kHz FM:87.5-108.0 MHz/100kHz (R model)
✽2
bit76543210
00000000
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 RDS (Port 70) 0 RX-V595 0 DSP-A595 1 RX-V595RDS
010
Model Type DSP-A(Port 83)
Hi=1, Low=0
Hi=1, Low=0
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

18
DSP-A595
■FACTORY PRESET
All the settings of the system are initialized on shipping. The settings are 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
SUB WOOFER 0 dB
● DSP PROGRAM
INPUT DSP PROGRAM DELAY PRESET VALUE
CD PRO LOGIC 20ms
TUNER ENHANCED 20ms
TAPE/MD MOVIE THEATER 20ms
DVD/LD MONO MOVIE 49ms
TV/DBS TV SPORTS 9ms
VCR DISCO 40ms
PHONO ROCK CONCERT 16ms
V-AUX CONCERT HALL 44ms
● SET MENU
No. SET MENU PRESET VALUE
8. CENTER DELAY 0 ms
7. DYNAMIC RANGE MAX
6. LFE LEVEL 0 dB
1. CENTER SPEAKER LARGE
2. REAR SPEAKER LARGE
3. MAIN SPEAKER LARGE
4. LFE/BASS OUT SW (SUBWOOFER)
5. MAIN LEVEL NRML (NORMAL)
9. MEMORY GUARD OFF
10. INPUT MODE (TV/DBS) AUTO
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-A595
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