Service Manual
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...3*""ภࠩ (20 Hz to 20 kHz) PHONO MM 0.5 dB MC 0.5 dB Total Harmonic Distortion 20 Hz to 20 kHz) CD BAL to product improvements. U.S.A. Canadian model R .......... Australian model B .......... Singapore model J Japanese model • DIMENSIONS / ੇ&#... (5/8") 1 6 (1/8") 3 435 (17-1/8") Unit: mm (inch) ୯ҐɿNNʢΠϯνʣ 7 A-S2000 Chinese model K .......... British model G .......... A-S2000 I SPECIFICATIONS I General / ૯߹ Power Supply U, C models AC 120 V, 60 Hz R, L models AC 110/120/220...
...3*""ภࠩ (20 Hz to 20 kHz) PHONO MM 0.5 dB MC 0.5 dB Total Harmonic Distortion 20 Hz to 20 kHz) CD BAL to product improvements. U.S.A. Canadian model R .......... Australian model B .......... Singapore model J Japanese model • DIMENSIONS / ੇ&#... (5/8") 1 6 (1/8") 3 435 (17-1/8") Unit: mm (inch) ୯ҐɿNNʢΠϯνʣ 7 A-S2000 Chinese model K .......... British model G .......... A-S2000 I SPECIFICATIONS I General / ૯߹ Power Supply U, C models AC 120 V, 60 Hz R, L models AC 110/120/220...
Service Manual
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A-S2000 G Factory Reset Set back to the ON position. (Fig. 7) 2. Turn the "BALANCE" knob clockwise fully and then while pressing down the "AUDIO MUTE" switch, set the "POWER ON/OFF" switch to the factory setting (INPUT: CD BAL). 1. Set the POWER ON/OFF switch to the OFF position to end. 165 6%*0 .65 108&30/ 0 0 JHʣ */165 JHʣ ʠ108&30/0 0 "BALANCE" knob "POWER ON/OFF" switch Fig. 7 "BALANCE" knob "AUDIO MUTE" switch A-S2000 27 The INPUT selector LED "CD BAL" will light up and the normal operation will be restored. (Fig. 7) 3.
A-S2000 G Factory Reset Set back to the ON position. (Fig. 7) 2. Turn the "BALANCE" knob clockwise fully and then while pressing down the "AUDIO MUTE" switch, set the "POWER ON/OFF" switch to the factory setting (INPUT: CD BAL). 1. Set the POWER ON/OFF switch to the OFF position to end. 165 6%*0 .65 108&30/ 0 0 JHʣ */165 JHʣ ʠ108&30/0 0 "BALANCE" knob "POWER ON/OFF" switch Fig. 7 "BALANCE" knob "AUDIO MUTE" switch A-S2000 27 The INPUT selector LED "CD BAL" will light up and the normal operation will be restored. (Fig. 7) 3.
Service Manual
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A-S2000 G Version Information 5IFGJSNXBSFWFSTJPOPGUIFNJDSPQSPDFTTPSJTJOEJ DBUFE • Operation procedures Turn the ... ON/OFF" switch "TREBLE" knob "BALANCE" knob "AUDIO MUTE" switch MAIN DIRECT (26 = 64) 0 0 0 0 0 0 0 Input selector LED / */165 Binary number (BCD) [Lit: 1, Off: 0 LINE 2 LINE 1 CD BAL CD TUNER (25 = 32) (24 = 16) (23 = 8) (22 = 4) (21 = 2) 1 0 0 0 1 1 0 0 0 1 1 0 0 1 0 1 0 0 1 0 1 0 0 1 1 1 0 0 1 1 1 0 1 0 0 • • • Firmware version PHONO (20 = 1) 0 1 0 1 0 1 0 Decimal number / ਐ...
A-S2000 G Version Information 5IFGJSNXBSFWFSTJPOPGUIFNJDSPQSPDFTTPSJTJOEJ DBUFE • Operation procedures Turn the ... ON/OFF" switch "TREBLE" knob "BALANCE" knob "AUDIO MUTE" switch MAIN DIRECT (26 = 64) 0 0 0 0 0 0 0 Input selector LED / */165 Binary number (BCD) [Lit: 1, Off: 0 LINE 2 LINE 1 CD BAL CD TUNER (25 = 32) (24 = 16) (23 = 8) (22 = 4) (21 = 2) 1 0 0 0 1 1 0 0 0 1 1 0 0 1 0 1 0 0 1 0 1 0 0 1 1 1 0 0 1 1 1 0 1 0 0 • • • Firmware version PHONO (20 = 1) 0 1 0 1 0 1 0 Decimal number / ਐ...
Service Manual
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A-S2000 IC504: LC709004A (FRONT P.C.B.) Serial parameter extension Pin Port Name No. 24 P00 23 P01 22 P02 21 P03 20 P04 19 P05 18 P06 17 ... MG MG MG I_BAS I_TRE EXAD I_ISEL I_VOL I/O Detail of Function O I SP_AB rotary SW I HP_TRIM rotary SW I TREBLE, BASS, L/R BALANCE reference of Function O FUNCTION LED CD O FUNCTION LED TUNER O FUNCTION LED LINE1 O FUNCTION LED LINE2 O FUNCTION LED BALANCE O FUNCTION LED PHONO O FUNCTION LED MAIN_DIRECT O LED MUTE O O Treble control O Bass control O Initial...
A-S2000 IC504: LC709004A (FRONT P.C.B.) Serial parameter extension Pin Port Name No. 24 P00 23 P01 22 P02 21 P03 20 P04 19 P05 18 P06 17 ... MG MG MG I_BAS I_TRE EXAD I_ISEL I_VOL I/O Detail of Function O I SP_AB rotary SW I HP_TRIM rotary SW I TREBLE, BASS, L/R BALANCE reference of Function O FUNCTION LED CD O FUNCTION LED TUNER O FUNCTION LED LINE1 O FUNCTION LED LINE2 O FUNCTION LED BALANCE O FUNCTION LED PHONO O FUNCTION LED MAIN_DIRECT O LED MUTE O O Treble control O Bass control O Initial...
Service Manual
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... L/R IC301 RY_L2 INPUT SELECTOR IC409 ATT.6 4 PRE OUT BUFFER AMP. A B C D E F G H I J A-S2000 1 I BLOCK DIAGRAM BALANCE • See page 59 → SCHEMATIC DIAGRAM CD BAL L/R HOT (POSITIVE PHASE) BUFFER AMP. RY_HP RY_BAL 32 IC502 17 5 RY_CD 26 RY_TU 27 RY_L1 28 MICRO PROCESSOR 16...→ SCHEMATIC DIAGRAM RY_BYP RY402 HOT(+) RY_DIR RY404 MAIN DIRECT LINE AMP. COLD(-) RY401 IC413 IC302 IC303 RY403 FLOATING BALANCED POWER AMPLIFIER FRONT • See page 64-66 → SCHEMATIC DIAGRAM SPEAKER DRIVER HOT (POSITIVE PHASE) SIDE SPCH A L/R CH RY201/R111...
... L/R IC301 RY_L2 INPUT SELECTOR IC409 ATT.6 4 PRE OUT BUFFER AMP. A B C D E F G H I J A-S2000 1 I BLOCK DIAGRAM BALANCE • See page 59 → SCHEMATIC DIAGRAM CD BAL L/R HOT (POSITIVE PHASE) BUFFER AMP. RY_HP RY_BAL 32 IC502 17 5 RY_CD 26 RY_TU 27 RY_L1 28 MICRO PROCESSOR 16...→ SCHEMATIC DIAGRAM RY_BYP RY402 HOT(+) RY_DIR RY404 MAIN DIRECT LINE AMP. COLD(-) RY401 IC413 IC302 IC303 RY403 FLOATING BALANCED POWER AMPLIFIER FRONT • See page 64-66 → SCHEMATIC DIAGRAM SPEAKER DRIVER HOT (POSITIVE PHASE) SIDE SPCH A L/R CH RY201/R111...
Service Manual
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... . Location Ref no . Location Ref no . RY_SPA+ RY_SPB+ -12C FRONT (12) (CB59) CB201 FUNCTION (1) (W3005) CB202 45 18 FUNCTION (1) (W3006) RY_SPA+ RY_SPB+ -12C FUNCTION (3) (W3) A B C D E F G H I J A-S2000 1 I PRINTED CIRCUIT BOARDS BALANCE P.C.B. (Side A) 2 HOT 2 1 3 GND GOLD INPUT CD BAL R L • Semiconductor Location Ref no.
... . Location Ref no . Location Ref no . RY_SPA+ RY_SPB+ -12C FRONT (12) (CB59) CB201 FUNCTION (1) (W3005) CB202 45 18 FUNCTION (1) (W3006) RY_SPA+ RY_SPB+ -12C FUNCTION (3) (W3) A B C D E F G H I J A-S2000 1 I PRINTED CIRCUIT BOARDS BALANCE P.C.B. (Side A) 2 HOT 2 1 3 GND GOLD INPUT CD BAL R L • Semiconductor Location Ref no.
Service Manual
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... 6.4 5.8 5.8 6.4 5.8 5.8 0 0 0.3 0.3 0.3 25.2 24.7 1.0 25.7 1.0 0.4 0.4 1.0 1.0 0.5 -0.2 0 -0.7 -25.1 -24.5 -0.2 -0.7 -25.4 -25.7 -24.5 -25.0 F G H CD BAL L 12.6 0 IC201 0 0 -12.5 0 IC201 0 0 -11.9 -11.9 I J K L M N A-S2000 W2001 CB203 Page 66 H2 to FRONT (12)_CB59 Page 62 H8 to FUNCTION (3)_W3 CB201 CB202 Page 60 K2 to FUNCTION... (1)_W3005 Page 60 K2 to FUNCTION (1)_W3006 IC201: NJM2068MD-TE2 Dual operational amplifier OUT1 1 ...
... 6.4 5.8 5.8 6.4 5.8 5.8 0 0 0.3 0.3 0.3 25.2 24.7 1.0 25.7 1.0 0.4 0.4 1.0 1.0 0.5 -0.2 0 -0.7 -25.1 -24.5 -0.2 -0.7 -25.4 -25.7 -24.5 -25.0 F G H CD BAL L 12.6 0 IC201 0 0 -12.5 0 IC201 0 0 -11.9 -11.9 I J K L M N A-S2000 W2001 CB203 Page 66 H2 to FRONT (12)_CB59 Page 62 H8 to FUNCTION (3)_W3 CB201 CB202 Page 60 K2 to FUNCTION... (1)_W3005 Page 60 K2 to FUNCTION (1)_W3006 IC201: NJM2068MD-TE2 Dual operational amplifier OUT1 1 ...
Service Manual
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A B C D E F G H I A-S2000 1 FUNCTION 1/3 2 3 Page 65 M5 to FRONT (10)_W1002 CB301 4 5 6 12.0 -11.9 -11.9 -11.9 -11.8 -11.9 -11.9 -11.9 CD L 24.6 25.7 6.4 25.1 24.6 0.9 24.6 1.1 5.8 5.8 5.8 0 0.3 0.3 5.8 0 0.3 0.1 0.9 24.6 25.6 1.0 0 5.8 6.3 0.3 0.3 5.8 0 0.3 -0.4 -0.1 0.5 1.1 0.9 0.2 1.1 0.5 0 -0.9 -0.6 -0.9 -25.0 -0.6 -24.5 -24.5 -24.8 -25.6 25.7 0.9 0.3 25.7 1.1 0.6 0 -0.9 -25.6 0 -0.6 -25.6 24.6 25.7 ..._W1003 M N IC301: NJM2068MD-TE2 Dual operational amplifier OUT1 1 -IN1 2 +IN1 3 -VCC 4 +- +- 8 +VCC 7 OUT2 6 ...
A B C D E F G H I A-S2000 1 FUNCTION 1/3 2 3 Page 65 M5 to FRONT (10)_W1002 CB301 4 5 6 12.0 -11.9 -11.9 -11.9 -11.8 -11.9 -11.9 -11.9 CD L 24.6 25.7 6.4 25.1 24.6 0.9 24.6 1.1 5.8 5.8 5.8 0 0.3 0.3 5.8 0 0.3 0.1 0.9 24.6 25.6 1.0 0 5.8 6.3 0.3 0.3 5.8 0 0.3 -0.4 -0.1 0.5 1.1 0.9 0.2 1.1 0.5 0 -0.9 -0.6 -0.9 -25.0 -0.6 -24.5 -24.5 -24.8 -25.6 25.7 0.9 0.3 25.7 1.1 0.6 0 -0.9 -25.6 0 -0.6 -25.6 24.6 25.7 ..._W1003 M N IC301: NJM2068MD-TE2 Dual operational amplifier OUT1 1 -IN1 2 +IN1 3 -VCC 4 +- +- 8 +VCC 7 OUT2 6 ...
Service Manual
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... VOLUME W5005A W5005B FRONT (5) CB512 W5008 W5009A INPUT SELECTOR W5009B AUDIO MUTE FRONT (7) W5007A W5007B TREBLE BASS BALANCE +/- +/- A B C D E F G H I J K L M N A-S2000 1 FRONT 1/3 POINT A-1 XL501 (Pin 23 of IC502) POINT A-2 A-3 1 / Pin 1, 2 / Pin 3 of CB501 CB501 +5M 1 1 2 CB501 /RES 2 2 Writing port POWER... OFF POWER ON CB515 0.1 4.6 0 FRONT (9) POWER indicator CB507 W5004 1.9 0.1 W5006 CB509 INPUT indicator CD TUNER LINE 1 LINE 2 CD BAL PHONO MAIN DIRECT AUDIO MUTE 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 3.2 5.0 5.0 5.0 5.0 ...
... VOLUME W5005A W5005B FRONT (5) CB512 W5008 W5009A INPUT SELECTOR W5009B AUDIO MUTE FRONT (7) W5007A W5007B TREBLE BASS BALANCE +/- +/- A B C D E F G H I J K L M N A-S2000 1 FRONT 1/3 POINT A-1 XL501 (Pin 23 of IC502) POINT A-2 A-3 1 / Pin 1, 2 / Pin 3 of CB501 CB501 +5M 1 1 2 CB501 /RES 2 2 Writing port POWER... OFF POWER ON CB515 0.1 4.6 0 FRONT (9) POWER indicator CB507 W5004 1.9 0.1 W5006 CB509 INPUT indicator CD TUNER LINE 1 LINE 2 CD BAL PHONO MAIN DIRECT AUDIO MUTE 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 3.2 5.0 5.0 5.0 5.0 ...
Service Manual
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CD BAL - - - T (SKIP-) - - A (PAUSE) - - VOL+ INPUT Q MUTE INPUT W VOL- PRESET G (-) - - VOL+ INPUT Q MUTE INPUT W VOL- OPEN/CLOSE - - A-S2000 89 A-S2000 • KEY LAYOUT 2 5 8 11 14 17 20 24 25 26 27 28 • KEY CODE RAS21 (U, C, R, T, A, B, G, L models) No. Customer code 1 - 2 85 3 - 4 - 5 7A85 6 - 7 - 8 7A85 9 - 10 - 11 ...
CD BAL - - - T (SKIP-) - - A (PAUSE) - - VOL+ INPUT Q MUTE INPUT W VOL- PRESET G (-) - - VOL+ INPUT Q MUTE INPUT W VOL- OPEN/CLOSE - - A-S2000 89 A-S2000 • KEY LAYOUT 2 5 8 11 14 17 20 24 25 26 27 28 • KEY CODE RAS21 (U, C, R, T, A, B, G, L models) No. Customer code 1 - 2 85 3 - 4 - 5 7A85 6 - 7 - 8 7A85 9 - 10 - 11 ...
