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Alto AMX-220 Service Manual
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Alto AMX-220 Service Manual

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Summary of Contents for Alto AMX-220

  • Page 2 ! " ! " # &&&&&&&&&&&&&&&&&&&&&& &&&&&& & &&&&&&&&&&&&&&&&&&&&&&& &&& &&&( ( ) * + &&&&&&&&&&&&&&&&&&&&&&&&&&&&&- - # . &&&&& &&&&&&&& &&& & &&&&&&& & / &&&&&& &&&&& &&& && &&&&&&& && & 1 2 ) %&& &&&&&& &&&&& &&& && &&&&&&& &&& 4 "...
  • Page 3 ! " # $ " %& & % ' ( ) %* + - # " " # # " # & % % %* . " ( ) ( # % ) %* # . . . 0 " &...
  • Page 4 " # % " " # " # & . # % % - # ( % " ; < 1 AAB < 1 C 2* 8 < , D 0 AE 5 $* 8 # ;B < 1 G * 8 ;;A* 8 "...
  • Page 5 ( ) * +...
  • Page 6 - # .
  • Page 13 1 2 ) " " : * 3 2 9 ) %% 2 9 ) %% : * 3...
  • Page 14 " 2 " 2 : * 3 2 9 ) %% 2 9 ) %% : * 3...
  • Page 15 " 2 ! " 2 : * 3 ) %% ! ) %% : * 3...
  • Page 16 " ! " : * 3 ) %% ! ) %% : * 3...
  • Page 17 " ; " " ; " : * 3 " ; ) %% " ; ) %% : * 3...
  • Page 18 # 2 " # 2 " : * 3 # 2 ) %% # 2 ) %% : * 3...
  • Page 19 ( ( (< " ( ( (< " : * 3 ( ( (< ) %%...
  • Page 20 4 " MAIN MIX OUTPUT AND PAN TEST ON LINE 1 8 ł ł œ ˝ FF, DSP mute ON. ı ł ı ł œ ˝ ß ł ł Ø “ ˆ ” ¿ ø ß ł ł ł ł MAIN MAX LEVEL set in “0”...

  • Page 21: Aux Sends

    AUX SENDS OUTPUT TEST ON LINE 1~8 ł ł œ ˝ ı ł FF, DSP mute ON. ı ł œ ˝ ß ł ł Ø “ ˆ ” ¿ ø ß ł ł ł ł AUX SEND set in center (0), MAIN MAX LEVEL set in “0”. ß...

  • Page 22: Main Mix Output

    ALT 3-4 OUTPUT TEST ON LINE 1~8 ł ł œ ˝ MUTE ALT3-4 ON, others all OFF, DSP MUTE ON. ı ł œ ˝ LEVEL of input channel in “0”, all EQ controls set in center (0). ł ß ł ł...
  • Page 23 CTRL ROOM OUTPUT TEST ON LINE 1~8 ł ł œ ˝ ł “MAIN MIX” of TO CTRL ROOM ON, others OFF ”DSP MUTE ON ł ł œ MUTE ALT 3-4 OFF, SOLO OFF. ß ł ˝ ı ł LEVEL of input channel in “0”, all EQ controls set in center (0). œ...
  • Page 24 CTRL ROOM ALT 3-4 OUT TEST ON LINE 1~8 ł ł œ ˝ ł “MUTE ALT 3-4” of TO CTRL ROOM ON, others OFF ` Set ATL3-4 on input channel ON, SOLO OFF. ı ł EVEL of input channel in “0”, all EQ controls set in center. œ...
  • Page 25 PHONES OUT TEST ON LINE 1~8 ł ł œ ˝ ł “MAIN MIX” of TO CTRL ROOM ON, others OFF ` ł ATL3-4 of input channel OFF, SOLO OFF ı ł LEVEL of input channel in “0”, all EQ controls in center (0). œ...
  • Page 26 CTRL ROOM OUT TEST ON TAPE IN ł ł œ ˝ ł “2TK IN” of TO CTRL ROOM ON, others OFF ` ı ł CONTRLO ROOM LEVEL in “0”, turn 2TK IN LEVEL to maximum. œ ˝ ł LEVEL set in minimum ( ) ß...
  • Page 27 MAIN MIX OUTPUT TEST ON TAPE IN ł ł œ ˝ ł “2TK TO MAIN MIX” ON, others OFF ”DSP MUTE ON. ı ł 2TK IN LEVEL to maximum, and MAIN MAX LEVEL in “0”. œ ˝ œ TAPE IN socket, output signal to MAIN MIX OUTPUT. ø...
  • Page 28 MAIN MIX OUTPUT LOW CUT TEST ON LINE 1~8 ł ł œ ˝ LOW CUT ON, MUTE ALT3-4 OFF, SOLO OFF, others OFF DSP MUTE ON. ı ł LEVEL of input channel in “0”, all EQ controls set in center. œ...
  • Page 29 MAIN MIX OUTPUT TEST ON TAPE IN ł ł œ ˝ “2TK TO MAIN MIX” ON, others OFF, DSP MUTE ON. ı ł 2TK IN LEVEL to maximum, and MAIN MAX LEVEL in “0”. œ ˝ LEVEL set in minimum ( ) ß...
  • Page 30 MAIN MIX OUTPUT AND BAL TEST ON LINE 9~16 ł ł œ ˝ ł OFF, DSP MUTE ON. ı ł LEVEL of input channel in “0”, all EQ controls in center (0). œ ˝ ł ß ł ł MAIN MAX LEVEL in “0”, others LEVEL set in minimum ( ). œ...
  • Page 31 ALT 3-4 OUTPUT TEST ON LINE 9~16 ł ł œ ˝ MUTE ALT3-4 ON, others OFF, DSP MUTE ON. ı ł LEVEL of input channel in “0”, all EQ controls in center (0). œ ˝ ł ß ł ł MAIN MAX LEVEL in “0”, others LEVEL set in minimum ( ). œ...
  • Page 32 LEVEL +4DBU/-10DBV TEST ON LINE 9~16 œ ˝ ß ł ø LINE 9~16. œ ˝ MAX MIX OUTPUT. ı ł ł ł œ ˝ OFF, LEVEL +4DBU/-10DBV ON, DSP MUTE ON. ł ı ł LEVEL of input channel in “0”, all EQ controls in center. œ...
  • Page 33 MAIN OUTPUT LEVEL +4dBu TEST œ ˝ ß ł ø Æ ˜ ¸ ` œ ˝ ı ł MAX MIX OUTPUT. ł ł œ ˝ OFF, MAIN OUTPUT LEVEL “MIC +4dBu” OFF, DSP MUTE ON. ł ı ł LEVEL of input channel in “0”, all EQ controls in center. œ...
  • Page 34 MAX MIX OUTPUT. ł ł œ ˝ OFF, MAIN OUTPUT LEVEL “MIC +4dBu” ON, DSP MUTE ON. ł ı ł LEVEL of input channel in “0”, all EQ controls in center. œ ˝ ł ß ł MAIN MAX LEVEL set in “0”, other LEVEL in minimum( ) The frequency response as following(Tolerance: D 2dBu ¿...
  • Page 35 SOLO TEST OF CTRL ROOM OUT ł ł œ ˝ ł “MAIN MIX” of TO CTRL ROOM ON, others OFF, DSP MUTE ON. ł ˘ ˙ ø SOLO ON and SOLO MODE OFF (green). ß ł ¿ ı ł LEVEL of input channel in “0”, all EQ controls in center. œ...
  • Page 36 EQ HI AND LOW TEST ON CH1~CH8 ł ł œ ˝ MUTE ALT3-4 OFF SOLO OFF ı ł TRIM to minimum counterclockwise, slide potentiometer in “0”, MID and œ ˝ FREQ are both set in center. Set HI and LOW of EQ to maximum (+15), center (0), minimum (-15) respectively. ß...
  • Page 37 EQ MID AND FREQ TEST ON LINE 1~8 ł ł œ ˝ MUTE ALT3-4 OFF SOLO OFF ı ł RIM to minimum in counterclockwise, slide potentiometer in “0”, HI and œ ˝ LOW set in center (0) ` ł ˜ ¨ ¿ 800Hz, 100Hz respectively.
  • Page 38 EQ HI AND LOW TEST ON LINE 9~16 ł ł œ ˝ MUTE ALT3-4 OFF SOLO OFF ı ł œ ˝ ł “ ˆ ” ¿ HI-MID and MID-LOW in center. ł ł ł Set HI and LOW of EQ to maximum (+15), center (0), minimum (-15) respectively. ß...
  • Page 39 EQ HI-MID AND MID-LOW TEST ON LINE 9~16 ł ł œ ˝ MUTE ALT3-4 OFF SOLO OFF ı ł œ ˝ “ ˆ ” ¿ ł ł ł LOW in center. ł HI-MID and MID-LOW EQ to maximum (+15), center (0), minimum (-15) respectively. ß...
  • Page 40 HUM AND NOISE TEST ł ł œ ˝ ł OFF(NO PUSH), DSP MUTE ON. ı ł MAIN MAX LEVEL in “10”(MAX), other LEVEL to minimum( ) œ ˝ ł turn TRIM to minimum, other knob in center. œ MAX MIX OUTPUT, and cancel the input signal. ß...
  • Page 41 OFF(NO PUSH), DSP MUTE ON. ı ł LEVEL at maximum( ), TRIM at minimum, others knobs in center. œ ˝ ß ł ø ł ł ł (it will less than 90dBr below 1KHz Band Pass): ł ø œ DSP TEST ł...
  • Page 42 6 7 *...
  • Page 44 > % '3 $LA; 8 2 ;G < 8 ; 3 ;N 6 < 8 ; A KA N 6 $ G;; ;M $L N 6 ;0 < ; B B < G; B B ; G2 ýA0AK9; KL0A ) ' $K;;0AK;;...
  • Page 45 > % '3 8 2 ;G " " % " 2KAK 0A < < 8 2;2; 2 ;KG ;M$L < N 6 ;0 < ; B B < G; B B ýA0AK9; KL0A 8 ; G2 $K;;0AK;; # % . % ( % ) ' $K;;0AK;;...
  • Page 46 $LA; " ? N 6 ;0; $L$G " $L$L " ;0 K$2M0AK$ K$ N 6 ;02 " 2K;20 K 0A < N 6 ;0; P " * ) %* ;K ;2AK; 0$A'. 8 2 ;G % % ) %* 8 2 ;L ) %* ;0 K$$ K$ K$2 P "...
  • Page 47 < ) * " " % 0 $K; 0 2AK; ; ! 8 < % % . < % % . ;M$L N 6 ;0 $$ K22K G ? N 6 ;0 8 2 M " " % # % ? N 6 ;0 <...
  • Page 48 $L è C AE ! , & / * % % ; ; 9 2$2+ 2$$ è C AE ! , & / * % % ; ; 9 ;LG+ ;LL A; è C AE ! , & / * % % ;...
  • Page 49 8 2M $ ! ? < 8 2M G ! ? < 3 ;+3 +3 2+3 $+3 A+3 G+3 L+3 ; +3 ;;+3 ; +3 ;2+3 ;$+3 ; * % # 4 $A A+3 ;G+3 ;L+3 $+3 A+3 G+3 L+3 +3 M+3 2 +3 2;+3 2 3 22 3 2$ 3 2A 3 3 M 0LB è...
  • Page 50 < B $2G ) %* è & / * % % ; $9 " 0 # A 6 ÿ$KA " A6 ýAK;; M+ ; + ;$+ ;A+ ;G+ & " 0 ;A# ; 6 AE AL+ A + AM+ G + G;+ G + G2+ G$ GA+ GG+ GL+ G + GM+ L + L;+ L + L2+ L$+ L &...
  • Page 51 * % # L ;A 6 * % # LM;A 6 * % # 8 ;A ; # ) # 3 A+3 G < " # ! 9;+! 9 +! 92+! 9$ ! M G ! < " # ! 9A ! ;2$ B 4 2G ! ý20A <...
  • Page 52 A0;B è C AE ! , & / * % % ; ; 9 G0 B è C AE ! , & / * % % ; ; 9 ;G + ;G; + 2+ $+ A+ G+ L+ + M+ ; + ;;+ ; + ;2+ ;$+ ;A+ ! , &...
  • Page 53 ; A+ ; G+ ; L+ ; + ; M+ ;; + ;;;+ ;; + ;;2+ ;;$+ ;;A+ ;;G+ ;;L+ ;; + ;;M+ ; + ; ;+ ; + ; 2+ ; $+ % ; ; 9 A0;;B è C ;E ! , "...
  • Page 54 " ? N 6 ;0; " $L$M " ;0 K$2M0AK$ K$ N 6 ;0; " 2K;20 K 0A < N 6 ;0; P " * ) %* ;K ;2AK; 0$A'. 8 2 ;G % % ) %* 8 2 ;L ) %* ;0 K$$ K$ K$2 P "...
  • Page 55 < " " % 0 $ K; ;2;MM N 6 ;0 < ) * " " % 0 $K; 0 2AK; ;M$L N 6 ;0 $$ K22K G ; ! 8 < % % . < % % . % ) ' 3 ; ;A <...
  • Page 56 & " 0 22# ; 6 AE ;2+ ;$+ ;L+ ; + ;M+ & " 0 $L# ; 6 AE 0 # A 6 ÿ$KA " 2 + 22 $0L# A6 ý$KL " 2$ + 2$2+ 2$$ 2$+ 2A+ 2G+ 2L+ $;+ $ + $2+ $$+ $A+ $G+ $L+ $ + $M+ A + A;+ AG+ AL+ G2+ G$+ GA+ GG+ GL+ G + GM+ L + L;+ L + L2+ L$+ LA+ A6 ýAK;;...
  • Page 57 B è C AE ! , & / * % % ; ; 9 G + G2+ G$+ GA+ GL+ G + è C AE ! , & / * % % ; ; 9 GM+ L + L2+ L$+ LA+ ;...
  • Page 58 " % G 2 ? C AE 2 M+ 22 + 22;+ 22 " % G 2 22 ? C AE 2$ + 2$M " % G 2 0 ;A# L C ; E 2$A+ 2$G+ 2$L " % G 2 0;# A 6 J A6 5 222+ 22$+ 22G+ 22L+ 22 + 22M+ 2$ + 2$;...
  • Page 59 < < < 2; 2 ;G ;G 3 ; L < " # ! M G ! ! 9;+! 9$+! 9L+! 9; +! 92 +! 92A+! 92 +! 9$; ! 9 +! 92+! 9A+! 9G+! 9 +! 9M+! 9;;+! 9; +! 92 <...
  • Page 60 8 2M G ! ? < 3 ;+3 +3 2+3 $+3 A+3 G+3 L+3 +3 M+3 ; +3 ;;+3 ; * % # 4 $A +3 ;2+3 ;$+3 ;A+3 ;G 8 AB è , M ;;2 " 6 G;+6 G +6 G2+6 G$+6 GA+6 GG+6 GL+6 G AB 8 ! ! ;...
  • Page 61 < B $2L ) %* 3 ; ! , < 8 ; 3 ;N 6 0 è C AE ! , & / * % % ; ; 9 $L è C AE ! , & / * % % ; ; 9 $2+ $$+ $A+ $G+ $L+ $ + $M+ A + A;+ A + A è...
  • Page 62 < 8 ; M 3 N 6 + 2+ $+ A+ G+ L+ + M+ ; + ;;+ ; $0L è C AE ! , & / * % % ; ; 9 + ;2+ ;$+ ;A+ ;G L è C AE ! , &...
  • Page 63 èK$ C AE ! , % %; ;G9 ! , % & % * * ! $;$ * % # L$< ;$, * % # AGB ;G ? G 4 * % # ? , T; A * % # <...

This manual is also suitable for:

Amx-220fx