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Quality scan, great manual. I solved my problem with this manual.
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The AKAI 1720 model reel to reel tape recorder described in this Manual is quite an old unit - circa late 1960's. As a consequence, the description of the mechanical details - and adjustments thereof - is quite critical. The manual does this quite well. The schematics are also well presented and have detailed PCB overlays. Probably the only negative is that some half-tone detail has been lost from the original manual as it has been scanned in simple B&W.
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Perfect source for service manuals: fast and professional transaction; high quality, perfect readable and largely scaleable PDF; complete schemes, diagrams and spare part list. Tnx a lot, cu again!!!!
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I got your link from a friend and I must say that I am really satisfied with your service. Specially this B&O manual I didn't find anywhere on the web... but you could deliver it :-) . You deliver very fast and the copy is of good quality. So your webpage is bookmarked. Thanks
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This was the Sony CCU-500A Service manual I was looking for.
The price was reasonable.
The permission to download was quck.
I will use Owner-Manual.com for all my manual needs.
PIN NOMBER (PSDIP52-PIN) 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 38 39 40 41 42 43 44 45 46 47 48
PIN NAME TP AUD-CL-OUT D_CTR_I/O_1 D_CTR_I/O_0 ADR_SEL STANDBYQ I2C_CL I2C_DA 12S_CL 12S_WS 12S_DA_OUT 12S_DA_IN1 ADR_DA ADR_WS ADR_CL DVSUP DVSS I2S_DA_IN2 NC RESETQ DACA_R DACA_L VREF2 DACM_R DACM_L DACM-SUB SC2_OUT_R SC2_OUT_L VREF1 SC1_OUT_R SC1_OUT_L CAPL_A AHVSUP CAPL_M AHVSS AGNDC SC3_IN_L SC3_IN_R SC2_IN_L SC2_IN_R SC1_IN_L SC1_IN_R VREFTOP MONO_IN AVSS AVSUP ANA_IN1+ ANA_IN-
TYPE
OUT IN/OUT IN/OUT IN IN IN/OUT IN/OUT IN/OUT IN/OUT OUT IN OUT OUT OUT
CONNECTION (IF NOT USED) LV LV LV LV X X X X LV LV LV LV LV LV LV X X LV LV X LV LV X LV LV LV LV LV X LV LV X X X X X LV LV LV LV LV LV X
SHORT DESCRIPTION TEST PIN AUDIO CLOCK OUTPUT (18.432MHz) D_CTR_I/O_1 D_CTR_I/O_0 I2C Bus address select Stand-by (low-active) I2C clock I2C DATA I2C clock I2S word strobe I2S data output I2S1 data input ADR data output ADR word strobe ADR clock Digital power supply 5V Digital ground I2S2-data input Not connected Power-on-reset Headphone out, right Headphone out, left Reference ground 2 Loudspeaker out, right Loudspeaker out, left Subwoofer output SCART output2, right SCART output2, left Reference ground 1 SCART output1, right SCART output1, left Volume capacitor AUX Analog power supply 8V Volume capacitor MAIN Analog ground Analog reference voltage SCART 3 input, left SCART 3 input, right SCART 2 input, left SCART 2 input, right SCART 1 input, left SCART 1 input, right Refrence voltage IF A/D converter Mono input Analog ground Analog power supply 5V IF input 1 IF common(can be left vacant, only if IF input 1 is also not in use) IF input 2(can be left vacant, only it IF input 1 is also not in use) TEST PIN Crystal oscillator Crystal oscillator
IN IN OUT OUT OUT OUT OUT OUT OUT OUT OUT
IN IN IN IN IN IN
IN
IN IN
LV X X LV AVSS via 56pF/LV AVSS via 56pF/LV X X X
49 50 51 52
ANA_IN_2+ TESTEN XTAL_IN XTAL_OUTA
IN IN IN OUT
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