A80 MR 48 1980 Remote Module for 089/189
A80 QC 48 1980 Remote Module for 089/189
A80 R 48 1980 Remote Module for 089/189
A80 RC 48 1980 Remote Module for 089/189
A80 VU 48 1980 Remote Module for 089/189
B62 48 1980 Remote Module for 089/189
B67 48 1980 Remote Module for 089/189
169 50 1980 Various improvements
269 50 1980 Various improvements
A800 51 1980 Narrow head block
A62 52 1980 A80RC address start IF
B62 52 1980 A80RC address start IF
089 53 1980 Speaker protection
A800 55 1980 SW update
A80 RC 56 1980 FM Pilot Tone
169 57 1980 Various improvements
269 57 1980 Various improvements
B67 58 1981 Various improvements
A80 VU 59 1981 Increased bias
1/8
Service Information Survey
Service Information Bulletins (PDF, on FTP Server), in Chronological Order, as of 22.04.2008
Concerned SI No. Year Subject
A80 VU 61 1981 Lapping of multi-track heads
A800 61 1981 Lapping of multi-track heads
A820 MCH 61 1981 Lapping of multi-track heads
A827 61 1981 Lapping of multi-track heads
A80 R 62 1981 Various improvements
A80 RC 62 1981 Various improvements
A80 VU 63 1981 Various improvements
A80 MR 64 1981 Various improvements
A80 QC 64 1981 Various improvements
A80 R 64 1981 Various improvements
A80 RC 64 1981 Various improvements
A80 VU 64 1981 Various improvements
A800 65 1981 TLS2000 / A800
TLS2000 65 1981 TLS2000 / A800
A800 66 1981 TD/audio adjustments
A80 VU 67 1982 Narrow head block
A80 VU-Pre 68 1982 MkII update
A800 70 1982 Extended remote facilities
A800 71 1982 Transformerless I/O
A800 72 1983 Spooling motor power unit update
B67 73 1983 MkII sync versions service instructions
A810 77 1983 Various improvements
A800 78 1983 Audio update
1988 117, 117a Update for use with parallel controller
1988 119 SW update for parallel controller
1989 123 CD drive replacement
1989 135 HW/SW update
1989 127 HW/SW update
1991 150 New servo electronics
1976 16 Electronic tape counter
1980 48 Remote Module for 089/189
1981 64 Various improvements
1984 83, 83a Various improvements
1987 105 Tape tension sensor
1978 31 Measuring Procedure for VU Meter Panels
1980 48 Remote Module for 089/189
1981 64 Various improvements
1987 105 Tape tension sensor
5/8
1976 16 Electronic tape counter
1977 22 Zero locator
1978 31 Measuring Procedure for VU Meter Panels
A80 R
A80 RC
A80 VU
A80 VU-Pre 1982 68 MkII update
A800
A807
A81
1978 33 Zero locator
1980 48 Remote Module for 089/189
1981 62 Various improvements
1981 64 Various improvements
1987 105 Tape tension sensor
1977 27 Zero locator
1978 31 Measuring Procedure for VU Meter Panels
1978 33 Zero locator
1980 48
1980 56
Remote Module for 089/189
FM Pilot Tone
1981 62 Various improvements
1981 64 Various improvements
1987 105 Tape tension sensor
1976 12b Speed conversion
1976 16 Electronic tape counter
1976 13 Electronic tape counter
1977 22 Zero locator
1978 33 Zero locator
1979 44 Switching code 1.080.811
1980 48 Remote Module for 089/189
1981 59 Increased bias
1981 61 Lapping of multi-track heads
1981 63 Various improvements
1981 64 Various improvements
1982 67 Narrow head block
1983 79 2" pinch roller
1984 xx Switching Code PCB Replacement
1984 88 2" slideable dashpots
1986 94 MkIV update
1987 104 Fan
1987 105 Tape tension sensor
1991 143 Servo board 1.630.051.86
1991 151 Tape path improvement
1979 43 Various improvements
1979 45 Move sensor replacement
1980 51 Narrow head block
1980 55 SW update
1981 61 Lapping of multi-track heads
1981 65 TLS2000 / A800
1981 66 TD/audio adjustments
1982 70 Extended remote facilities
1982 71 Transformerless I/O
1983 72 Spooling motor power unit update
1983 78 Audio update
1983 79 2" pinch roller
1983 81 SW update
1986 96 Spooling motor power unit, slew rate limiter
1986 101 Tape tension sensor w. hall effect potentiometer
1991 151 Tape path improvement
1991 152 Spooling motor power amp update
1987 112 Start improvement
1987 114 SW update
1977 27 Zero locator
1978 33 Zero locator
Service Information Survey
6/8
1983 77 Various improvements
1984 84 TC read performance
1985 91 Various improvements
1986 95 SW update