Laney_TT50H_Service_Manual电路图.pdf

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1、? ? ? ? ? ? ? ? ? Laney Classic British Amplification TT50H Service Information RadioFans.CN 收音机爱 好者资料库 ? ? ? ? ? ? ? ? ? Laney Classic British Amplification TT50H Service Information Contents 1.Contents 2.TT50H Schematic drawing 3.TT50H Mains wiring 4.Tone Control Pcb - 9355 issue 3 5.Tone Control

2、Pcb - 9355 issue 4 6.Main Preamp Pcb - 9356 issue 3 7.Main preamp Pcb - 9356 issue 4 8.Tube Pcb - 9357 issue 3 9.Tube Pcb - 9357 issue 4 10. TT midi Pcb - 9358 issue 4 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 220pF 1KV Screened lead to PCB 9357 Break track 4 - C5 from 100pF to 220pF 1KV - C33

3、 from 100pF to 220pF 1KV - T rack break on pin1 of HD3 - Screened lead wired from Wiper VR7 to PCB 9357. (See CN0335 20/01/04) Break Track Screened lead to pcb 9356 CX01 220n 100V CX01 220n 100V CX02 220pF 1KV CX02 220pF 1KV 4 - CX01, CX02 Added - Track broken by pin1 HD3 - Screened lead added from

4、pcb 9356 to C11. (See CN0335 20/01/04) 12345678 A B C D 87654321 D C B A Title NumberRevisionSize A3 Date:25-Apr-2002Sheet of File:E:PCBProtel PCBS9358_4.ddbDrawn By: TT50 Midi board 93584 119358_4.Sch Rich Thompson BLT Industries 1 8 915 SK3 DB15M RA0/AN0 2 RA1/AN1 3 RA2/AN2 4 RA3/AN3/VREF 5 RA4/T0

5、CKI 6 RA5/AN4/SS 7 RB0/INT 21 RB1 22 RB2 23 RB3 24 RB4 25 RB5 26 RB6 27 RB7 28 RC0/T1OSO/T1CKI 11 RC1/T1OSI 12 RC2/CCP1 13 RC3/SCK/SCL 14 RC4/SDI/SDA 15 RC5/SDO 16 RC6 17 RC7 18 MCLR/VPP 1 OSC1/CLKIN 9 OSC2/CLKOUT 10 VSS 8 VSS 19 VDD 20 U1 PIC16C73 XT1 4MHZ CRY C1 22P 50V C2 22P 50V 6WDIPSW R22R23R2

6、4R21 33KSM R25 100KSM R26 100KSM 12 U4A CD4069UBE 34 U4B CD4069UBE 98 U4D CD4069UBE 1110 U4E CD4069UBE U5 PC900V D1 BAS16 R32 220RSM R33 220RSM R34 220RSM GND INOUT U6 7805 R43 330R 5W D7 1N4007 C5100N 63V C8 100U 25V D2 BAS16 D3 BAS16 D4 BAS16 R27 100KSM R28 100KSM R29 100KSM R42 47KSM R40 1KSM C6

7、10U 50V TS9 SO642 LED1 LED3MMY 1 2 3 4 5 6 7 8 9 10 HD1 HD10W.5 TS1 BC517 TS2 BC517 TS3 BC517 TS4 BC517 TS5 BC517 R7 10KSM R6 10KSM R8 10KSM R9 10KSM R10 10KSM R39 1KSM R35 1KSM R36 1KSM R37 1KSM R38 1KSM +5V G C4 100N 63V G G +5V +5V D6 1N4007 +12V C7 100U 25V GGGG +5V +5V G +5V R30 220RSM R31 220R

8、SM G G +5V G G G G G G +5V G +5V R1 10KSM G +5V G G G G G SW2A G +5V+5V G +5V G R19 47KSM R20 47KSM +5V +5V R41 330RSM +5V Store Button To PCB Preamp Midi In Midi out Midi Through 4 5 6 U2B 74HCT08 9 10 8 U2C 74HCT08 12 13 11 U2D 74HCT08 +12V R16 10KSM R18 10KSM R14 10KSM R12 10KSM TS7 BC847B TS6 BC

9、847B G G +5V +5V +5V To LEDs To Switches Midi Information/Store Confirmation R2 10KSM R3 10KSM R4 10KSM R5 10KSM +5V+5V+5V+5V R1110KSMR13R15R17 +5V+5V+5V+5V I2C Memory From Preamp To Relays CHA_OP CHB_OP CHC_OP VOL_OP REV_OP Switches CHA_SW CHB_SW CHC_SW VOL_SW REV_SW 4 off 1 2 3 45 S 67 SK2 1 2 3 4

10、5 S 67 SK1 1 8 915 Boxed Parts not on pcb Part of Footswitch assembly Rev Vol 1/2 CHC CHB CHA TS8 CHA_FS CHB_FS CHC_FS VOL_FS 4 OFF G P2 To Preamp Main Ground R50 10KSM +5V +5V GND 6 3 4 5 A0 A1 A2 VSS VCC NC SCL SDA U3 24C02C G +5V 1 2 3 147 U2A 74HCT08 12 HD2 HD2W G I2C Erase 1 2 3 45 S 67 SK4 DIN7 R44 10KSM +5V G FP Flame proof resister Must only be replaced with same type and rating Indicates safety critical component Must only be replaced with approved type FP