TRACE ELLIOT V-TYPE User manual

TRACE ELLIOT
SERVICE MANUAL
DATE : December 29, 1999
Product Code: N/A
Model Number : V-Type 300 watt Head & Combo
Issued by:
Trace Elliot Limited
Blackwater Trading Estate
The Causeway
Maldon
Essex
England
CM4 4GG

C12-PCB-VTYP-C/Hx1.
V-TYPE COMBO/HEAD PREAMP MAIN BOARD.
ISSUE 1 INSERTION LIST. ANDY EWEN 11/8/98.
DESCRIPTION PART CODE QTY WHERE USED
PCB PC00008 ISSUE 2 73-PCB-PC00008 1
ZENER DIODE 27V 72-D-BZX55C27V 1ZD1
DIODE 72-D-IN4007 10 D1-D10
RES 2.5W 4K7 72-RWW4K7-2.5W 1R35
RES 2W 100K 72-RC100K-2W 4R8 R10 R17 R20
RES 1/2W 10K 72-RC10K-.5W 2R9 R36
ZERO OHM LINK 72-RCZERO 28 AS MARKED
RES 1/4W 100K 72-RM100K 2R2 R5
RES 1/4W 100R 72-RM100R 1R40
RES 1/4W 10K 72-RM10K 1R24
RES 1/4W 10M 72-RM10M 1R14
RES 1/4W 150K 72-RM150K 1R23
RES 1/4W 1K5 72-RM1K5 3R6 R16 R18
RES 1/4W 1M 72-RM1M 7R3 R4 R7 R12 R15 R21 R22
RES 1/4W 27K 72-RM27K 1R1
RES 1/4W 330K 72-RM330K 1R13
RES 1/4W 47K 72-RM47K 8R25-R32
RES 1/4W 560K 72-RM560K 1R11
RES 1/4W 560R 72-RM560R 2R33 R34
RES 1/4W 5K6 72-RM5K6 1R37
RES 1/4W 8K2 72-RM8K2 1R19
CAP 1uF POLY BOX 72-C1-250VP 1C2
CAP 1uF ELEC RADIAL 72-C1-63VER 2C14 C15
CAP 10uF ELEC RADIAL 72-C10-35VER 2MOD ACROSS R28 & R29
+ve legs nearest IC1.
CAP 10uF ELEC RADIAL 72-C10-63VER 2C16 C17
CAP 1000uF ELEC RAD. 72-C1000-63VER 1C22
CAP 100N POLY BOX 72-C100N-250VP 5C4 C24 C25 C26 C27
CAP 100P CER DISC 72-C100P-100VCD2 2C18 C28
CAP 150P CER DISC 72-C150P-50VCD 1C8
CAP 200P Polystyrene 72-C200P-630VPA 1C3
CAP 22uF ELEC AXIAL 72-C22-450VEA 2C20 C21
CAP 22N POLY BOX 72-C22N-400VP 2C12 C13
CAP 47uF ELEC RADIAL 72-C47-63VER 2C9 C10
CAP 470uF ELEC RAD. 72-C470-63VER 1C23
CAP 470N POLY BOX 72-C470N-250VP 1C11
CAP 47N POLY BOX 72-C47N-100VP 1C1
CAP 47N POLY BOX 72-C47N-400VP 2C5 C7
CAP 4N7 POLY BOX 72-C4N7-400VP 1C6
CAP 100uF ELEC RAD. 72-CAP-100400V 1C19

TRANSISTOR BC549C 72-TBC549C 1TR1
8-WAY SOCKET 72-SOCKET-8W 1FOR IC1
IC RC4558P 72-IC-RC4558P 1IC1
POT A 1MEG 73-POT-A1M 1P1
POT A 250K 73-POT-A250K 2P2 P4
POT A 25K 73-POT-A25K 1P5
POT A25K PULL SWITCH 73-POT-A25K-PS 1P3
MINI TOGGLE SWITCH 73-SWT-M-TGL-PCB 4SW1 SW3 SW4 SW5
2-WAY HEADER 0.1” 72-HEAD-2W 4HP1-HP4 (SEE NB1)
8-WAY HEADER 0.2” 72-HEAD-8W 1PL1
VALVE BASE 9-WAY 73-VAL-SOCKET 2VT1 VT2
XLR PLUG NEUTRIK 73-XLR-PCB-M-N 1XLR1
JACK SOCKETS 72-SKT-JCKBNBG 2SK1 SK2
FLYLEAD C00-FLY-HEATER 1ACROSS HP1-HP4
SIGNAL LEAD LOOM-00275 1 From L/0(F) to PC00009
SIGNAL LEAD LOOM-00276 1 From send/return to PC00009
LEAD FOR LAMP LOOM-00277 1 From PL3 to 6.3V lamp
N.B.1 The four 2-way headers are fitted with their small face to the left. This is
with the pots facing you.

cd0086x4.sch-1 - Sat Dec 11 11:04:47 1999

Important Notice
To make the bi-polar 300 watt bass board reliable the following guidelines
must be adhered to.
When a board need to be serviced it is advisable to replace both the Output
Transistors and TIP31 and TIP32. Also it is advisable to replace TR11 which
is situated under the rear of the heatsink.
The Output device should only be T2SC4468 and T2SA1695’s
The Drivers should be of the same manufacturer as each other to ensure
stability.
And TR11 is a T2N3904 as listed on the parts list.
TR11 need to be completely covered in Heat Transfer Compound (HTC)
This is to ensure that it keeps the unit biased correctly even when the unit
gets hot. If TR11 is not covered then the fan can cool this component down
and give the board a fault reading of temperature and provide and
inappropriate bias.
When adjusting the bias on the scope, make sure that the crossover distortion
is just not visible. Too far beyond this point will over bias the unit.
Use a Shake-proof washer under the pcb earth point to ensure a permanent
connection and prevent crackling noises in the future.
Paul Mathews
Jan 2000-01-25