E 250P (serv.man15) - JBL Audio Service Manual (repair manual). Page 15

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E250P
Integrated Circuit Diagrams 
OPAMP, QUAD
TL074CDR
U2, 3
OPAMP, DUAL
TL072CDR SO-8,  
NJM4558M-TE3
U5, 6, 4
IR2111 HALF-BRIDGE  
DRIVER
U7
2
Base
3 Collector
1 Emitter
1
2
3
2N5401 
Q1
2
Base
3 Collector
1 Emitter
1
2
3
MPSW06RLRA,  
MPSW56RLRAMPQ,  
MPS2222ARLRA,  
2N2907A, 2N5551, 
Q2, 16, 3, 21, 19, 23, 17
MOSFET IRF640 
Q18, 22
TIP31C 
Q4
MMBT3904LTI SOT23, 
MMBT3906LTI SOT23, 
DTC114EK SMT3, 
MMBT5401 LTI, 
MMBT5551 LTI 
Q11, 14, 13, 5, 8, 9, 6, 10,  
12, 15, 7, 20, 24, 26, 25
BEVEL
1. G
2. D
3. S
1
2
3
B
C
E
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