JBL 6233 Installation And Service Manual Download Page 11

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• 4 . With both c h a n n e l s r u n n i n g at full r a t e d o u t p u t at

5 0 H z , s h o r t o n e o u t p u t c h a n n e l . If t h e p r o t e c t

c i r c u i t s a r e c o r r e c t l y o p e r a t i n g , t h e c h a n n e l

u n d e r test w i l l g o into t h e r m a l p r o t e c t m o d e

within 1 to 2 m i n u t e s ,

• 5 . C o n f i r m d i s t o r t i o n s p e c i f i c a t i o n s .

• 6. O f f s e t v o l t a g e a c r o s s t h e o u t p u t of e i t h e r c h a n n e l

m u s t b e 1 0 0 mV,

C A U T I O N : T h e 6 2 3 3 d o e s not h a v e a n offset

a d j u s t m e n t . If t h e m e a s u r e d offset v o l t a g e is not

within s p e c i f i c a t i o n s , f u r t h e r i n v e s t i g a t i o n into t h e

c a u s e is n e c e s s a r y .

W A R N I N G

T H I S S E C T I O N O F T H E M A N U A L

C O N T A I N S S E R V I C E I N S T R U C T I O N S

F O R U S E B Y Q U A L I F I E D S E R V I C E

P E R S O N N E L ONLY.

Summary of Contents for 6233

Page 1: ...JBL 6233 INSTALLATION AND SERVICE MANUAL...

Page 2: ...higher output levels are r e a c h e d T h e display shall indicate true clip ping level regardless of c h a n g e s in A C line voltage Amplifier construction shall be modular permitting complete re...

Page 3: ...trol Controls input sensitivity Air Filter Prevents dust particles from entering unit Rear Panel Output Terminals u u 9 iii J C U S I ice O i i 111111M u n i pci cnannel duai channel operation or 8 O...

Page 4: ...the internal temperature e x c e e d s a safe operating level T h e air filter should be visually c h e c k e d every few w e e k s and c l e a n e d if dirty More frequent inspections are required un...

Page 5: ...t Phase shift vs frequency of a typical unit taken at 1W into a 4 1 load Note that phase shift of less than 15 cannot be perceived as shown by the dotted lines representing the threshold of perception...

Page 6: ...d g e R e c t i f i e r C R 4 0 1 10 A x i a l F a n 1 1 C a p a c i t o r s C403 C 4 0 4 12 C a p a c i t o r M o u n t i n g B r a c k e t 13 V o l t a g e S e l e c t S w i t c h 14 H e a t S i n k...

Page 7: ...WARNING THIS S E C T I O N OF T H E MANUAL CONTAINS S E R V I C E INSTRUCTIONS FOR U S E BY QUALIFIED S E R V I C E P E R S O N N E L ONLY...

Page 8: ...u r e to c o n n e c t the g r o u n d lead of the adapter to safety earth g r o u n d Failure to c o m p l e t e the g r o u n d s y s t e m m a y allow the c h a s s i s of the amplifier to be elev...

Page 9: ...to 50 MHz Tektronix Model 465 Multimeter Accuracy 0 1 reading 1 digit DC Range 199 9 mV to 1199 V AC Range 199 9 mV to 1199 V Input Impedance 10 mO Fluke Model 8000A Output Load Resistors Total 500 W...

Page 10: ...do not m a t c h turn the unit off and replace A L L F O U R I N V E R T E R T R A N S I S T O R S T h e s e transistors must be ordered a s a set of four Color c o d e d identification of these trans...

Page 11: ...ortion specifications 6 Offset voltage a c r o s s the output of either c h a n n e l must be 100 mV C A U T I O N T h e 6 2 3 3 d o e s not have a n offset adjustment If the m e a s u r e d offset vo...

Page 12: ...d Output Less than 0 05 20 Hz 20 kHz Intermodulation Distortion S M P T E Standard Less than 0 05 Rise Time 4 ft load 5 ps or less 8 ft load 3 us or less Slew Rate Greater than 20 V us Damping Factor...