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Il service manual molto accurato. Rapidi nella risposta
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Quick site processing. A complete and very useful manual with all details. Thank you!
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Quick service response. A useful and very rare service manual with all details. I recomend this service.
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I ordered this manual sometime in the afternoon and I received it on my e-mail the same evening.
This is a fantastically good and properly scanned copy of the original manual. All pages are of the same scale and they overlap each other. It means that you can print the manual and easily make it as a convenient paper manual.
The content of the manual is fantastic. Alignment descriptions, PCB layouts and elementary diagrams are explicit and precise. I immediately found what I was looking for. Thanks to this manual and Owner-Manuals.com my amplifier is alive again. Many thanx indded!
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The manual was well-scanned and easy to read. As an added bonus, the Operator's Manual was bundled with the Service Manual!
I'd definitely use owner-manuals.com again.
SECTION 3 DIAGRAMS
3-1. BLOCK DIAGRAM
CNJ101 (4/4) OUTPUT (THROUGH) L INPUT (MONO) CNJ101 (3/4) CNJ301(4P) L HIGH LEVEL INPUT R PRE AMP IC101(1/2) INPUT CNJ101 (2/4) OUTPUT (THROUGH) SW501 TEST TONE OP AMP 3 2 +B OP AMP 5 6 R 7 VR101 FILTER VR101(1/4),VR101(2/4) 5 LPF IC201(1/2) LPF 7 OFF SW501 FILTER 5 FILTER IC301(1/2) 7 VR102 LEVEL VR102(1/2) SWITCH Q301 DIFFERENTIAL AMP Q303 DRIVE AMP Q304 BIAS Q306,307 DIFFERENTIAL AMP Q302 6 5 DRIVE AMP Q305 DRIVE AMP Q309 POWER AMP Q311 OVER LOAD DET Q312 DRIVE AMP Q308 POWER AMP Q310 L+R MONO 3 2 1 PRE AMP IC101(2/2) VR101 FILTER VR101(3/4),VR101(4/4) 3 LPF IC201(2/2) LPF 1 OFF BIAS Q406,407 DIFFERENTIAL AMP Q402 DRIVE AMP Q405 DRIVE AMP Q409 POWER AMP Q411 OVER LOAD DET Q412 L SW501 FILTER 3 FILTER IC301(2/2) 1 VR102 LEVEL VR102(2/2) DIFFERENTIAL AMP Q403 CN201 SPEAKER OUT SWITCH Q401 DRIVE AMP Q404 DRIVE AMP Q408 POWER AMP Q410
XM-255EX/255NX
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) For schematic diagrams.
Note: � All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. � All resistors are in � and 1/4 W or less unless otherwise specified. � C : panel designation. � U : B+ Line. � Power voltage is dc 14.4V and fed with regulated dc power supply from ACC and BATT cords. � Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : POWER ON * : Impossible to measure � Voltage are taken with a VOM (Input impedance 10 M�). Voltage variations may be noted due to normal production tolerances. � Signal path. F : AUDIO
R
CNJ101 (1/4)
1
7
IC401 (1/2)
IC401 (2/2) LINE CONTROL Q941,942 PH901 DC DET
TH901
B+
For printed wiring boards.
PROTECT LATCH Q904,905 (CURRENT CHECK)
Note: � X : parts extracted from the component side.
PROTECT LATCH Q906,907 (CURRENT CHECK) D904 DRIVER Q946,949 CN101 +12V F901 (20A) B+ SWITCH Q901,902
OFFSET DET Q953-954
T901 DC-DC CONVERTER TRANSFORMER RECT D908,909 +REG Q944 B+ B+
ON/OFF DRIVE Q948
B� ON/OFF DRIVE Q947 -REG Q933 B�
REMOTE
LED DRIVE SWITCH Q909,910
LED DRIVE SWITCH Q911,913
LED DRIVE SWITCH Q914,915
TH902
POWER ON/OFF Q903
Q908 16 3 1 14 10 ON/OFF CONTROL 9
DC-DC CONVERTER CONTROL IC901
D905
D906
D907
OSC
VCC 12 B+
D905 OVER CURRENT
D906 OFFSET
D907 THERMAL
09
POWER/PROTECTOR � Signal path F : AUDIO
7
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