![background image](http://html.mh-extra.com/html/nad/c-725bee/c-725bee_service-manual_703249019.webp)
4. Connect a DC voltmeter toTP3 and TP4 ,adjust VR12/VR13 for 6mV reading on voltmeter.
3. Connect a DC voltmeter toTP1 and TP2 ,adjust VR22/VR23 for 6mV reading on voltmeter.
2. Input a high voltage signal such as 5V from CD input.
5. Adjusting VR302,make R channel output become to the lowest level by same way.
4. Observing the oscilloscope,adjust VR301,make the output of speakers become to the
Repeat procedure A,B and C for the lowest volume level, idling current alignment
Adjust the pot VR3 to make the DC voltage of the point of TP5 to the same as TP6
VR303
VR301
VR302
VR304
VR13
TP4
II. FINAL ADJUSTMENT
and ISC original level respectively.
B. IDLING CURRENT
A. LOWEST VOLUME ADJUSTMENT
C.ISC CIRCUIT ORIGINAL ADJUSTING
2. Running 5 minutes with no signal
1. Power on
3. Connect a oscilloscope to L channel binding posts.
1. Tune the volume pot to lowest state.
C725BEE MAINBOARD
TP3
TP2
TP1
VR23
VR12
VR22
VR3
TP5
TP6
ALIGNMENT PROCEDURES
lowest level.
I. INITIAL
Содержание C 725BEE
Страница 1: ...NAD SERVICE MANUAL C 725BEE STEREO RECEIVER C 725BEE STEREO RECEIVER ...
Страница 12: ...CD4094 KEYBOARD IC707 IC711 MAINBOARD IC32 ...
Страница 17: ...TC9164 MAINBOARD IC31 PIN CONNECTION BLOCK DIAGRAM ...
Страница 18: ...TNY274 POWERBOARD IC51 PIN CONNECTION BLOCK DIAGRAM ...
Страница 28: ...BOTTOMLAYER POWER FOR DAB GND CZ704 CZ705 CZ702 CZ701 CZ711 TRANS PRO DET 5V5 STANDBY 39V GND GND CB710 ...
Страница 50: ...SERVICE MANUAL NAD 2008 C 725BEE STEREO RECEIVER NAD ELECTRONICS LTD TORONTO ...