Test And Adjustment - Hammond Leslie 3300 P Service Manual

STEP STEP SUBJECT SUBJECT
1. a DC Power Supply Check
+15V
b b
-15V 15V
c
+37V MAIN VOLUME 0:
d
+24V
e LESLIE 11PIN DC OUT Check
f
Remote Power ON Check Power SW OFF
2.
Resetting Rotation Speed to Factory Settings
Switch ON the power, pressing the Foot SW, and wait for 5 sec. Check the STOP LED (RED) slowly flashes and the HORN and the DRUM ROTOR turns at SLOW.
a SLOW SPEED Adjustment: Adjust SLOW by the TRIMMER on the panel. a SLOW SPEED Adjustment: Adjust SLOW by the TRIMMER on the panel
Press on the Foot SW and switch the Motor to FAST, and wait until the Brake LED (RED) turns on.
b FAST SPEED Adjustment: Adjust FAST by the TRIMMER on the panel. b FAST SPEED Adjustment: Adjust FAST by the TRIMMER on the panel
c c After checking switch OFF the power and switch it ON again for normal operation Turn the DRUM side so the SLOW (ORG) LED turns on
After checking, switch OFF the power and switch it ON again for normal operation.Turn the DRUM side, so the SLOW (ORG) LED turns on.
3.
Check the RISE TIME and the FALL TIME of the HORN and the DRUM. (See the figure on the right)
3 1 HORN RISE TIME (SLOW > FAST) approx 2 5 ±0 5 sec at 10 o'clock position 3-1 HORN RISE TIME (SLOW -> FAST) approx. 2.5 ±0.5 sec. at 10 o'clock position
3-2 HORN FALL TIME (FAST -> SLOW) approx. 2.5 ± 0.5 sec. at 9 o'clock position
3-3 DRUM RISE TIME (SLOW -> FAST) approx. 8 ± 1.5 sec. at 11 o'clock position
3 4 DRUM FALL TIME (FAST > SLOW) approx 8 ± 1 5 sec at the center 3-4 DRUM FALL TIME (FAST -> SLOW) approx. 8 ± 1.5 sec. at the center
If not at these tolerances, adjust by the TRIMMER.
If the TRIMMER must be turned more than 30 degrees from the standard position A malfunction is present.
4
CHECK Power AMP .
a TUBE ON/OFF CHECK a TUBE ON/OFF CHECK
b WOOFER SP
LINE IN
c HORN SP
LINE IN
c SUB WOOFER OUT
SUB WOOFER OUT LINE IN LINE IN
d TONE VR Check
LINE IN
e
LINE IN
f f
LINE IN LINE IN
5.
CHECK the Noise
a Woofer SP- Noise Level
b Woofer SP+ Noise Level
c HORN SP Noise Level
SETTING SETTING
MAIN VOLUME: Grade 2 MAIN VOLUME G d 2
800Hz 80mV
8kHz
80Hz 80H
80Hz
2kHz
8kHz 8kH
MAIN VOLUME: MAX
ADJUSTM
INPUT INPUT TEST POINT TEST POINT
ENT
POINT
PWH-74C J110-6
J110-1 J110 1
J111-4
J112-3,4
LES11P -PIN11,(GND)
Short PIN6 -PIN 4
Turn the HORN side so the FAST (GRN) LED turns on As the rotation approaches the standard it flashes Turn the HORN side, so the FAST (GRN) LED turns on. As the rotation approaches the standard, it flashes.
Turn the DRUM side, so the SLOW (ORG) LED turns on. (40±3rpm*)
Turn the HORN side, so the FAST (GRN) LED turns on. As the rotation approaches the standard, it flashes. Turn the HORN side so the FAST (GRN) LED turns on As the rotation approaches the standard it flashes
Turn the DRUM side, so the SLOW (ORG) LED turns on. (400±10rpm*)
Set TUBE MODE, BASS, MID, TREBLE, HORN LEVEL at the center.
TUBE DRIVE LEVEL is TUBE OFF; SUB WOOFER VOL is MAX
Adj t th VR9 f th PAH74B Adjust the VR9 of the PAH74B so as to not change the output at the TUBE ON/OFF
LINE IN PWH-74C J104-2,4
PWH-74C J102-1
SUBWOOFER OUT JACK SUBWOOFER OUT JACK
BASS VR MAX-MIN
MID VR MAX-MIN
TREBLE VR MAX MIN TREBLE VR MAX-MIN
PWH-74C J104-2
PWH-74C J104-4
PWH-74C J102-1
#3300P
SPECIFICATION SPECIFICATION NOTE NOTE
DC +15V ±5%
DC -15V DC 15V ±5% ±5%
DC +40V ±4V
DC +24V ±1V
DC +15V ±5%
Power ON
HORN HORN HORN HORN HORN HORN HORN HORN HORN HORN HORN HORN HORN HORN HORN
RISE RISE RISE RISE RISE RISE RISE RISE RISE RISE RISE RISE RISE RISE RISE
FALL FALL FALL FALL FALL FALL FALL FALL FALL FALL FALL FALL FALL FALL FALL
TIME TIME TIME TIME TIME TIME TIME TIME TIME TIME TIME TIME TIME TIME TIME
TIME TIME TIME TIME TIME TIME TIME TIME TIME TIME TIME TIME TIME TIME TIME
DRUM DRUM DRUM DRUM DRUM DRUM DRUM DRUM DRUM DRUM DRUM DRUM DRUM DRUM DRUM
t t h th t t t th TUBE ON/OFF
600mV rms ±30mV (LINE OUT 15mVrms)
550mV rms ±6mV
130 V 130mV rms ±12mV ±12 V
+4dB,-17dB
+4.5dB,-6.5dB
±10dB 10dB
1.0mV max (IEC"A"net) ( )
1.0mV max (IEC"A"net)
1.5mV max (IEC"A"net)
#3300P, #3300WP

4.TEST AND ADJUSTMENT