WASP SERVICE MANUAL ocr

SMT EE I BENX EN” WASP SYNTHESISER ELECTRONIC DREAM PLANT LTD TEST INSTRUCTIONS - WASP Visual Inspection. 1. Check p.c.b. for soldering faults, particularly: top soldering on all i.c.s soldering on pots (partic middle pin of GLIDE pot) GLIDE pot wiring reversed top soldering on regulator middle pin 2. Check i.c.s for reversal. 3. Check electrolytics for reversal (partic in GLIDE circuit). Initial Settings 4. Set controls as follows. "Off” means fully anti 'on' means fully clockwise. BEND central GLIDE off OCT 1 (5) central OCT 2 (5) central PW central PITCH 3/4 on SELECT (3) central SELECT (3) central LFO FREQ on NOISE off PITCH MOD off LFO SEL (6) off FILT FREQ on LFO FILT CONT central Q off KNV FILT CONT central ATTACK off ATTACK 2 off DECAY off DECAY 2 off SUSLEV on DELAY just above cl FILT SEL (3) off and all presets central, except for KBD SENS which should be fully on. Check for co

Sheet 1 of 1 1 TEST INSTRUCTIONS - WASP Visual Inspection. 1. Check p.c.b. for soldering faults, particularly: top soldering on all i.c.s soldering on pots (partic middle pin of GLIDE pot) GLIDE pot wiring reversed top soldering on regulator middle pin 2. Check i.c.s for reversal. 3. Check electrolytics for reversal (partic in GLIDE circuit). Initial Settings 4. Set controls as follows. "Off” means fully anti 'on' means fully clockwise. BEND central GLIDE off OCT 1 (5) central OCT 2 (5) central PW central PITCH 3/4 on SELECT (3) central SELECT (3) central LFO FREQ on NOISE off PITCH MOD off LFO SEL (6) off FILT FREQ on LFO FILT CONT central Q off KNV FILT CONT central ATTACK off ATTACK 2 off DECAY off DECAY 2 off SUSLEV on DELAY just above cl VOLUME on FILT SEL (3) off and all presets central, except for KBD SENS which should be fully on. Check for correct number of ways in each switch (in brackets). Power Consumption. 5. Apply power (+9 volts, current limited to 500 mA). Check current consumption; this should lie in the range of 42 to 52 mA. If it is about 100 mA check for a reversed regulator. If 200,mA or more check for regulator output shorted to earth (e.g. bridged decoupling…