Teac MV1421, Service Manual

Page: 11 / 130

9
4-9. ADJUSTMENT
1. X-POSITION AND P2,P3 ADJUSTMENT
1 ) A d ju s t p o in t : X -P O S IT IO N
C h e c king p o in t : o sc illo s co p e ch 1 = H /S W (P Y 0 4 # 6 )
o sc illo s co p e ch 2 = P B E N V E (P Y 0 4 #4 )
Trig g e rin g : C H 1
M e a su rin g E q u ip m e n t : o s cillo sc o p e , pa th jig
M o d e : P LAY B A C K ,AT K O F F
Te s t ta p e : D P -2 (6 K H z)
Adjustm ent Procedure
1 ) C o n n e ct th e PAT H JIG to P Y 0 4 a fte r Te s t ta p e P L AY B A C K
2 ) P re ss in g th e "AT K O F F " K E Y.
3 ) In se rt th e D P -2 TA P E . ( A uto p la y b a ck )
3 ) A d ju s t th e w a v efo rm o f P B E N V E to m a xim u m (fig u re 1 ) u s in g X -p o s itio n V R .
4 ) A d ju s t IN /O U T P U T G U ID E u n til th e e x a ct w a ve fo rm a p p e a r a s b e llo w fig u re 2 .
OSCILLOSCOPE 1
CH2
CH1
ADJUST JIG
4
6
PY04
P601
OSCILLOSCOPE 2
CH1
3
2
1
GND
CONNECTION METHODE
m a x.
(fig u re 1 ) (fig u re 2 )