Hitachi DV-PF2U, Service Manual

Page: 61 / 97

4-1-5
Main 2/5 Schematic Diagram
WF1
V-OUT E-E
10usec 50mV x 10
WAVEFORMS
(TP751 of Main CBA)
WF1
UPPER
WF2
LOWER
V-OUT 0.1V x 10
RF-SW 0.5V x 10
50usec
(TP751 of Main CBA)
(TP302 of Main CBA)
WF5
C-PB 10mV x 10
RF-SW 0.5V x 10
5msec
UPPER
LOWER
WF2
(TP302 of Main CBA)
(TP301 of Main CBA)
Note:
There are two types of tuner unit (TU701) : A and B.
These types are compatible, and there is no problem when
using either, but it is recommended that you replace the unit
with the same type if possible.
The following table shows the differences between types A
and B:
* 2
TYPE B TS17431
TYPE A TS17421
TU701
J306 J311
WIRE
NU NU
WIRE
NU
WIRE
NU: Not Used
J308