Hitachi DV-PF73U Service Manual page 103

Pin IN/ Signal
No. OUT Name
C-SYNC
41 IN
42 - VDD2
43 IN AFCC
44 OUT AFCLPF
N.U.
45 -
OUTPUT-
46 OUT
SELECT
47 IN D-PFG
N.U.
48 -
C-FG
49 IN
50 - AFG
51 OUT VRO
VRI
52 IN
53 - AVss
CTLA
54 IN
AVDD
55 -
IN/
CTL (+)
56
OUT
IN/
CTL (-)
57
OUT
58 OUT CTL
HiFi/NOR-IN
59 IN
POW-
IN
60
MONITOR
ST/SAP-IN
61 IN
62 IN END-S
63 IN AFC
38
Active
Function
Level
Composite
Synchronized
PULSE
Pulse
VDD2 -
Low Path Filter
Input Signal For -
AFC
Low Path Filter
Output Signal For
-
AFC
Not Used
-
Output Select H/L
Drum PG/FG
PULSE
Input Signal
Not Used
-
Capstan Motor
Rotation Detec-
PULSE
tion
Pulse
GND -
Servo Standard
-
Voltage Output
Servo Standard
-
Voltage Input
AVSS -
CTL Amp. AC
-
GND
AVDD
-
Playback/Record
-
Control Signal (+)
Playback/Record
-
Control Signal (-)
Amp. Output
Control Signal for -
Test Point
Audio Mode Input
HiFi="L"/ Nor-
A/D
mal="H"
DVD Power Mon-
itor Signal
H/L
(P-off="L",
P-on="H")
Tuner Stereo/Sap
Detector Signal
A/D
Input
Tape End Posi-
A/D
tion Detect Signal
Automatic
Frequency Con- A/D
trol Signal
Pin IN/ Signal
No. OUT Name
64 IN V-ENV
PG-DELAY
65 IN
66 IN KEY-2
67 IN KEY-1
68 IN LD-SW
69 IN ST-S
70 OUT VCR-IND
71 OUT DVD-IND
72 OUT REC-IND
73 - N.U.
N.U.
74 -
75 OUT TIMER-IND
76 OUT CONV-SW
77 OUT VCR/TV
78 OUT C-ROTA
79 OUT H-A-SW
80 IN H-A-COMP
Notes:
Abbreviation for Active Level:
PWM -----Pulse Wide Modulation
A/D--------Analog - Digital Converter
Active
Function
Level
Video
Envelope
A/D
Comparator Sig-
nal
Video Head
Switching Pulse
A/D
Signal Adjusted
Voltage
A/D Key Data
A/D
Signal 2
A/D Key Data
A/D
Signal 1
Deck Mode Posi-
tion Detector A/D
Signal
Tape Start Posi-
tion
A/D
Detector
Signal
VCR Mode LED
H/L
Signal Output
DVD Mode LED
H/L
Signal Output
REC Mode LED
H/L
Signal Output
Not Used -
Not Used
-
"TIMER" LED
H/L
Signal Output
RF Conv. Output
Channel Switch-
ing Signal Hi-z/L
3ch="Hi-z",
4ch="L"
RF Conv. ON/
OFF Signal
H/L
(TV="L"/
VCR="H")
Color Phase
Rotary
H/L
Changeover SIg-
nal
Video Head Amp
H/L
Switching Pulse
Head Amp
Comparator H/L
Signal