Panasonic AJ-YA120AG, Service Manual

Page: 437 / 647

ELE-4
4. RF/EQ Board
< Note >
After replacing the cylinder unit, perform the
paragraphs 4-1, 4-2, 4-3 and 4-4. “RF Level
Adjustments” before performing LISTA adjustment.
4-1. RF Level Adj. (HDLP)
BOARD RF/EQ
TP
See Table Below
ADJ.
Service Menu
INPUT
----
MODE
STILL
TAPE
VFM3780KML (Color Bar)
M. EQ
Oscilloscope
SPEC.
A Max = 500mVp-p ± 50mV
<Service Menu Setting>
B00: RF ADJUST ---- B-1: HDLP PB ADJUST
1. Open the service menu and select the “HDLP PB
ADJUST”.
2. Connect the oscilloscope to Measuring Point
(MP) and Trigger Point (TG) as shown in the table
below.
3. Play back the HDLP alignment tape
(VFM3780KML) in the STILL mode.
4. Adjust each EVR so that the envelope maximum
level is in the specification.
5. To save the EVR data, select B22 DEFAULT and
press the “Set Button”, then the “SAVE” indication
appears, press the “SET Button” again.
B1: HDLP_PB ADJUSTMENT
Test Point Adj. EVR Trigger Point
TP201
(PB L13ch) B01
B02 PB MAG L1
PB MAG L3 TP1
(PB L13 HSW)
TP202
(PB R13ch) B03
B04 PB MAG R1
PB MAG R3 TP2
(PB R13 HSW)
TP203
(PB L24ch) B05
B06 PB MAG L2
PB MAG L4 TP3
(PB L24 HSW)
TP204
(PB R24ch) B07
B08 PB MAG R2
PB MAG R4 TP4
(PB R24 HSW)
TP205
(RP L12ch) B09
B10 RP MAG L1
RP MAG L2 TP5
(RP L12 HSW)
4-2. RF Level Adj. (HDSP)
BOARD RF/EQ
TP
See Table Below
ADJ.
Service Menu
INPUT
----
MODE
STILL
TAPE VFM3580KM or KL (25M Color Bar)
M. EQ
Oscilloscope
SPEC.
“A” Max = 500mVp-p ± 50mV
(TP201, TP202, TP203, TP204)
“A” Max = 750mVp-p ± 50mV (TP205)
<Service Menu Setting>
B00: RF ADJUST ---- B-2 HDSP ADJUST
1. Open the service menu and select the “HDSP PB
ADJUST”.
2. Connect the oscilloscope to Measuring Point
(MP) and Trigger Point (TG) as shown in the table
below.
3. Play back the 25M alignment tape
(VFM3580KMor KL) in the STILL mode.
4. Adjust each EVR so that the envelope maximum
level is in the specification.
5. To save the EVR data, select B22 DEFAULT and
press the “Set Button”, then the “SAVE” indication
appears, press the “SET Button” again.
<Note>
Since the adjustment value of TP205 differs from
others.
B2: HDSP_PB ADJUSTMENT
Test Point Adj. EVR Trigger Point
TP201
(PB L13ch)
B01
B02
PB MAG L1
PB MAG L3
TP1
(PB L13 HSW)
TP202
(PB R13ch)
B03
B04
PB MAG R1
PB MAG R3
TP2
(PB R13 HSW)
TP203
(PB L24ch)
B05
B06
PB MAG L2
PB MAG L4
TP3
(PB L24 HSW)
TP204
(PB R24ch)
B07
B08
PB MAG R2
PB MAG R4
TP4
(PB R24 HSW)
TP205
(TR L21ch)
B09
B10
TR MAG L2
TR MAG L1
TP7
(TR L21 HSW)
MP
TG
“A” (MAX)
Refer the measuring point (MP) and torigger point (TG)
in the above for each head.