JVC GY-HM790U Service Manual page 16

Adj
Adjustment item
No.
235 RESET START[B]R
236 RESET STOP[B]R
237 SHP PHASE[B]R
238 SHD PHASE[B]R
239 AD OUT PHASE[B]R
240 LVDS CLK[B]R
427 AFE CLAMP[B]R
351
AFE TEST MODE
241 H1 START[R]
242 H1 STOP[R]
243 H2 START[R]
244 H2 STOP[R]
245 H1L START[R]L
246 H1L STOP[R]L
247 RESET START[R]L
248 RESET STOP[R]L
(*1)Do not push the set button because the data of SSE adjustment are reset. In this case, the replacement of the OP block
is needed.
4.3.2 Switches and Functions Used in Adjustments
Most of the adjustment items employ microcomputer-controlled adjustments using electric potentiometers. The adjustment data is
stored in EEPROM.
The switches used in the adjustments and their functions are as follows.
[MENU] Button
[USER 1], [USER 2] Button
[Cross-Shaped] (UP/DOWN) Button : Press UP/DOWN to adjust the selected item.
[Set] Button
4.3.3 Procedure
(1) Turn the power ON, while holding the [USER 1] and [USER 2] buttons.
(2) When the power is ON, press the [MENU] button to display the ADJUST MENU.
(3) Push the [Set] button so that " * " lighting, and the [Cross-Shaped] (UP/DOWN) button to the specified value while observing the
designated TP and measuring instrument.
Note:
Do not turn the power off while "*" is blinking. Because all adjustment data may be broken.
(4) After completing the adjustment, push the [Set] button to delete the "*" and store the adjustment value in memory.
(5) Press the [USER 1] and [USER 2] button to select the next item to adjust.
(6) Adjust for each item to do same procedure as above (3)(4).
(7) After completing all adjustments, turn the power OFF and ON again.
(8) To return to normal operation mode, turn the power OFF and ON again.(If did not re-start camera power, camera will be still in
ADJUST MODE, so if press the [MENU] button then ADJUST MENU indicate on the screen and will not indicate normal menu
screen.)
--- ADJUST [60] ---
26. IN GAIN [B]
VR DATA
CTL OUT
SET DATA
L-R
REF.L XXX
REF.R XXX
4.3.4 Adjustment mode
* When the adjustment item is selected, the input signal, internal mode and output signal flow are automatically set as specified.
1-16 (No.HC034<Rev.001>)
Adjustment
Mode
range
0 to 63 60, 50, 48, 40
0 to 63 60, 50, 48, 40
0 to 63 60, 50, 48, 40
0 to 63 60, 50, 48, 40
0 to 31 60, 50, 48, 40
0 to 15 60, 50, 48, 40
-128 to 127 60, 50, 48, 40
128 60, 50, 48, 40
0 to 63 60, 50, 48, 40
0 to 63 60, 50, 48, 40
0 to 63 60, 50, 48, 40
0 to 63 60, 50, 48, 40
0 to 63 60, 50, 48, 40
0 to 63 60, 50, 48, 40
0 to 63 60, 50, 48, 40
0 to 63 60, 50, 48, 40
: Press to start from the adjustment menu.
: Press to select the adjustment item.
: Press to start an adjustment and store the adjustment value in memory.
USER 1, USER 2 Button
MENU Button
Set Button
POWER Switch
Usually not displayed. Starts lighting when the [Set] button is pushed.
:- 12 Potentiometer value
: 77 D/A output value
:- 12 Adjustment value currently set
R G B
X X X
XXX XXX
Displayed as the adjustment menu items.
XXX XXX
Display Adj
Adjustment item
order No.
112 249 SHP PHASE[R]L
113 250 SHD PHASE[R]L
114 251 AD OUT PHASE[R]L
115 252 LVDS CLK[R]L
116 428 AFE CLAMP[R]L
117 253 H1L START[R]R
118 254 H1L STOP[R]R
255
119 RESET START[R]R
120 256 RESET STOP[R]R
121 257 SHP PHASE[R]R
122 258 SHD PHASE[R]R
123 259 AD OUT PHASE[R]R
124 260 LVDS CLK[R]R
125 429 AFE CLAMP[R]R
126 351 AFE TEST
127 201 EEP COPY SYS TO CAM
Cross-Shaped
(UP/DOWN) Button
The value changes when the potentiometer value is stored in memory.
Adjustment
Display
Mode
range
order
0 to 63 60, 50, 48, 40 128
0 to 63 60, 50, 48, 40 129
0 to 31 60, 50, 48, 40 130
0 to 15 60, 50, 48, 40 131
-128 to 127 60, 50, 48, 40 132
0 to 63 60, 50, 48, 40 133
0 to 63 60, 50, 48, 40 134
0 to 63 60, 50, 48, 40 135
0 to 63 60, 50, 48, 40 136
0 to 63 60, 50, 48, 40 137
0 to 63 60, 50, 48, 40 138
0 to 31 60, 50, 48, 40 139
0 to 15 60, 50, 48, 40 140
-128 to 127 60, 50, 48, 40 141
- 60, 50, 48, 40 142
- 60, 50, 48, 40 143