Electrical Adjustments - Sony MZ-RH910 Service Manual

MZ-RH910
1. PRECAUTIONS FOR ADJUSTMENT
1. Adjustment must be done in the test mode only. After adjusting,
release the test mode. A key having no particular description
in the text, indicates a set key. Also, for the LCD display, the
LCD on the remote commander is shown.
2. Use the following tools and measuring instruments.
• Digital multi meter
• Regulated dc power supply (two sets)
• Ampere meter
• Laser power meter
• CD adjustment disc TDYS-1 (Part No. : 4-963-646-01)
• MD1/HiMD1 hybrid adjustment disc MDW-74/GA2
• Hi-MD3 adjustment disc HMD1GSDJ
(Part No. : 8-892-388-38) *1
• Remote commander in accessories (with LCD)
• AC adapter in accessories
*1) Hi-MD3 adjustment disc (HMD1GSDJ) is consumable.
Therefore if it is used 400 times, exchange it for a new.
2. ADJUSTMENT SEQUENCE
Adjustment must be done with the following order.
Adjustment order:
1. Entering the test mode
Note: Enter the test mode with a key.
2. Initialize the adjustment value
3. Power supply voltage adjustment
4. Charge function check
5. Laser power check
6. Setting the adjustment values
7. Servo Overall adjustment
8. Resume clear
9. Releasing the test mode
3. ADJUSTMENT OF THE EACH ITEM
3-1. Initialize The Adjustment Value
Procedure:
1. In the test mode (Display Check mode), press the [VOL--] key
to enter the Overall adjustment mode.
2. Press the [REC/T MARK] key and display "911 ResOK?".
3. Press the key on the set or
X
commander to display "911 Reset!" and initialize the
adjustment values.
4. Press the key and back to Display Check mode.
x
3-2. Power Supply Voltage Adjustment
Adjustment must be done with the following order.
3-2-1. Setting
Procedure:
1. Apply the voltage of 1.2 V to the battery terminals, and enter
the test mode (Display Check mode).
2. Press the [VOL+] key to enter the Manual mode.
3. Press the [VOL+] key twice to display as follows.
Display of the remote commander
002 POWER
16
SECTION 5

ELECTRICAL ADJUSTMENTS

3-2-2. PwrAdj adjustments
Repeat the following procedures and adjust all contents of "table 3-
2-1. PwrAdj Specifications".
Procedure:
key on the remote
–
Note1: "**" is adjustment value (hexadecimal number).
Note2: Ground point of all measuring points is CL433.
Note3: Refer to page 17 for adjustment location.
4. Press the key once, press the [VOL+] key once, and press
>
the key once again to display as follows.
>
Display of the remote commander
210 PwrAdj
5. Repeat the next procedures (3-2-2. PwrAdj Adjustments), and
adjust all contents of "table 3-2-1. PwrAdj Specifications".
Example Display (Item No. 2211)
211 VC1
adjustment value (hexadecimal)
1. Connect the digital multi meter to measuring point (refer to
the following table) and CL433 (GND).
2. Press the key to change the item numberr to 2211.
>
3. Adjust with [VOL+]/[VOL--] keys so that the value of digital
multi meter becomes specification value.
4. Press the key on the set or
X
commander to write the adjusted value. (Shifts to the next
item automatically)
5. Repeat adjustment from step 3 until item number 2233.
ItemNo. Display Specification value Measuring point
2211 211 VC1 ** 2.05V + 0.02V
2.25V ± 0.01V
2212 212 VC1 Ni **
2213 213 VC2 ** 1.20V + 0.01V
3.10V ± 0.015V
2214 214 DDC3 L **
3.10V ± 0.015V
2215 215 DDC3 H **
3.02V ± 0.02V
2216 216 REG1 L **
3.02V ± 0.02V
2217 217 REG1 H **
2.275V ± 0.01V
2218 218 REG2 1 **
2.480V ± 0.01V
2219 219 REG2 2 **
2.740V ± 0.01V
2221 221 REG2 3 **
2.985V ± 0.01V
2222 222 REG2 4 **
2.52V ± 0.02V
2223 223 REG3 **
0.89V ± 0.02V
2224 224 VREC 1 **
1.08V ± 0.02V
2225 225 VREC 2 **
1.52V ± 0.02V
2226 226 VREC 3 **
2.27V ± 0.02V
2227 227 VREC 4 **
2.97V ± 0.02V
2228 228 VREC 5 **
0.94V ± 0.02V
2229 229 VREC 6 **
1.28V ± 0.02V
2231 231 VREC 7 **
2.57V ± 0.02V
2232 232 VREC 8 **
2.57V ± 0.02V
2233 233 VREC 9 **
Table 3-2-1. PwrAdj Specifications
**
key on the remote
–
CL8029
CL8029
CL8001
CL658
CL658
CL362
CL362
CL518
CL518
CL518
CL518
CL511
CL604
CL604
CL604
CL515
CL515
CL604
CL604
CL604
CL604