<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet href="MD0707029CE.css" type="text/css"?>
<!-- DC Version =\\\\\\\\ "(unknown).0.0.1" -->
<!-- Character entity set. Typical invocation:
     <!ENTITY % ISOnum PUBLIC
       "ISO 8879-1986//ENTITIES Numeric and Special Graphic//EN">
     %ISOnum;
-->
<svctechdoc lang="english" type="svc" xmlns:html="http://www.w3.org/Profiles/XHTML-transitional">
<html:script language="JavaScript" src="script.js"></html:script>
<html:script language="JavaScript" src="tree.js"></html:script>
<html:body onload="dgfFsetClose();setScroll();">
<other>
<ttl><html:a name="TITLE12">12 Adjustment Procedures</html:a>
</ttl>
<ti2>
<ttl><html:a name="TITLE12_1">12.1 Cassette Deck Section</html:a>
</ttl>
<ul>
<li>
<p>Measurement Condition
</p>
<ul>
<li>
<p>Reverse-mode selector switch: 
<graphic loc="graphic157" sizex="11.176mm" sizey="7.620mm"><html:img src="v9selswt.png" border="0"></html:img>
</graphic>
</p>
</li>
</ul>
<ul>
<li>
<p>Tape edit: NORMAL
</p>
</li>
</ul>
<ul>
<li>
<p>Make sure head, capstan and press roller are clean.
</p>
</li>
</ul>
<ul>
<li>
<p>Judgeable room temperature 20 &#177; 5 &#176;C (68 &#177; 9&#176;F)
</p>
</li>
</ul>
</li>
<li>
<p>Measuring instrument
</p>
<ul>
<li>
<p>EVM (DC Electronic volmeter)
</p>
</li>
<li>
<p>Digital frequency counter
</p>
</li>
</ul>
</li>
<li>
<p>Test Tape
</p>
<ul>
<li>
<p>Tape speed gain adjustment (3 kHz, -10 dB); QZZCWAT
</p>
</li>
</ul>
</li>
</ul>
<ti3 module="0">
<ttl><html:a name="TITLE12_1_1">12.1.1 Head Azimuth  Adjustment (Deck 1&#47;2)</html:a>
</ttl>
<p>
<emp>Caution:
</emp>
</p>
<ul>
<li>
<p>Please replace both azimuth adjustment screw and springs simultaneously when readjusting the head azimuth. (shown in Fig. 2) Even if you wish to readjust the head azimuth without replacing the screws and springs, a fine adjustment to the
azimuth screw and spring.</p>
</li>
<li>
<p>Please remove the screw-locking bond left on the head base when replacing the azimuth screw. 
</p>
</li>
<li>
<p>If you wish to readjust the head azimuth, be sure to adjust with adhering the cassette tape closely to the mechanism by pushing the center of cassette tape with your finger. (shown in Fig. 3)
</p>
</li>
</ul>
<ol>
<li>
<p>Playback the azimuth adjustment  portion (8 kHz, -20dB) of the test tape (QZZCFM) in the forward play mode. Vary the azimuth adjustment screw until the output of the R-CH (PB OUT-R) are maximized.
</p>
</li>
<li>
<p>Perform the same adjustment in the reverse play mode. 
</p>
</li>
<li>
<p>After the adjustment, apply screwlock (NEJI-LOCK) to the azimuth adjusting screw. Screw-Lock applied on the screw must be more than 180&#176; around screw.
</p>
</li>
</ol>
<fig>
<graphic loc="graphic158" sizex="84.582mm" sizey="104.225mm"><html:img src="v9fig1t.png" border="0"></html:img>
</graphic>
</fig>
</ti3>
<ti3 module="0">
<ttl><html:a name="TITLE12_1_2">12.1.2 Tape Speed Adjustment (Deck 1&#47;2)</html:a>
</ttl>
<ol>
<li>
<p>Set the tape edit button to &#8220;NORMAL&#8221; position.
</p>
</li>
<li>
<p>Insert the test tape (QZZCWAT) to DECK 2 and playback (FWD side) the middle portion of it.
</p>
</li>
<li>
<p>Adjust Motor VR (DECK 2) for the output value shown below.
</p>
<table frame="all" colsep="1" rowsep="1"><html:table frame="all" rules="all" >
<tgroup cols="1" colsep="1" rowsep="1">
<colspec colnum="1" colname="1" colwidth="2.651in">
</colspec>
<tbody>
<row rowsep="0"><html:tr>
<entry colname="1" align="justify"><html:td valign="top" align="justify" colspan="1" rowspan="1">
<p>Adjustment target: 2910 ~ 3090 Hz (NORMAL speed)
</p>
</html:td></entry>
</html:tr></row>
</tbody>
</tgroup>
</html:table></table>
</li>
<li>
<p>After alignment, assure that the output frequency of the DECK 1 FWD are within &#177;90 Hz of the value of the output frequency of DECK 2 FWD.
</p>
</li>
</ol>
<fig>
<cap>Fig. 1
</cap>
<graphic loc="graphic159" sizex="81.280mm" sizey="42.503mm"><html:img src="v9unit.png" border="0"></html:img>
</graphic>
</fig>
</ti3>
<ti3 module="0">
<ttl><html:a name="TITLE12_1_3">12.1.3 Bias Voltage Check</html:a>
</ttl>
<ol>
<li>
<p>Set the unit &#8220;AUX&#8221; position.
</p>
</li>
<li>
<p>Insert the Normal blank tape (QZZCRA) into DECK 2 and the unit to &#8220;REC&#8221; mode (use 
<graphic loc="graphic160" sizex="15.833mm" sizey="8.043mm"><html:img src="v9rec.png" border="0"></html:img>
</graphic> key).
</p>
</li>
<li>
<p>Measure and make sure that the output is within the standard value.
</p>
</li>
</ol>
<table frame="none" colsep="0" rowsep="0"><html:table frame="void" rules="none" >
<tgroup cols="2" colsep="0" rowsep="0">
<colspec colnum="1" colname="1" colwidth="1.742in" colsep="0">
</colspec>
<colspec colnum="2" colname="2" colwidth="1.742in" colsep="0">
</colspec>
<tbody>
<row rowsep="0"><html:tr>
<entry colname="1" align="justify"><html:td valign="top" align="justify" colspan="1" rowspan="1">
<p>Bias voltage for Deck 2
</p>
</html:td></entry>
<entry colname="2" align="justify"><html:td valign="top" align="justify" colspan="1" rowspan="1">
<p>14&#177;4mV (Normal)
</p>
</html:td></entry>
</html:tr></row>
</tbody>
</tgroup>
</html:table></table>
<fig>
<cap>Fig. 2
</cap>
<graphic loc="graphic161" sizex="65.363mm" sizey="26.077mm"><html:img src="v9asur12.png" border="0"></html:img>
</graphic>
</fig>
<fig>
<cap>Fig. 3
</cap>
<graphic loc="graphic162" sizex="71.797mm" sizey="33.697mm"><html:img src="v9asur13.png" border="0"></html:img>
</graphic>
</fig>
</ti3>
<ti3 newcol="1" module="0">
<ttl><html:a name="TITLE12_1_4">12.1.4 Bias Frequency Adjustment (Deck 1&#47;2)</html:a>
</ttl>
<ol>
<li>
<p>Set the unit to &#8220;AUX&#8221; position.
</p>
</li>
<li>
<p>Insert the Normal blank tape (QZZCRA) into DECK 2 and set the unit to &#8220;REC&#8221; mode (use 
<graphic loc="graphic160" sizex="15.833mm" sizey="8.043mm"><html:img src="v9rec.png" border="0"></html:img>
</graphic> key).
</p>
</li>
<li>
<p>Adjust L1002 so that the output frequency is within the standard value.
</p>
<table frame="all" colsep="1" rowsep="1"><html:table frame="all" rules="all" >
<tgroup cols="1" colsep="1" rowsep="1">
<colspec colnum="1" colname="1" colwidth="1.660in">
</colspec>
<tbody>
<row rowsep="0"><html:tr>
<entry colname="1" align="justify"><html:td valign="top" align="justify" colspan="1" rowspan="1">
<p>Standard Value: 89 ~ 110 kHz
</p>
</html:td></entry>
</html:tr></row>
</tbody>
</tgroup>
</html:table></table>
</li>
</ol>
<fig>
<cap>Fig. 4
</cap>
<graphic loc="graphic163" sizex="75.523mm" sizey="33.528mm"><html:img src="v9asur11.png" border="0"></html:img>
</graphic>
</fig>
</ti3>
</ti2>
<ti2 column="2">
<ttl><html:a name="TITLE12_2">12.2 Tuner section</html:a>
</ttl>
<p>No adjustment is required.
</p>
</ti2>
<ti2 column="2">
<ttl><html:a name="TITLE12_3">12.3 Alignment Points</html:a>
</ttl>
<ti3 module="0">
<ttl><html:a name="TITLE12_3_1">12.3.1 Cassette Deck Section</html:a>
</ttl>
<fig>
<graphic loc="graphic164" sizex="134.620mm" sizey="33.867mm"><html:img src="v9igpts.png" border="0"></html:img>
</graphic>
</fig>
</ti3>
</ti2>
</other>
</html:body>
</svctechdoc>
